Piston Disc Spring Safety Valve Technical Guide
Key Features & Performance Advantages
Piston disc spring safety valves replace conventional coil springs with disc spring stacks, delivering superior pressure stability. The integrated pneumatic piston actuator enables dual-control functionality. During normal operation, combined spring force and upper piston air pressure ensure bubble-tight sealing. During overpressure events, rapid air switching to the lower chamber achieves millisecond-opening response, minimizing seat erosion.The main safety valve product names of China Safety Valve Network include:h Temperature and Pressure Fall Lift Safety Valve,Hydraulic Safety Valve,Impulse Safety Valve,Impulse Spring Safety Valve,JIS Safety Valve,Main Safety Valve,Overflow ValveOil Refining Specific Safety Valve,Pulse Safety Valve,Pilot Safety Valve,Pressure Safety Valve,Quick Switching Safety Valve,Spring Low Lift Safety Valve
Technical Specifications
Pressure range: 0.1-30 MPa. Temperature rating: -196°C to 600°C. Set pressure accuracy: ±1%. Blowdown: ≥95% of set pressure. Leakage rates meet API 527 Class IV standards. Disc spring fatigue life exceeds conventional springs by 300-500%, with maintenance intervals extending beyond 3 years.
Applications & Compliance
Ideal for supercritical power boilers, petrochemical reactors, and critical process systems. Complies with ASME Section I/VIII design codes, API 527 seat tightness testing, ASME Section IX welding procedures, and ASNT SNT-TC-1A personnel certification requirements for quality assurance.
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