Plastic Pressure Relief Valves From Hayward Industrial Products
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1/2" to 2", PVC and Corzan® CPVC
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 Reliable
Pressure Relief: Hayward Pressure Relief Valves protect
piping system components from damage due to over pressurization.
The valves work by sensing system pressure. When the system
pressure exceeds the set pressure, the force of the excess
pressure moves the valve piston off its seat to relieve the
excess pressure and diverts some of the flow out the discharge
port.Easy to Set Pressure: Hayward Pressure Relief Valves can be set by hand, no tools are needed, to relieve pressures from 5 to 75 psi. Each size of relief valve is designed to cover this complete pressure range with just one, non-wetted, plastic coated spring. There is no need to change springs for different pressure ranges as with ordinary relief valves. Molded Gauge Port: An integrally molded 1/4" NPT gauge port on the valve body makes installation of a gauge to monitor the relief pressure easy. No drilling or extra fittings are needed. No Corrosion Failure: These all plastic relief valves have no metal parts and will never fail, jam or stick because of rusted or corroded components. They require no painting or epoxy coatings to survive corrosive environments.
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