Your #1 Pressure Relief Valve Manufacturer in China
- A pressure relief valve is a safety device used to automatically open and discharge media when the system pressure exceeds the setting to prevent equipment overpressure damage.
- Pressure relief valve responds to pressure changes through a spring or lever mechanism, and automatically closes when the pressure returns to normal, ensuring continuous and safe operation of the system.
- Widely used in industrial equipment such as boilers, pressure vessels, and pipelines, the pressure relief valve is an important component to ensure the stability and safety of key facilities.
Application of Pressure Relief Valve
- Petrochemical industry
- Electric power industry
- Chemical production
- Electronics and Precision Manufacturing
- Food and pharmaceutical
- Water and fire system
- Gas and urban pipe network
- Environmental protection and sewage treatment
Specifications of Pressure Relief Valve
Nominal diameter: DN50 – DN300
Nominal pressure: PN10, PN16
Working tempreture: -20℃ – 120℃
Flange connection: DIN2501,ANSI B 16.5,ANSI B 16.47,GB9113-2000,GB17241.6-1998
Features of Pressure Relief Valve
Pressure regulation performance
Stable output pressure:
Sensing pressure changes through the spring or diaphragm, automatically adjust the valve opening, maintain the stability of the outlet pressure, not affected by the fluctuation of the inlet pressure.
Wide pressure regulating range:
The pressure regulating range is determined by the spring stiffness, and the output pressure is adjustable with high precision. For example, the water pressure reducing valve supports the outlet pressure adjustment of 1~ 5.5bar.
- Material Sheet
| ITEM | PART NAME | MATERIAL |
| 1 | BODY | DUCTILE IRON |
| 2 | COVER | DUCTILE IRON |
| 3 | DISC | BRASS |
| 4 | SEAT | BRASS |
| 5 | SPRING | STAINLESS STEEL |
| 6 | STEM | STAINLESS STEEL |
| 7 | NEEDLE VALVE | BRASS |
| 8 | BALL VALVE | BRASS |
| 9 | PILOT VALVE | BRASS |
Safety protection, protect downstream equipment.
It is usually installed at the outlet of the device or at the pressure distribution node.
Step by step open the valve to fully open, avoid sudden pressure increase , observe the pressure gauge and gradually increase the pressure to the target value.