Product Description:
Connection dimension of flange:
PN1.0MPa, PN1.6MPa to GB4216
PN2.5MPa to GB9113

Purpose:
For the flow control pipeline of water supply and drainage in mining industry and domestic water.
Suitable temperature: ≤ 80º C
Advantages:
Can exactly control the flow. The change of flow of upper reaches doesn't affect the enactment of the flow of lower reaches.
Pressure rating: PN (MPa) 1.0 1.6 2.5
Diaphragm type: DN20~450mm
Piston type: DN500~900mm

Tests:
Test JB/T9092, GB/T13927
Nominal pressure: PN(MPa)
Body: PN x1.5
Seal: PN x 1.1
Characteristic of the flow: (MPa)
<1.0 0.10
1.0-1.6 0.15
>1.6-2.3 0.20

Materials:
Body: Cast iron, ductile iron, carbon steel, stainless steel, bronze
Bonnet: Cast iron, ductile iron, carbon steel, stainless steel, bronze
Compression spring: Silicon manganese stee
Cylinder liner: Stainless steel
Diaphragm clamping: Ductile iron Plate
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  Plate