Duo Plate Flange Wafer Butterfly Check Valves-Antiseptic Enviromental Protection
Green flange check valve has been newly developed by professional manufacturer with ISO9002 and helds such advantage of antiseptic and environmental protection.Green valves are now in predominantly and a combination of high technology and genious ideas. Wafer butterfly check valve is used for preventing the back-going of the medium in pipelines and equipments, and the pressures of medium will bring the result of opening and closing automatically. When the medium is back-going, valve disc will automatically close to avoid accidents. Having excellent antifriction & self-lubrication properties. The operating torque of this kind of valve is 40% lower than that of butterfly valve with pin.
Having superior wearability(time as waerability of copper) can prolong service life of valve obviously
NYLON has no toxicity, antibiosis and anti-mouid. so it can meet customer requirement of environment protection.
Saline-alkali proof weak acid resisting & appear inert to organic chemstry can be subsiture for great quantity of stainless steel valves
An advanced connecting disc with pin and coated NYLON technology made completely isolated between metal medium. So can raised the dependability and service easily of the valves
Much less in price than stainless steel valves can reduce the engineering costs
Flange connecting size complies nowdays standard of butterfly valves of U.S.A, England,Germany,U.K, Japan etc.
Features of wafer check valves:
Small in size, light in weight, compact in structure,easy in maintenance.
Tow torsion springs are used excerting on each of the pair valve plates, which close the plates quickly and automatically.
The quick-close action prevents the medium from flowing back and eliminates waterhammer effect
Safe and reliable in operation, hign interferance-resistance
It is easy to install on pipelines which is laid horizontaly or varticaly
This valve is tightly sealed, without leakage under the water pressure test
The connection dimensions of flange accord with the standards of GB/17241.6-1998 ISO,BS,DIN,ANSI
The face to face dimensions are in accordance with GB12221-89,ISO05752-82
Notes:
The stem of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeline.For vertical installation the direction of flow should be downward.
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Wafer Check Valve
 About Check Valve
Specification
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