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HDH500A Type Triple Eccentric Butterfly Valve
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HDH500A Type Triple Eccentric Butterfly Valve

  
Categroy: High Performance Butterfly Valve 
Triple offset metal to metal butterfly valve is widely used in more severe applications(such as high temperature,medium with hard particles and shut off,etc.) Triple offset metal to metal butterfly valve can be bi-direction shuy off. Its oval sealing area on the disc only contacts the valve seat in the closed position, which greatly eliminates the friction between the disc and the seat, and increases the service life of the disc and the seat. When close the valve, the oval sealing ring on disc has uniform compression deformation contacting with the seat, so as to achieve a long-time reliable bi-direction zero leakage.
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HDH500A disc seal rings are composed of alternating layers of corossion-resistant alloy and composite graphite. Each individual piece provides an independent seal, even if one-piece damages, the remaining alloy ring and graphite ring can still ensure the tight sealing of the valve, moreover the laminated design of the seal ring also effectively reduces the valve operating torque, the seat is directly welded STELLITE alloy on the valve body.

Valve Cv Data

                    Valve open%

                     

                   Wafer                                            Double Flange                                     Lug

 

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