Product Explain ：
1)Production Enforce Standard
Flanged Dimension: PN1.0-PN1.6Mpa to GB4216, PN2.5Mpa to GB9113
Inspect and Test: JB/T9092, GB/T13927
Diaphragm Type: DN20~450mm
Piston Type: DN500~900mm
Pressure rating:PN1.0MPa PN1.6MPa PN2.5MPa
Suitable Temperature: ≤ 80 C
2)Materials:
Body/ Bonnet:Cast iron, Ductile Iron, Carbon Steel, Stainless Steel, Bronze
Compression Spring:Silicon Manganese Stee
Cylinder liner:Stainless Steel
Diaphragm clamping:Ductile Iron
Piston:Ductile Iron, Bronze
Diaphragm:NBR Rubber
O-ring:NBR Rubber
Stem:Stainless Steel
Disc:Ductile Iron, Bronze
Gasket :NBR Rubber
Gasket Clamping:Ductile Iron,Bronze
3)Purpose:
For reliefing the pressure of the production systems of the mining enterprises and the fire systems of the high buildings in order to prevent the system failure caused by the too high hydraulic pressure.Can keep the water s upply upper pressure of the main valve in a preset pressure to ensure the pressure of upper water supply zone of the main valve.
4)Advantages:
There isn't water hammer. The sensitivity is high. Reasonably be controlled by the hydraulic pressure Can use for a long time.
Main External and Connection Dimension Unit:mm