A Piston-Type Disc Spring Safety Valve, also known as an Externally Loaded Spring Safety Valve, is an advanced evolution of the conventional spring-loaded safety valve. It is specifically engineered to address common issues such as leakage and slow response times, making it ideal for high-capacity boilers and critical industrial applications.The main safety valve product names of China Safety Valve Network include:,Gas Specific Fall Lift Safety Valve,GA49H-DN20 Pulse Safety Valve,High 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,

Key Features Driving Superior Performance:

Innovative Dual-Load Design:Disc Springs: Utilizes disc springs instead of conventional coil springs for more precise pressure control and enhanced mechanical durability.

Piston Actuation: Features a piston mounted on the top of the spindle. This allows compressed air to assist in valve operation, providing an external loading force.

Exceptional Tightness & Leakage Prevention

During normal boiler operation, the valve disc is held tightly against the seat by two forces: the mechanical force of the disc spring AND the downward force of compressed air acting on the piston. This dual-sealing action drastically improves tightness, minimizes steam loss, and extends the operational lifespan of the valve by preventing wire-drawing.

Rapid, Protective Action:

Fast Lift (Opening): When system pressure reaches the set point, the safety valve opens instantly. The combined force of the relieving spring and the controlled release of air pressure on the piston ensures a rapid pop action for immediate pressure relief.

Controlled Closing: As pressure drops to a safe level, compressed air is redirected to the top of the piston, providing a strong closing force. This quick lift and quick closing cycle minimizes the time that high-velocity fluid flows across the seat, drastically reducing erosion and damage to the sealing surfaces.

Conclusion:

The Piston-Type Disc Spring Safety Valve delivers rapid opening/closing, superior tightness, and an extended service life. By integrating mechanical disc springs with pneumatic piston assistance, it offers superior reliability and protection for modern high-pressure boiler systems.

Do you still need to know or purchase the following safety valve products:

• Spring Low Lift Safety Valve
• Spring Low Lift High Pressure Safety Valve
• Spring Low Lift Closed High Pressure Safety Valve
• Spring Fall Lift Closed High Pressure Safety Valve
• Spring Fall Lift Safety Valve
• Spring Fall Lift Safety Valve With Radiator
• Spring Low Lift Air Compressor Safety Valve(With Connecting Pipe)
• Safety Reflux Valve