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:
Be used for water supply and backwater of the air conditioning system to ensure the pressure difference and improve the availability of the system.
4)Advantages:
Can keep the constant pressure difference and reduce the noise of the system and damage of the equipment for too large pressure difference.