Double Flange Type Butterfly Valve

Double flange type butterfly valve
Butterfly valve plays a very important role in many places such as food, beverage,pharmaceutical purity piping and industrial environment,water treatment ,high building ,water supply and drainage system, it’s a device which open ,shut and regulate the flow of media .
Specifications
Flange butterfly valve,stainless steel butterfly valve
The largest diameter is up to DN2000mm,
It is used in low tempreture
Specification:
Flange butterfly valve main technical parameter:

Nominal diameter(mm) 50-2000mm
Nominal pressure(Mpa) 0.6 1.0 1.6
Seal test(Mpa) 0.66 1.1 1.76
Strength test(Mpa) 0.9 1.5 2.4
Suitable temperature Carbon steel: -29-425,stainless steel:-40-650
Suitable medium Water ,air,nutural gas,oil
Rate of leakage Correspond to GB/T13927-92
Type of drive Worm drive,motor-driven,pneumatic,hydraulic


Main parts material:
Name of parts Material
Valve body WCB,alloy steel,stainless steel,QT4500
Disc WCB,alloy steel,stainless steel.QT4500
Valve shaft 2Cr13 stainless steel,alloy steel
Seal ring Stainless steel
Packing Flexible graphite