Hayward® RPV Series Diaphragm Pressure Relief Valves

The all-thermoplastic diaphragm pressure relief valve is for protecting against over-pressure in chemical feed systems. When the preset pressure is exceeded, the diaphragm is forced up, and the chemical flows out of the relief port, back to the chemical tank, or the suction side of the pump. All valves are preset at 50 psi; however, they are field adjustable via the adjustment screw. Installation should always be made as close to the pump as possible, without any valves or accessories between the relief valve and pump. Typical applications include chemical dosing, transfer, processing, and chlorination systems.

PVC or CPVC body
PTFE/EPDM diaphragm
304 stainless steel bolting
FNPT threads
Should be set approximately 15 psi higher than the system pressure
Adjustment screw with slot
Spring is rated for 10 to 150 psi & is preset to 50 psi
Maximum pressure: 250 psi @ 70°F (17.2 Bar @ 21°C)

Item #	Description	Catalog Pg.	Price
Item 22487	1/4" RPV Series PVC Diaphragm Pressure Relief Valve 285.7/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	285.7/Each Drop Ship
Item 22488	3/8" RPV Series PVC Diaphragm Pressure Relief Valve 285.7/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	285.7/Each Drop Ship
Item 22489	1/2" RPV Series PVC Diaphragm Pressure Relief Valve 309.47/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	309.47/Each Drop Ship
Item 22490	3/4" RPV Series PVC Diaphragm Pressure Relief Valve 598.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	598.21/Each Drop Ship
Item 22491	1" RPV Series PVC Diaphragm Pressure Relief Valve 826.37/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	826.37/Each Drop Ship
Item 22492	1-1/2" RPV Series PVC Diaphragm Pressure Relief Valve 1577.13/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	1577.13/Each Drop Ship
Item 22493	2" RPV Series PVC Diaphragm Pressure Relief Valve 1784.8/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	1784.8/Each Drop Ship
Item 22494	1/4" RPV Series CPVC Diaphragm Pressure Relief Valve 406.36/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	406.36/Each Drop Ship
Item 22495	3/8" RPV Series CPVC Diaphragm Pressure Relief Valve 406.36/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	406.36/Each Drop Ship
Item 22496	1/2" RPV Series CPVC Diaphragm Pressure Relief Valve 668.11/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	668.11/Each Drop Ship
Item 22497	3/4" RPV Series CPVC Diaphragm Pressure Relief Valve 772.72/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	772.72/Each Drop Ship
Item 22498	1" RPV Series CPVC Diaphragm Pressure Relief Valve 1009.11/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	1009.11/Each Drop Ship
Item 22499	1-1/2" RPV Series CPVC Diaphragm Pressure Relief Valve 2381.39/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	2381.39/Each Drop Ship
Item 22500	2" RPV Series CPVC Diaphragm Pressure Relief Valve 2627.32/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-505	2627.32/Each Drop Ship