Replace the gas hose should note the following

(1)hose connection, turn off the Safety Valve, and then using a dedicated gas nozzle joints, then code with throat tightened.
(2) The hose length should be less than 2 meters. Hoses must not produce bend, stretch, foot and so on. Cracked, aging of the hose should not be used.
(3) The hose should not be installed at the following locations: a flame and radiant heat of the place, shelter. Hose, not across the windows, through the use of the house off the wall.
(4) Do not close the hose and the stove. For desktop stove, do not hose or across the disc below, should step aside bypass hose if the next, do not let the flames burn from a height to. Embedded stove, hose not close below the stove. Hoses should naturally droop under cooktop, maintain a distance of more than 10 cm in length should not be more than two meters, to avoid being blown fire burned.
(5) installed hose, soapy water to detect leaks. Open the gas valve switch to see if there is a continuous bubbling, and if so, it indicates that leakage and unsafe.

Total natural gas off only after cooking hobs bad valve does not close.

Total  natural gas valves off only after cooking hobs bad  does not close.
Because when the next total gas valves open when the switch is on the stove, there will be natural gas leak, very dangerous.
After each use of gas stoves, gas imports should turn off valve, then close the valve on the stove.
Suggest:
1, regular checks of gas appliances connected to gas pipeline and hose whether compressed, aging, the interface is loose, whether or rat chewed a sharp object, such as the occurrence of the above phenomenon should immediately contact the gas company.
2, regular replacement hose. According to the gas safety regulations and technical specifications, the hose should be replaced once every two years. Due to the quality of various different hose brand, for the user's own safety, it is recommended to replace the hose once a year, you should consciously do this.

Out, the day forgot to turn off the gas valve how to deal with

General household gas pipeline has three valves, one valve, the second is the conductance valve, the third is gas stove switch. No problem as long as the valve switch, pipes do not leak, theoretically any valve is closed, and will not leak. The reason plus three valves act on multiple insurance. Back to your question, the situation in your home is now only  

gas stove valves

switch is off, in theory, is not airtight. But to be safe, you'd better go home during the day, do not turn on the lights, do not smoke when you entered the room, where there are lights the fire point should be prohibited. After opening the door, the first not to go, stop the door for a while, breathing for a while, whether it can smell the stench? Are chest? Natural gas odorant added to the gas, it is smell, if there is taste, indicating that leak, leave the door way of handling a distance phone call the gas company, called its processing. After processing the doors and windows to ventilate the room are open, natural gas is not toxic, but more people gathered asphyxia anoxia damage.

Gas stove before the valve is generally in what position

Valve is best not to put the cupboard, the Gas Valves pipeline should not be placed in a relatively airtight appliance, reason is flammable and explosive gas valve leak is a very easy device on cabinet leaks do not know gathered to a certain extent it will encounter fire, explosion, a gas pipeline design and installation allowed, unauthorized changes to the individual's own problems not related to the gas supply sector.

Forgot to turn off the gas stove switch, but the gas valve off what are the consequences?

This should be from the gas stove valve in use to distinguish. When not in use under the gas stove in the situation is safe. Because the gas route is to go through the gas valve and then after stoves, if the valve is closed there is no gas stoves through. But if it is the case both eyes kitchen stove is in use and the other of which has a valve opens distinguished. If you are with a stove flame protection device with automatic protection devices because there is no shut-off valve on the side stoves gas leak does not occur. But do not have stoves flameout protection device eyes as with stoves will appear on the right side of the stove cooking, left the stove will always leak phenomenon. This is very dangerous. Even with stoves flameout protection device is not recommended without closing the two valves on the stove. Valves on the stove valves and piping must be closed with the end to ensure safety.

What are the characteristics of gas burners

1 )
High thermal efficiency: can adapt to pressure fluctuations, self-adjusting time with wind (ie the Gas Valves pressure, wind suction once more; small gas pressure, a little wind suction), combustion, high thermal efficiency;
2) Safety: The burner is equipped with a small fire. The boiler starts, the first point of a small fire, when a small fire to normal and stable combustion, automatic control system only open the main gas valve, fuel can enter the boiler normal combustion, deflagration phenomenon does not produce;
3) fuel adaptability: This kind of burner simply replace a few parts can be used in natural gas, liquefied petroleum gas, coal gas, liquefied petroleum gas and other types of mixed gas valve.

After the use of natural gas shut off valve gas stove is not right?

After each use of gas stoves, you should close the valve on the stove, you can not close the gas valve form, but you should always check the connecting hoses to whether there are air leaks between the stove. Identify problems in time. Suggest:
1, regular checks of gas appliances connected to gas pipeline and hose whether compressed, aging, the interface is loose, whether or rat chewed a sharp object, such as the occurrence of the above phenomenon should immediately contact the gas company.

2, regular replacement hose. According to the gas safety regulations and technical specifications, the hose should be replaced once every two years. Due to the quality of various different hose brand, for the user's own safety, it is recommended to replace the hose once a year, you should consciously do this. Hose replacement should note the following:
(1) hose connections, use a dedicated gas nozzle joints, then code with throat tightened.
(2) The hose length should be less than 2 meters. Hoses must not produce bend, stretch, foot and so on. Cracked, aging of the hose should not be used.
 (3) The hose should not be installed at the following locations: a flame and radiant heat of the place, shelter. Hose, not across the windows, through the use of the house off the wall.
 (4) Do not close the hose and the stove. For desktop stove, do not hose or across the disc below, should step aside bypass hose if the next, do not let the flames burn from a height to. Embedded stove, hose not close below the stove. Hoses should naturally droop under cooktop, maintain a distance of more than 10 cm in length should not be more than two meters, to avoid being blown fire burned.
(5) installed hose, soapy water to detect leaks. Open the gas switch, to see if there is a continuous bubble, and if so, it indicates leaks and unsafe.
3, the use of natural gas should be ignited after opening the gas. Not once lit, switch to quickly turn off gas stoves, should not be deflated after ignition. With automatic ignition stove, will promote the switch knob in direction, the direction of rotation indicated by the arrow, the ignition and adjust the flame size.
4, the use of natural gas stove valve. do not stay away from and observe in order to prevent the flames are boiling water overflow interest or blown off. And pay attention to the kitchen ventilation to keep indoor air fresh.
5, after use, pay attention to closed gas stove or water heater switch, while the valve is closed before the table, to ensure safety.
6, in the course of the gas supply in case of sudden interruption of natural gas switch should be closed to prevent air mixing within the conduit. Should resume gas supply in the air inside the tubes before use emissions.
7. Do not store flammable and explosive materials in the installation of gas pipelines and gas facilities in the room.
After 8, stoves and other gas facilities failure, do not disassemble, contact the gas company, the gas company sent specialized personnel for repair.
 9. Do not tied to the gas pipeline pets, rope, wire or hanging objects take, likely to cause loosening occurs at the interface gas pipeline under the action of gravity, causing a gas leak.
 10, installation of indoor gas pipeline facilities, and keep ventilation, maintain good air circulation. Do not rest or sleep during the installation of indoor gas pipeline facilities is prohibited to do the bedroom.
 11, before going to sleep at night, when you go out for a long time or a long time do not use gas, please check the stove valve is closed, and turn off the gas meter valve before the good.
  12. Do not change yourself or private access to the gas pipeline gas facilities, for changes please contact your local gas company, carried out by the gas company professionals contact change.
 13, often with soap and water, detergent behind or detergent and other tests indoor gas equipment connectors, switches, hoses and other parts, to see whether the leak, do not use open flame leak.
 14, stove burners perforations often with thin wire to clean, to prevent blockage of tempering.
15, education of children do not play with the valve or gas facility switch on the gas pipeline to avoid damaging the stove or forget to close the valve.
 16, qualified families can be equipped with a small fire extinguisher or a small amount of powder extinguishing agent, to prevent gas accidents.

