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Butterfly Valve, Ductile Iron Flange Type Electric Operation

Nov 15, 2017

Butterfly valve
This series of butterfly valves are suitable to be used for industrial pipeline as two-way open-closing and regulating devices
Scope of regulation is from 4 to 90°C fully open
If the valve is one-way used, the recommended pressure direction of closing is shown on fig when the disc is in closed position


1. Disk is truss framed with two-plate and flow-resistant is lower
2. Has reliable sealing structure for two-way stopping without any leakage
3. Axle sleeves are self-lubricated bearing, oiling is not need and friction drag is small during operation
4. Rubber sealing can be replaced on pipeline without removing the valve (DN>700)
5. Several kinds of actuators with reliable performance and agile operation are supplied for the laser’s selection
Wear-resisting and corrosion-resisting


Body: cast iron/ductile iron
Disc: ductile iron
Shaft: stainless steel
Body sealing ring: SS304
Disc sealing ring: EPDM
Operation: gear box 
Suitable medium: water, sea water
Main materials: grey cast iron, ductile cast, iron, alloy cast iron, carbon steel
Suitable temperature: ≤80oC
Nominal pressure: PN2.5-25bar
Nominal diameter: DN250-2800mm
Flange dimensions: BS4504 ISO2531, ISO7005 and other standards conforming to the requirements
Face to face length: BS5155, ISO5752, DIN3352, AWWAC504 and other standards conforming to the requirements