Double Flange Double Eccentric Worm Gear Butterfly Valve
A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.
End Connection: RF, Wafer, Lug, etc
Nominal diameter: 2" - 60"（DN50 - DN1500）
Pressure range: Class 150 - 900（PN16 - PN100）
Working temperature: -196℃ - +550℃
Body material: Cast Steel, Stainless Steel, Ductile Iron, Carbon Steel, etc
Operation : Handle, Gear, Electric actuator, etc
Media: Water, Salt, Acid, Natural gas, Air, Mellow, Oil, etc
Type Available: Flanged type
Inspection & Testing: API 598
Basic Design: ANSI/AWWA C504
Materials Standard: Others on request
Face to Face Dimension: BS5155 Short, ISO5752 (Series 13), DIN 3202F16
Flanged End Dimension: DIN PN10/16/25, ANSI B16.1, BS4504, ISO PN10/16, JIS B2212/2213
Equipped with a professional factory, Naibang Valve is a professional manufacturer and supplier of double flange double eccentric worm gear butterfly valve in China. If you want to buy quality product of various beautiful bags, you can get it at a cheap price from us.