Natural gas stove inhalation valve to the inside is how it all about?

gas stove valves should be flame protection problems,
First, try to change two batteries, battery power is low can cause suction and

Gas Control Valve

is not maintained, there will be what you said.
Second, adjusting the throttle, to make the middle of the fire burning fire tray flame protection to the needle for the job (that is, the middle of which a non-ignition of the needle)
Third, check the needle flame protection following cable is loose or fall off.

Valves on gas stoves how to adjust

1, the principle of the two intake valves is to control the air volume, helps regulate the fire burning.
2, if you turn off the Gas Cooker valves, there is no air enters the combustion, the flame will be extinguished or incomplete combustion waste gas source.
If the valve is adjusted to the maximum amount of wind caused by bad Assembly source of ignition and gas waste.
3. If a gas stove valves closed an open, because the stove has two hoops, closing and opening a supra a burning situation will arise.
4, adjusting the good will leak but there will be inadequate combustion waste gas source, adjust the flame when you use the color blue fire better.       

Use of gas stoves

1. When using a gas stove valves, to observe the combustion conditions, should not appear yellow flame, black smoke from the flame and phenomena, such as the above phenomenon, please adjust the damper plate inside the stove until a clear blue flame up.
2. When the ignition, you should press the ignition knob, a little pause and then rotate the spark ignition to ensure reliability.
3. Check valve on the pressure gauge on the air supply pressure is consistent with the rated pressure chassis parameters on the nameplate during use.
4. Open the gas supply, check the hose with soap and valves, gas appliance intake port direction, or whether tee interface a gas leak. (The body's internal air tightness has been strictly checked at the factory, if not the body disassembly maintenance, do not detect the air tightness) is strictly prohibited open flame leak! 5. After the leak qualified boot, visual combustion conditions, the air intake throttle adjustment For optimal position (flame clear, light blue color, powerful combustion); ignition ten times, check their firing rate; ignite each burner, put a The outer ring of the burner tune small fire, which blew out after Firelight, check that the knob gas passage is closed, and the other within the burner flame is at a set time (inductive plasma flame protection 8 seconds, thermoelectric flame protection 45 sec) Off.
6. After use, turn off the safety gas valve on the pipe or gas cylinders in order to ensure safety.

Safety valve working principle and structure

gas valve play a security role in the system. When the system pressure exceeds a predetermined value, the valve is opened, the system part of the gas into the atmosphere, so that the system pressure does not exceed the allowable value, in order to ensure the system is not due to excessive pressure and accidents. Also known as relief safety gas valve.
structure type

1, piston valve
Spool is a tablet. Air pressure acting on the piston A, when the pressure exceeds the safety value determined by the spring force, the piston A is the top open portion of the compressed air that is discharged into the atmosphere from the valve port; when the air pressure is lower than the safety value, the spring drive piston down, closes the valve port.
2, valve and diaphragm valve
It works with piston identical. These three are the safety valve spring provides control, adjustable spring preload, you can change the size of the security value, so called direct-acting valve.
3, pilot valve
In a small direct-acting valve to provide control pressure acting on the diaphragm, the diaphragm is the hard core spool, the pressure on the valve seat. When the air pressure is greater than A safe pressure, open the valve, the compressed air is discharged into the atmosphere from the left side of the outlet opening. Diaphragm safety valve and pilot safety valve pressure characteristics of a good, quick action; however, the maximum opening force is relatively small, that is, poor flow characteristics. Practical application, should be based on actual need to select the type of safety valve, and to choose their path according to the maximum displacement.

Features gas valve

1) at the bottom of the Bbq Gas Valves body with a slag hole, easy to exclude dirt. Body interior media path is straight through, without changing its flow direction when the medium flows through the valve, thus a smaller flow resistance. Medium can flow through the valve on both sides from any direction, can achieve the purpose of turning on or truncated.
2) Bbq Gas Valves are clear shot valve stem lift gate drive together, drive screw on the stem in the valve body outside, therefore, can visually determine the shutter opening and closing and the position according to the direction of movement and position of the valve stem, and transmission thread to facilitate lubrication and corrosion from the fluid, but it requires a large installation space.

Gas cooker valve applications

Gas Cooker valves applications
Stove after use should be shut off valve pipe line, because only then will fully burn gas, not only will bring a sense of security, but also save gas and reduce environmental pollution.
If the stove is to shut the door, go off the main valve, you will have that in the rest of the gas flow pipe left in the tube inside, so is unsafe, first turn off the main gas valve the fire will slowly become smaller until extinguished , then turn off the kitchen door, so there would be no circulation tube gas remaining inside.
In addition, you should always check the connecting hoses to whether there is an air leak between the stove. Identify problems in time:
1, regular checks of gas appliances connected to gas pipeline and hose whether compressed, aging, the interface is loose, whether or rat chewed a sharp object, such as the occurrence of the above phenomenon should immediately contact the gas company.
2, regular replacement hose. According to the gas safety regulations and technical specifications, the hose should be replaced once every two years. Due to the quality of various different hose brand, for the user's own safety, it is recommended to replace the hose once a year, you should consciously do this.

