Summary:
Yes.they have one direction oriented manufacture that fit to the usage.These valves are operated with an extended rod/l...
Yes.they have one direction oriented manufacture that fit to the usage.These valves are operated with an extended rod/liver which is rotating The valve shutters inside it is rotating to 180* and allow the flow by both sides.
CPVC Worm Gear Butterfly ValveThere are valves made to allow the flow both sides. In under ground water supply humepipe lines one way flow valves are used .While purchasing and installing read the instruction mentioned in the packets.
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