Performance
The allowable tolerance of the set pressure:≤±3% of the set pressure
Overpressure:≤10% of the set pressure
Blowdown:≤10% of the set pressure
Tightness: The valves have good seat tightness, conforms to API Std 527
Features
● The soft seat design provides good seat tightness before and after each relief cycle.
● The system can be operated nearer set pressure without valve leakage.
● No more overpressure required for full lift of main valve.
● Proper valve operation and lift are unaffected by back pressure.
● Adjustable blowdown.
● Non-flowing pilot reduces product loss and environmental pollution.
Quick simple verification of set pressure while valve remains in service.