Introduce gas safety valve

Bbq Gas Valve spring and the rod two categories. Another impulse safety valve, Pilot Safety Valves, safety valve switch, safety release valve, safety valve and other static weight. Spring-loaded safety valve spring force and rely mainly on the work of the spring-loaded safety valve in closed and not closed, generally flammable, explosive or toxic media should use closed, steam or inert gas can be selected is not closed type, spring-loaded safety valve in there with a wrench and without wrenches. The main role is to examine the extent wrench flexible valve flap, and sometimes can also be used manually with emergency relief. Lever-type safety valve lever hammer mainly rely on force and work, but because of the huge volume of leveraged safety valve is often limited range of choice. Selection radiator valve with higher temperatures.
The main parameters of the gas safety valve displacement, this displacement depends on the caliber of the valve seat and valve opening height, by the opening of different height, it is divided into Weiqi the entire Kai two. Weiqi is the valve opening height for the seat throat diameter of 1/40 ~ l / 20. Entire Kai is the valve opening height for the seat throat diameter of 1/4.

valve

Pilot valve is to rely on the media discharged from the pilot valve to drive or control. The pilot valve itself is a direct-acting valve, sometimes with other types of gas valve Pilot safety valve for high pressure, large diameter occasions. The main valve pilot valve can also be designed to rely on the working medium to seal the form, or may be applied to much larger than the direct-acting valve mechanical load on the valve, which has a good sealing performance. At the same time, it moves less affected by back pressure. The disadvantage is that it is reliable Aluminum safety gas valve with a main valve and pilot valve related action as a direct-acting valve as quickly, reliably, and more complex structure.

Flameout protection device domestic gas safety

Common thermocouple type flame protection system on the market. This system is composed of two parts, a thermocouple and the magnet valve. Thermal electric potential difference when the thermocouple is heated, it enters the coil generates a magnetic field of the solenoid valve operation. Once the thermocouple detection of the flame is extinguished, the potential thermocouple produced quickly reduced to zero, the solenoid valve under the action of the spring off the gas valve. This system starts to warm-up for about 10 seconds, some customers feel inconvenient and habits. Its flame time control in about 40 seconds, there are still leak risks, but do not turn off the stove than securing device much safer.

Gas stove with a gas leak or smell causes

Gas stove with a gas leak or smell causes:
a, hose rupture or connected, replace the hose and fixed;
b, Gas cooker valve seal aging joints, replace the seals;
c, Gas burner valves prolonged failure, replace the valve;
d, stove unlit, troubleshooting, re-ignition;
e, from the fire or from the flame, remove from the fire (according to previous solutions);
f, joint leakage, repair or replace the joint.

Gas valve and air valve to achieve a reasonable linkage

Gas valve and air valve to achieve a reasonable linkage, that is, to ensure that the burner fuel ratio is equal to the design value. We need to find out the actual flow of gas cooker safety valve at different opening degrees to determine the required air flow rate by the gas flow rate and the actual design of air-fuel ratio value. Then based on the actual work flow characteristics of the air valve, determine the required air valve opening. Finally, the valve opening degree of the relationship between the corresponding linkage design. Ball is a large flow capacity, short trip switch, the noise is small. Therefore, commercial gas stove are used as a ball valve.

Commercial gas stove safety combustion system including

Commercial gas stove safety combustion system including: premix burners, gas valves, air valves, fans, piping, joint institutions. Wherein the opening of the gas valve linkage is the signal on the air valve opening degree control, mechanical transmission and electronic transmission in two ways. By establishing linkage between an accurate mathematical model of gas between the valve and the air valve, thus ensuring commercial gas stove premix fuel ratio accuracy.

Current commercial gas stove products

Current commercial gas stove products, there are many problems need to be solved and improved, these problems include: gas stove valve failure rate is high, low thermal efficiency. Commercial gas cooker product energy saving potential. It is estimated that, if the food and beverage industry are switching to energy-saving gas stove, only Beijing, annual savings of natural gas 5 000 × 104 m3, equivalent to the amount of natural gas using the city's commercial gas cooker month. Therefore, the use of new technologies gas burner valve to improve thermal efficiency and reduce carbon monoxide and nitrogen oxide emissions work is imminent.

Flameout protection device role

Gas Cooker valves flameout protection device role is: When the gas in the combustion process, the flame accidentally goes off automatically shut expire sources to ensure safe use. On some of the more high-end household domestic gas, generally used flameout protection device (embedded domestic gas must have a flame protection). gas cookers stoves in daily use, sometimes due to water, soup or overflow effluent and the flame extinguished. Unattended or without safety devices, the gas will continue to flow, a large gathering around the burner in case of fire easy to fire or explosion accident, endangering personal safety. If you have flameout protection device, once the flame is extinguished, it will feel the heat because the temperature of the element or the potential drop leaving the executive body quickly reset, shut off the gas to avoid gas leakage, so it plays a security role.

For domestic valve industry

For domestic valve industry, the mainland and there is a big gap between the coastal mainland from a low gas safety valves industry, small-scale, low degree of specialization, market-oriented is not high, which widened the gap with the coastal areas, but also led to the unbalanced domestic valve industry development.
In recent years, China's valve industry has entered a rapid development period, the valve industry, "threshold" gone has become Asia's largest valve machining center, one of the world's largest valve market. However, China's per capita consumption level gas cooker safety valve products in the world is not high, currently only $ 22 per capita. But with the rise of the power station valves, chemical valves, valves, valves and other building materials and food, we can see that the valve industry prospects, market attractive.

Gas Top Burner Valve are widely applied in modern agriculture

Our company production in various agricultural films, film, agricultural water-saving equipment, such as water range valves, Gas Top Burner Valve are widely applied in modern agriculture, rural applications are increasing pipeline valves, only to solve drinking water project with a valve pipe demand is considerable. Various needs of urban construction pipeline valves also greatly increased. Automotive industry uses valve manufacturing automotive components increased, the developed countries have an average power plant valves more than 10 billion, the average amount of power station valve of 7 billion, which stimulated the demand valve industry.

Gas burner valve is a device for supporting new gas pipeline project

Gas burner valve is a device for supporting new gas pipeline project. Used to cut, turned, adjusting the gas pipeline, with good control characteristics and closed sealing performance. For a variety of city gas medium pipeline gas, liquefied petroleum gas and gas, oxygen. Burner valve led to the unbalanced domestic valve industry development.

