Pressure relief valve has two types, Piston type from DN20~DN500, diaphragm type from DN600~DN800. Pressure relief valve is composed by the main valve, needle valve, ball valve, pilot valve, piezometer , etc. Pressure relief valve is used to control the preset pressure of main valve.

      This valve is widely used in municipal domestic water systems, factories and mines.

Technical Specification/技術(shù)規(guī)格

- Size/規(guī)格：DN20-DN800
- Diaphragm type/隔膜式：DN20-DN500； 
- Piston type/活塞式：DN600-DN800
- End/連接法蘭：ISO PN6/10/16 
- Work Pressure/工作壓力：PN10/PN16 
- Work Temperature/工作溫度：0℃～80℃ 

Structure Character/結(jié)構(gòu)特點

- Full Bore Design, low fluid resistance and large flow. 
- Hydraulically balanced, when the hydraulic pressure in the pinline reaches set rate, the valve will open automatically and adjust the pressure under the set rate. 
- Easy to adjust set pressure and reset, Large operating range. 

Main Components and Materials/主要零件和材質(zhì)

Dimensions/尺寸