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 280.1/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	280.1/Each Drop Ship
Item 22488	3/8" RPV Series PVC Diaphragm Pressure Relief Valve 280.1/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	280.1/Each Drop Ship
Item 22489	1/2" RPV Series PVC Diaphragm Pressure Relief Valve 303.4/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	303.4/Each Drop Ship
Item 22490	3/4" RPV Series PVC Diaphragm Pressure Relief Valve 586.48/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	586.48/Each Drop Ship
Item 22491	1" RPV Series PVC Diaphragm Pressure Relief Valve 810.16/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	810.16/Each Drop Ship
Item 22492	1-1/2" RPV Series PVC Diaphragm Pressure Relief Valve 1546.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	1546.21/Each Drop Ship
Item 22493	2" RPV Series PVC Diaphragm Pressure Relief Valve 1749.8/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	1749.8/Each Drop Ship
Item 22494	1/4" RPV Series CPVC Diaphragm Pressure Relief Valve 398.38/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	398.38/Each Drop Ship
Item 22495	3/8" RPV Series CPVC Diaphragm Pressure Relief Valve 398.38/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	398.38/Each Drop Ship
Item 22496	1/2" RPV Series CPVC Diaphragm Pressure Relief Valve 655.01/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	655.01/Each Drop Ship
Item 22497	3/4" RPV Series CPVC Diaphragm Pressure Relief Valve 757.56/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	757.56/Each Drop Ship
Item 22498	1" RPV Series CPVC Diaphragm Pressure Relief Valve 989.32/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	989.32/Each Drop Ship
Item 22499	1-1/2" RPV Series CPVC Diaphragm Pressure Relief Valve 2334.69/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	2334.69/Each Drop Ship
Item 22500	2" RPV Series CPVC Diaphragm Pressure Relief Valve 2575.8/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	2575.8/Each Drop Ship