Self-closing gas valve self-test method

Self-closing gas valve self-test method: Under normal gas valve is closed gas top burner valve, this time self-closing valve closes automatically, the flame goes out; then open the valve before the table, lit the stove, if the stove is not lit, indicating that the self-closing valve closed good otherwise, self-closing valve may be a problem. If the family does not install self-closing valve or a self-closing valve can not work properly, the user can call gas valve supplier service professionals by the gas company to install or replace.

Gas stove valve is best not to put the cupboard

Gas stove valve is best not to put the cupboard, gas pipeline should not be placed in a relatively closed appliance, the reason is flammable and explosive gas valve leak is a very easy device on cabinet leaks do not know gathered to a certain extent will explode in a fire, a gas pipeline design and installation allowed, unauthorized changes to the individual's own problems not related to the supply department. The most important thing is to use the convenience of your own, in line with their habits on the line.

First off switch or to close the valve

Gas stove: First off switch or to close the stove valve?
Gas stove switch that switches on the gas stove safety, and now the general and ignition function together. Gas stove valve refers to a valve on the pipe connecting the stove, ventilation rotated 90 degrees, 90 degrees reverse turn off the gas.
So, turn off the heat when it should turn off the valve on a gas stove, because, if the first switch off the stove, may be mixed with air in the pipe connecting the stove again when the ignition could cause an explosion.

The basic operating principle is the stove

The basic operating principle is the stove?
It can be divided into the ignition phase, a mixed fuel, ignition phase, the combustion stage. Ignition phase: ignition pressure to open the gas stove valves, the gas freestanding stoves through the pipeline with some pressure coming from the nozzle; a co-firing: Since the kinetic energy of the gas ejector effect, the nozzle of the gas sucked from the primary air damper, in the ejector completed within a mixed gas ignited stages: the mixture flowing through the fire hole stove, hit the fire source ignition occurs, start ignition; combustion process: after ignition of gas obtained from the secondary air supply around the stove, complete complete combustion.

Turn off the main gas stove valves or not

After the close stove knob, you can not turn off the main gas stove valves?
You can not turn off the stove valves, the stove will not leak, which is built in to confirm the connection is no problem from the gas main valve to the hose connector between the stove (100% airtight, airtight), based on a It can do so. But taking into account the possible hose aging, loose connections and other security risks in use for many years, it is recommended to turn off the main gas valve safer. At the same time, we recommend that users do not have long to turn off the main valve or when taking a trip to prevent leakage.

The entire combustion process of gas burner

Gas burner ignition and stable combustion normal after a few seconds, servo motor drives the throttle opening of the state to the fire, while the proportional control gas burner valves motor cut, and in accordance with the air pressure and the back pressure chamber to control the gas after the gas valve Pressure to adjust the gas volume, stable, efficient combustion purposes. Thereafter, the gas safety burner valve automatically converted size of the fire and stop limit switches according to various demands. Furthermore, the entire combustion process, ionization electrode and the air pressure switch are monitoring the burner.

Home gas valve bad how to do

Home gas valve bad how to do?
If the former is not the case of the Gas cooking valve failure under, you can choose a better quality of the same type of valve, in the case of the gas meter valve before closing their own replacement. After replacing the valve before turning on the gas meter with soap or detergent behind the water evenly in the replacement gas burner safety valve on both sides of the interface, there is no leak bubbles, if bubbles must be turned off before the gas meter valve again, re-the need to replace the valve twice threaded fastening.
Gas valves are widely used for a variety of city gas pipeline network system media pipeline gas, liquefied petroleum gas, natural gas and oxygen; drive in the form of a manual, worm gear, electric, pneumatic, hydraulic, electro-hydraulic actuator linkage, can realize remote control and automation.

Gas valve has good control properties

Gas valve is a device for supporting the safety of new gas pipeline projects; use truncation is turned on, adjust the gas pipeline, has good control properties and close the sealing performance; suitable for city gas, liquefied petroleum gas, natural gas, oxygen gas pipeline and other media. Gas table top with a red material button, it is automatic emergency shutdown burner valves, if gas consumption exceeds a certain value, it assumes that leak automatically closed, open it is very simple, open and transparent plastic cover above the button, grab the red button Gently pull up just fine.

The basic operating principle cooker

The basic operating principle cooker
The basic operating principle can be divided into the ignition phase, a mixed fuel, ignition phase, the combustion stage. Ignition phase: ignition pressure to open the gas valve, the gas through the pipeline with some pressure coming from the nozzle; a co-firing: Since the kinetic energy of the gas ejector effect, the nozzle of the gas sucked from the primary air damper, in the ejector completed within a mixed gas ignited stages: the mixture flowing through the fire free standing gas stoves, hit the fire source ignition occurs, start ignition; combustion process: after ignition of gas obtained from the secondary air supply around the stove, complete complete combustion.

As a gas core parts - valves

Our company to a solid strength, advanced technology, professional manufacturing open market, "valve", as a gas core parts - gas Burner Valves, we produce a lot of gas valves become a manufacturer of choice. We are one of the manufacturers involved in the earlier gas valve assembly production, with all kinds of advanced automated production line and precise product inspection side of the instrument, the indicators are better than national standards.
In the "excellence, social services," business philosophy, to win with quality, professional known for the production of technical difficulties to break through the valve to open the market, "valve." The national response to the call of the western development strategy, with the relevant departments to promote rural Forest in Western China, the implementation of biogas projects. Developed a patented product has two ignition and protection of one gas stove valves and gas lamps ancillary products, and achieved gratifying results and economic benefits.

Don't forget the closed end gas valves

Don't forget the closed end gas valves
Attention to small details of life to develop good habits, to master the correct way to turn off the gas cookers after use should be shut off the gas valve on the pipeline or on the gas cylinders, and so on and then off the fire extinguishing gas stove switch, to ensure safety. In addition, before going to sleep, when they go out further checks whether the gas should have been closed. Recommends that users regularly check whether the hose aging, loose connections and other security risks, it is recommended to turn off the main gas valve safer, there are no long-term or taking a trip when you want to turn off the main valve to prevent leakage.

