Wafer Style Butterfly Valve with UL, FM
By coating the disc with EPDM rubber (elastic body), the restitutive power of this wafer style butterfly valve (HPBO-W1) between the valve’s body and rubber helps to maintain air tightness. A disc rotates 90 degrees to control the fluid in motion, maintaining high responsiveness under operations with low friction loss and low torque.
Fast operation is possible thanks to simplified opening/closing processes. This valve is applicable to control of low/high-pressure water. It is mostly used for firefighting pipelines and industrial water lines.
It is designed for use in fire protection systems where a visual indication is required as to whether the valve is open or closed. They are used, for example, as system, sectional and pump water control valves, and are suitable for installation between ANSI Class 125/150 flanges as well as PN10/16 flanges without the need for flange gaskets. The supervisory switches transfer their electrical contacts when there is movement from the normally open or normally closed disc position during the first two turns of the handwheel.
The Fire protection valves of Sam Chang Foundry Company obtained UL and FM certifications back in 1987, for the first time in Asia. Since then, additionally the company has acquired a range of certifications such as ULC, CE, VDS, GOST, EAC, and CCCF.
The company is building a systematically vertical production system from casting, to machining, assembling to inspection for butterfly valves and check valves etc. It is exporting to 20 plus countries around the world under long-term supply contracts with multinational corporations.
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