Double Eccentric Soft Seal Butterfly Valve
Worm gear double eccentric soft seal butterfly valve is widely used in water supply and hydraulic pipelines. It features low torque, bidirectional sealing and bubble tight shut-off.
Manufacturing Range
Size: DN400～DN3000
Pressure: PN6 / PN10 / PN16
Body: QT450 ductile iron / WCB cast steel
Seal: EPDM / NBR soft rubber seal
Operation: Worm gear
End connection: Flanged
Temp range: ≤80℃
Design Features
Double eccentric structure, disc separates from seat quickly when opening, reduce friction
Spherical disc matches rubber seat, good sealing performance, bidirectional tight shut-off
Low operating torque, easy operation for large size
Smooth flow passage, small flow resistance
Suitable for water supply, drainage, water conservancy pump station
Design Standards
Design & Manufacture: GB/T 12238
Pressure Test: GB/T 13927
Flange: GB/T9113 / ASME B16.5