Dynamic stability of the safety valve

When the protected system pressure increases, resulting in an additional force elements acting on feelings, so that the element moves to open a gap in the valve passage, the medium is discharged through the gap.
Its part of the life of the discharge capacity of the safety valve, safety valve and dynamic stability in work on. Channel cross-sectional area and the discharge capacity of the Gas Heater Control Valve of the shock would reduce the safety valve, and the valve seat and the same opening height limit collision bits will damage the valve sealing surfaces and other parts. two acting safety valve most likely to produce valve shocks.
Dynamic safety valve instability is mainly caused by the following reasons: Pilot operated safety valve discharge capacity is more than a safety valve into the media flow, spring just had big, big back pressure valve and the outside world in the chamber when the valve is opened Dynamic interference.

Classification of the safety valve

Valve structure are two major categories: spring-loaded and leveraged. Spring means sealing valve and valve seat by spring force. Leveraged rely on leverage and weight forces. With the large capacity needs, harboring a pulse valve, also known as the patio heater control valve, the main valve and the auxiliary valve. When the pipeline medium pressure exceeds a predetermined pressure value, the auxiliary valve to open, the media along the catheter into the main gas stove safety valve and the main valve is opened to reduce the media pressure increased. Emissions safety valve depends on the caliber of the valve seat and valve opening height, it can be divided into two types: Weiqi opening height is the seat diameter (1/20) - (1/40), the entire Kai It is (1/3) - (1/4).
In addition, with different requirements, there are enclosed and non-enclosed. Enclosed discharge medium that is not compromised, the entire exhaust outlet along a predetermined, generally used for toxic and corrosive media. Enclosed is generally not used for toxic or corrosive media.

In the form of structural safety valve lever hammer

Simple lever hammer safety valve structure, adjust easily and more accurately, the applied load will not increase the valve flap and a larger increase for higher temperature of the occasion, it was more commonly used in the past, especially It is used in high temperature boiler and pressure vessel. But hammer lever Water Heater Gas Valves structure is relatively bulky, easy loading mechanism vibration, and often due to vibration leakage; lower its back seat pressure, not easy to close after opening and holding tight.

Safety valve selection principles are analyzed as follows:

1. steam boiler safety valve, generally used to open the entire Kai spring safety valve;
2. The liquid medium with a safety valve, generally used Weiqi safety valve spring;
3. The air or other gas media safety valve, generally used in the entire Kai spring safety valve closed;
4. LPG tankers or liquefied petroleum gas tanker railroad safety valve, generally used all Kai built-in Propane Control Valve;
5. outlet safety valve production wells, generally used in the pilot valve;
6. The high-pressure bypass valve steam generating equipment, generally used in a safe and controlled dual function of the pilot valve
7. If the requirements of the safety valve for regular open test should be used to enhance the wrench with a safety valve. When the pressure reaches more than 75% of the opening pressure of the medium can be used to enhance the wrench slightly lifted from the valve seat to check the safety valve opens flexibility;
8. If the medium temperature is higher, in order to reduce the temperature of the spring chamber, usually enclosed safety valve when the temperature exceeds 300 ℃ and open valve temperature than 350 ℃ and should be used in safety valve with radiator;
9. If the valve outlet back pressure is changing, the change amount exceeds 10% of the opening pressure should be used bellows safety valve;
10. If a corrosive medium should be used bellows safety valve, preventing the important parts due to media corrosion and failure.

Direct-acting valve working medium

Direct acting valve is opened under the direct action of the working medium, which rely on the role of the working medium pressure against the biasing mechanism is applied to the Gas Heater Control Valve flap mechanical load, the valve open. This safety valve has a simple structure, quick action, good reliability advantages. But because relying on the structure of load, the load size is limited and can not be used for high-pressure, large diameter occasions.

Safety valve should note the following:

(1) there is gas in the container when liquid two-phase material safety valve should be installed in the gas phase portion.
(2) Aluminum safety gas valve for venting flammable liquid outlet valve of the tank should be connected to the accident. When the discharge of the material is a high temperature fuel, its receiving container should have the appropriate protective equipment.
(3) general safety valve may be vented, the vent should be above the fire site operator 1 meter (m) or more and not toward 15 meters (m) or less, emitting sparks and high temperature equipment location. Indoor equipment, safety containers should lead roof vent and the roof above two meters (m) or more.
(4) When the inlet oven non safety valves has cut off valve, cut off valve should be in a normally open state, and to be seals, to avoid mistakes.

A brief introduction about the safety valve lever hammer

Hammer safety valve lever hammer and using leverage to balance the role of the force on the Gas Grill Control Valve. According to the principle of leverage it can use smaller mass weight by increasing the leverage effect of a larger force, and by moving the position of the weight (or mass conversion hammer) to adjust the safety valve opening pressure.
Simple lever hammer safety valve structure, adjust easily and more accurately, the applied load will not increase the valve flap and a larger increase for higher temperature of the occasion, it was more commonly used in the past, especially It is used in high temperature boiler and pressure vessel. But hammer lever thermostatic mixing valves structure is relatively bulky, easy loading mechanism vibration, and often due to vibration leakage; lower its back seat pressure, not easy to close after opening and holding tight.

Expanding valve industry market size

Valve industry market scale, this is an indisputable fact. Our production can have a number of qualified safety valve business is not much, because the safety valve is part of the special equipment industry, the State Administration of Quality Supervision review of the application of more stringent qualification, and great patio heater valve market demand, no doubt to those qualified safety valves business has brought more wealth opportunities.
Valve play a security role in the system. When the pressure exceeds a predetermined value, the gas stove safety valve is opened, the system portion of the gas / fluid into the atmosphere / pipe outside, so that the system pressure does not exceed the allowable value, in order to ensure the system is not due to excessive pressure and accidents.

Classification of gas cooker valve

Water Conservancy Gas Cooker valve has its own unique characteristics, and many types only welcomed by everyone, today gas cooker valve Manufacturing Co., tell you about the relevant knowledge about water conservation relief gas cooker valve, pressure relief gas cooker valve to introduce water conservation classification


     Water Conservancy gas cooker valve has its own unique characteristics, and many types only welcomed by everyone, today Botou gas cooker valve Manufacturing Co., tell you about the relevant knowledge about water conservation relief gas cooker valve, pressure relief gas cooker valve to introduce water conservation classification
Many different types of gas cookers freestanding, but can be roughly divided into direct-acting (Self) and indirect-acting (which force type) two categories. Direct acting gas cooker valve, which uses the energy of the medium itself to control the desired pressure, the indirect acting gas cooker valve, namely the use of outside force, such as pneumatic, hydraulic or electrical, etc. to control the desired pressure. Compared to these two, the former is relatively simple structure, high precision latter. At present, China's mass production and use are direct-acting gas cooker valve. According gas cooker valve structure can be divided into:
Piston gas cooker valve: it is to balance the pressure through the piston, driven gas cooker valve movement.
Film-type gas cooker valve: A film as sensitive components to drive the gas cooker valve motion free standing gas cooker valve.
Air bag pressure reducing gas cooker valve: relying on the media to enter the gas cooker valve gas pressure within the package to balance the pressure reducing gas cooker valve.

