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.