WRAS / API 609 / AWWA Wafer Butterfly Valves With Electric Actuator 1.0MPa / 1.6MPa

WRAS / API 609 ?/ AWWA ?Ductile Iron With Epoxy Coating Wafer Butterfly Valve?
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Specifications:
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Size:?DN50?-?3000?
Temperature:?-15℃?-?150℃?
Pressure:?1.0MPa/1.6MPa?
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Materials
Materials?of?Body : ?Ductile?Iron?(GGG40,?GGG50).?Cast?Iron?(GG25),?Stainless?Steel?

Materials?of?Disc : ?Stainless?Steel.?Nickel?Plated,?Ductile?Iron,?Ductile?Iron?Coated?Plastic,

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Titanium?Steel,?Copper?Alloy?etc

Materials?of?Seat : ?Ethylene-Propylene-Diene?Monomer?(EPDM),?Polytetrafluoroethylene?(PTFE),?

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Nitrile?Rubber?(NBR),?Chloroprene,?Chlorosulfonated?Polyethylene?(Hypalon),?

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Silicon,?Fluoroelastomer?(VITON) ,?Caoutchouc?etc.

Materials?of?Stem : ?Stainless?Steel.?Carbon?Steel?,2Cr13

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A?butterfly?valve?is?a?type?of?flow?control?device,?typically?used?to?regulate?a?fluid?flowing?through?a?section?of?pipe.?
The?valve?is?similar?in?operation?to?a?ball?valve.?A?flat?circular?plate?is?positioned?in?the?center?of?the?pipe.?
The?plate?has?a?rod?through?it?connected?to?an?actuator?on?the?outside?of?the?valve.?Rotating?the?actuator?turns?the?
plate?either?parallel?or?perpendicular?to?the?flow.?Unlike?a?ball?valve,?the?plate?is?always?present?within?the?flow,?
therefore?a?pressure?drop?is?always?induced?in?the?flow?regardless?of?valve?position.

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Wafer?Rubber?Seated?Butterfly?Valves