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.