Dear Professional Colleagues,

I am faced with a situation where our anti-surge valves on our compressors are always tripping due to some of the probles below,
1. Slow response of the valves,
2. Fail positioners,
3. Leaking actuators
4. failed remote potentiometers, etc.
Most times, tuning of the anti-surge valves takes days
Can anyone in the industry working with anti-surge valves for large compressors share the strategy used to maintain a reliable anti-surge system that is not prone to tripping the compressors often? Thanks.

 

Fast-acting control valves are critical. Industry preference is for high-performance globe valves or butterfly valves with low dead time and hysteresis. Use smart positioners (e.g., Fisher DVC6200, Siemens SIPART, ABB TZIDC) with diagnostics. Avoid valves with long stroke travel or large actuator volumes unless you have boosters and fast response mechanisms in place.