D643H Pneumatic butterfly valve manufacturer, factory and supplier. D643H Pneumatic butterfly valve is composed of  three eccentric seal structure butterfly valve and double acting or single acting pneumatic actuator, the seat and butterfly plate have almost no wear and tighter sealing function. The seal ring is welded with stainless steel. It has the dual advantages of metal hard seal and elastic seal.

No matter at low temperature and high temperature, D643H Pneumatic butterfly valve has excellent sealing performance, the strength is high, the overflow area is large, the flow resistance is small, D643H Pneumatic butterfly valve has the function of two-way sealing, it is not restricted by the flow direction of the medium, and is not subject to the space position. It can be installed in any direction.
 

D643H Pneumatic butterfly valve Technical Specification
Normal Size Range: 2"-80"
Normal Pressure Rating: PN10~PN64, CLASS150~600
Material: WCB, CF8,CF8M,CF3,CF3M
Operation: Handwheel, Pneumatic, Electric
Temperature Range: -29°C~425°C
 

D643H Pneumatic butterfly valve Standards compliance
Design and Manufacture: GB/T12228, API609
Face to face(end to end): GB/T12221
Flanged connection: ANSI B16.5, GB/T 9113
Test and inspection: API 598, GB/T 13927