HDH500A Type Triple Eccentric Butterfly Valve
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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