Double plate gas cooker valve

① wedge gate Gas Cooker valves sealing performance than good, such as when oblique angle and seat sealing surface with not very accurate, and still has a good seal;

② after gate sealing surface wear, the metal sphere at the bottom of the top center of the pad can be used to change a thicker, generally do not have welding and grinding sealing surface, this is a single gate, flexible gate difficult to achieve.

③ parts than other forms of multi-gate;

④ In addition to apply steam, oil and other media, but also applies to the site of frequent switching and wear on the sealing surface of the medium, not for easy coking medium.

(4) parallel gate gas cooker valve

① sealing gas cooker valve than other forms of difference;

② suitable for medium temperature and low pressure;

③ In addition to the gate with fixed panels on two easy to fall off the gate, where the lead wire is fixed with two shutter gate easy to fall off, using unreliable.

Processing and maintenance ④ gate and seat sealing surface of the gas cooker valve is simpler than other forms.

Several gate gas burner valve Introduction

(1) wedge single slide gate gas Burner Valve ① simple structure more flexible; ② at higher temperatures, the sealing performance as flexible gate gas burner valve or double plate gas burner valve is good; ③ easy to coke suitable for high-temperature media.


(1) wedge single gate gas burner valve

① structure is relatively simple elastic gas burner valve;

② At higher temperatures, the sealing performance as flexible gate gas burner valve or double plate Stove Top Burner Valve is good;

③ easy to coke suitable for high-temperature media.

(2) resilient gate Gas Cooker valve

It is a special form of wedge single slide. Compared with the wedge gate gas burner valve, at high temperatures, good sealing performance, and the gate is not easy to get stuck in the heat; for steam, hot oil, and the oil and gas and other media, and the site is suitable for frequent switching. Not for easy coking medium.

Use of gas top burner valves

Annular pipe-line gas top burner valves shall be arranged to ensure that the pipe network maintenance, there is a need for fire water. That single plant, the number of fire hydrants two gas top Burner Valves Treasury indoor fire pipe-line between not more than five. More layer, high-level workshop, warehouse and multi-civil indoor fire water line gas top burner valve arrangement, which should ensure a standpipe overhaul, the rest of the standpipe can still fire water supply.
     Fire water and other water merge indoor plumbing, when other water reaches the maximum mass flow, should ensure that fire water.
     Consider the case of fire, taking a bath in a panic fear and confusion state officers, some sprinklers are not closed on the left bathhouse, these sprinklers continued to spray, so the shower water consumption by 15%.
     When the municipal water supply pipe water supply capacity is large, the production and living by the water reaches the maximum hourly flow, and municipal water supply pipeline still building indoor and outdoor fire water, indoor fire is set inside a building with a pump inlet tube , straight direct connection.
     This gas Burner Valve can save the state investment, also had no effect on the fire with water. Otherwise, who has a house fire hydrant water supply system shall be set fire water.

Gas Burner Valve test equipment development direction

To work hard in the "excellent" word. Excellent, mainly refers to the quality of the brand, is famous. It's a very broad meaning, through the whole process of mechanical Range Top Burner Valve product technology, process technology and organizational techniques, throughout the various processes of mechanical Gas Burner Valve parts, processing equipment, machinery and products throughout the Gas Burner Valve assembly, commissioning until the installation user site commissioning and service work round, the whole process, all-weather. To really put the Gas Burner Valve mechanical products do "excellent."
Want to "strong" character areas to work on. From a variety of industries, yield analysis, China has formed a relatively complete variety and have a mechanical gas safety burner valve testing a number of producing countries. But in essence, the high-quality, advanced production technology and economic power can not be considered. To the existing basis, regardless of industry, business, whether it is a whole host of production or parts production; should the "strong" direction to work on.
To make a fuss "of" words. Information technology embodied in the product as mechatronics, reflecting modern, digital PLC control automation in the management. Progressive approach to information technology has become a reality. By implementing "and reflects the level of product technology and business management. To" "brains of words. Regardless achieve" gifted "," strong "," of ", we need people to go through implementation, to realize, no talent is not enough. talent is rejuvenating the country, enriching the base, the source of development, technological innovation, economic development, social development, explorers, practitioners of a well-off cause, talent, development of hydraulic Gas Burner Valve testing machinery industry also have rely on people. To train and retain qualified personnel, so that they have a chance to start, work platform, the development of space. the whole industry and businesses are feeling a lack of talent, could organize and implement a combination of research, so research and development, education institutions and production practices closely, so that targeted research and teaching, so that research and teaching projects through the production becomes productive. You can also open up human resources, including domestic and foreign human resources, the use of domestic human resources is essential.

Gas top burner valve testing equipment

China's Gas Top Burner Valve test equipment in the "inward-looking", either in quality or quantity are far less than the international level. This situation also doomed delay gas top burner valve device market can not be opened, the market share is low. China's gas top burner valve test equipment that will be how to be close to or reached the international level. The following, we want to pay attention. We summarize in two words "strong, technology, the best people."
China's gas top burner valve test equipment and test the international production of power compared to the gas top Burner Valves test bench is still pregnant with a huge potential for development. There are many foreign countries where we can learn from. Central put forward the scientific concept of development, the new road to industrialization, conservation-oriented society, we need to be reflected in our practical work.
Look, the international outstanding gas top burner valve testing machine, whether the annual output value or quality are much higher than domestic, which shows the two problems, one of China's Gas Cooker valve pressure test test test equipment is still in the "inward-looking", the second is a hydraulic gas top burner valve test bench is still a relatively broad market. However, how to enter the marketplace is worth serious consideration.

Sound and vibration phenomena of gas burner valve

Through a system of gas Burner Valves say anything stove Coupling FEM and analyze the results of the sound field, and finally can draw the following conclusions:

     a. Further demonstrates the hole jet of gas burner valve is one of the effective ways to reduce the noise from the simulation point of view.

     b. Only when the aperture diameter is about 4mm, the silencing effect of noise reduction is better. If the aperture gas burner valve is too small, the hole is easily clogged impurities in the gas, if the pore size is too large, the high frequency noise can not be filtered off, reach the silencing effect of noise reduction.

     c. The results show that the calculation process and, Gas Valve is a more practical finite element software, its user interface is good, before and after treatment powerful computing and high precision, is to solve the acoustic field distribution of effective processing of finite element software.

The analysis on gas top burner valve

With its increasing emphasis on the living environment, environmental protection departments began slowly attention and control hazards of noise, and the introduction of the standards and norms related to limit noise. Noise largest industrial enterprise environmental standards is permitted 90dB, the actual noise when opening and closing the Range Top Burner Valve ordinary stove produces up to 120dB, seriously polluted the surrounding environment. After solving the finite element model to calculate the success of post-processing, obtained as shown in Figure 14 SPL cloud, can be seen from this figure the maximum sound pressure level is 79.2dB. It can be seen from the use of this new type of gas top burner valve noise level analog simulation side has to meet the requirements of the relevant laws and regulations to control the noise range, can be extrapolated hole injection is an effective noise of Burner Valve reduction method, but must choose hole aperture and reasonable arrangement.

Gas cooker valve operational use

     Gas cooker valve before operating the gas cooker valve must be familiar with the technical parameters of equipment, technical knowledge to understand the principles, structures and other equipment. Before moving the gas cooker valve, make sure the pipes and Gas Cooker valves have been cleaned. Ensure flexible gas cooker valve easy to use, no run, run, drip, drain phenomenon. In the obtained production scheduling permission, perform the gas cooker valve opening and closing operation.

     Typically ball gas cooker valve hand wheel clockwise to open the gas cooker valve counter-clockwise to close the gas cooker valve hand wheel (ie, cis-open reverse off). Operation of the gas cooker valve actuator input signal according to the size of the drive stem rotation is completed: the forward 1/4 turn (90 °), the gas cooker valve is turned off. Counter-rotating 1/4 turn (90 °), the gas cooker valve opens. When the actuator direction arrow parallel with the pipeline, the gas cooker valve is open. Vertical arrow indicating the pipeline, the gas cookers for sale is closed. Not use brute force when operating gas cooker valve switch, hard to open hard off, in order to avoid damage to the gas cooker valve actuator. Ball can be used as the transmission medium truncated pipeline, can not be used as a throttle gas cooking valves.

The advantages of gas top burner valve

Ball in the pipeline is mainly used for cutting, distribution and change the direction of flow of the medium. Ball is a new gas top burner valve has been widely used in recent years, Water Heater Gas Valves has the following advantages: small fluid resistance, the resistance coefficient equal to the same length of the barrel; simple structure, small size, light weight; compact and reliable gas top burner valve sealing surface material widely used plastic, sealing, and has also been widely used in the vacuum system; easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation of 90 °, to facilitate remote control; easy maintenance, simple ball gas Burner Valves, seals are generally activities, the removal replacement is more convenient; in the fully open or fully closed, the sealing surface and the dielectric isolation ball and seat, through the media, Gas Top Burner Valve will not cause erosion of the gas top burner valve sealing surface; wide range of applications, path small to a few millimeters to a few meters from high vacuum to high pressure can be applied.

     Ball has been widely used in various sectors of petroleum, chemical, power generation, paper, nuclear, aviation, rockets, as well as people's daily lives. Application of gas pipelines in particularly prominent, mainly used in process pipe lines and long-distance gas transmission pipelines in the process station.

Basics of a gas top burner valve

Ball is evolved from the stopcock, the difference is cock body is a sphere, round holes or channels through its axis. When the gas safety burner valve is rotated 90 °, in the import and export of office should be fully rendered sphere, thus cutting off the flow. Just use the rotary gas burner valve operation and a small rotational torque of 90 ° can be closed tightly. The body cavity of full equality for the media provided little resistance, through the flow channel. Generally considered the most suitable gas burner valve opening and closing done directly used, but in recent years, development has been designed to give it a throttle gas burner valve and flow control purposes. The main features of gas burner valve is its own compact, easy operation and maintenance for water, solvents, acids, and natural gas work in general media, but also for the poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Ball gas Burner Valve can be integral, or may be modular.

     Principle ball. Ball works by rotating the gas burner valve to the gas burner valve flow or occlusion. gas burner Safety Valve Burner Valve switch light, small size, can be made into large-caliber, reliable sealing, simple structure, easy maintenance, and spherical sealing surface often in the closed state, the media can not easily be eroded, in various sectors has been widely used.

Matters needing attention when adjusting gas cooker valve

In the installation of control gas cooker valve before, the need for careful analysis, detailed on the control gas cooker valve in the pipeline, after completely clean, can be installed, in the installation process, the need to maintain the vertical or vertical state, at the same time, also needs to set a good support in regulating Gas Cooker valves before and after the position, ensure the security and stability control gas cooker valve work. In addition, in the installation process, still need to analyze the flow problem, in order to guarantee the quality of installation, should be in the stress under the condition of small installation, if the installation environment is bad, we must do a good job of dustproof measures associated with waterproof measures, at the same time, but also to protect the inlet position of straight length comply with the standard requirements, if the installation needs of small caliber the gas cooker valve, requires strict compliance with the design standards, in general, the outlet position of straight pipe section requires 3 to 5 times larger than the gas cookers freestanding valve diameter. At installation time, enough space to set aside, in order to facilitate maintenance and the subsequent operation, and good control of the pipe diameter, in the selection of pipe connection, should be a comprehensive analysis to all kinds of influencing factors.
For conclusion,

To make a long story short, the regulating gas cooker valve is a very important part of circuit chemical automation control, selection, installation and maintenance work of regulating gas cooker valve will affect the chemical system operation, therefore, the staff must strictly follow the installation system, a comprehensive analysis of various factors to the choice of control gas cooker valve. Under the development level of science and technology, chemical industry automatic control for regulating gas cooking valve also put forward higher requirements, which requires an in-depth study on the regulating gas cooker valve, and constantly improve the reliability and stability of the regulating gas cooker valve used.

Gas burner valve flow characteristics analysis

     Both state control gas burner valve flow characteristics including work flow and ideal flow at the inlet and outlet pressure has been the state, through the mediation flow gas burner Bbq Gas Valve is ideal traffic flow has this ideal line, parabola, quick opening, the percentage of features .

     In terms of quality adjustment, automatic control process is mainly dependent on the chemical characteristics of the principle of compensation for production production systems for the control gas burner valve characteristics are stringent regulations, based on this factor, when choices must be analyzed in detail magnification factor regulating gas burner Gas Valve prevent the adjustment coefficient change.

     In the flow characteristics, the control gas burner valve in the course of the traffic changes occur, which can easily lead to concussion problems in the implementation of large opening operation, the control gas burner valve will be slow state, it is prone to regulate and adjust the untimely dead situation, taking into account this factor, linear flow control gas Burner Valve is not suitable for large systems change.

Classification of gas cooker valve

Water Conservancy gas cooker valve has its own unique characteristics, and many types only welcomed by everyone, today gas cooker valve Manufacturing Co., tell you about the relevant knowledge about water conservation relief gas cooker valve, pressure relief gas cooker valve to introduce water conservation classification


     Water Conservancy gas cooker valve has its own unique characteristics, and many types only welcomed by everyone, today Botou gas cooker valve Manufacturing Co., tell you about the relevant knowledge about water conservation relief gas cooker valve, pressure relief gas cooker valve to introduce water conservation classification
Many different types of gas cooker valve, but can be roughly divided into direct-acting (Self) and indirect-acting (which force type) two categories. Direct acting gas cooker valve, which uses the energy of the medium itself to control the desired pressure, the indirect acting gas cooker valve, namely the use of outside force, such as pneumatic, hydraulic or electrical, etc. to control the desired pressure. Compared to these two, the former is relatively simple structure, high precision latter. At present, China's mass production and use are direct-acting gas cooker valve. According gas cooker valve structure can be divided into:
Piston gas cooker valve: it is to balance the pressure through the piston, driven gas cooker valve movement.
Film-type gas cooker valve: A film as sensitive components to drive the gas cooker valve motion gas cooker valve.
Air bag pressure reducing gas cooker valve: relying on the media to enter the gas cooker valve gas pressure within the package to balance the pressure reducing gas cooker valve.

Classification of water conservancy gas cooker valve

Water Conservancy gas cooker valve has its own unique characteristics, and many types only welcomed by everyone, today Botou gas cooker valve Manufacturing Co., tell you about the relevant knowledge about water conservation relief gas cooker valve, pressure relief gas cooker valve to introduce water conservation classification


     Water Conservancy gas cooker valve has its own unique characteristics, and many types only welcomed by everyone, today Botou gas cooker valve Manufacturing Co., tell you about the relevant knowledge about water conservation relief gas cooker valve, pressure relief gas cooker valve to introduce water conservation classification
Many different types of gas cooker valve, but can be roughly divided into direct-acting (Self) and indirect-acting (which force type) two categories. Direct acting gas cooker valve, which uses the energy of the medium itself to control the desired pressure, the indirect acting gas cooker valve, namely the use of outside force, such as pneumatic, hydraulic or electrical, etc. to control the desired pressure. Compared to these two, the former is relatively simple structure, high precision latter. At present, China's mass production and use are direct-acting gas cooker valve. According gas cooker valve structure can be divided into:
Piston gas cooker valve: it is to balance the pressure through the piston, driven gas cooker valve movement.
Film-type gas cooker valve: A film as sensitive components to drive the gas cooker valve motion gas cooker valve.
Air bag pressure reducing gas cooker valve: relying on the media to enter the gas cooker valve gas pressure within the package to balance the pressure reducing gas cooker valve.

Gas Top Burner Valve works analysis

Gas Top Burner Valve to control the power source is compressed, actuators for the cylinder, able to use electric solenoid Gas Top Burner Valves, switches, positioners, Gas Top Burner Valve and other components to secure his position to realize the role of the Gas Top Burner Valve drive, you can also achieve a ratio of switching regulator , then the use of various types of control signals to complete the pipeline medium temperature, pressure, flow and other parameters set. Pneumatic control patio heater gas valve has a quick response, simple control, intrinsic safety features, do not need another set explosion-proof equipment. In the chamber there is a certain pressure signal, the film will be thrust, pulling the thrust plate, stem, putting, compression spring, move the spool after spool off the seat, compressed air will circulate in signal pressure to a certain fixed value, the Gas Top Burner Valve will be maintained on the appropriate opening.

     Pneumatic control gas cookers freestanding Valve using a high reliability, simple structure, in the process of running and will not appear spark, so its a very extensive range of applications, but also can be used in explosion-proof oil demand station.

Gas cooker valve material selection

     Regulate the use of gas cooker valves for corrosion resistance, pressure and temperature have a rating almost demanding, therefore, the current multi-use cast iron gas cooker valve, which can effectively improve the corrosion resistance regulating gas cooker valve with compressive strength; in the regulation the internal components of the Gas Cooker valves material, more use of stainless steel, if the system requirements for the amount of leakage is small, you can choose a soft seal, if the system requirements for the amount of leakage is high, you need to use Hastelloy.

     In the selection of gas cooker safety valve, the need to consider the liquid concentration, temperature and pressure, combined with mechanical shock selection.

The structure and selection of gas burner valve

     Depending on its stroke, pneumatic control gas burner valve can be divided into two different types, namely, the angle straight trip itinerary, according to the structure points, pneumatic control gas burner valve can be divided into the butterfly, angle gas brass safety valve, sleeve gas burner valves, ball gas burner valves, diaphragm gas burner valves, Globe gas burner valves and other types.

     Which, through single-seat control gas burner valve is the process of using the minimum amount of gas burner valve leakage, flow performance ideal, simple structure, can be used to leak demanding area, but its passage is relatively complex, which to some extent limit the scope of its use.

     Through engine gas burner valve is through single-seat control gas burner valve opposite a gas Burner Valves, there is no strict requirements for leakage, suitable for use in large-area working pressure at present, through engine regulation is our most extensive range of applications a control gas burner valve.

     Sleeve gas burner valve can be divided into two types, namely double sealed sleeve gas burner valve with single seal sleeve gas burner valve, the gas burner valve sleeve has a good stability, low noise, easy accessibility, but its price is relatively high, and higher Range Top Burner Valve maintenance requirements Therefore, using the range are also some limitations.

     Diaphragm flow path is simple, its production and use is also high corrosion resistance PT-FE and PFA, it is suitable for application in alkali or acid environment, but relatively poor regulation.