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)

Stock	Description	Catalog Pg.	Price
Item 22487	1/4" RPV Series PVC Diaphragm Pressure Relief Valve 266.75/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	266.75/Each In Stock
Item 22488	3/8" RPV Series PVC Diaphragm Pressure Relief Valve 266.75/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	266.75/Each Drop Ship
Item 22489	1/2" RPV Series PVC Diaphragm Pressure Relief Valve 288.97/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	288.97/Each Drop Ship
Item 22490	3/4" RPV Series PVC Diaphragm Pressure Relief Valve 558.57/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	558.57/Each Drop Ship
Item 22491	1" RPV Series PVC Diaphragm Pressure Relief Valve 771.56/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	771.56/Each Drop Ship
Item 22492	1-1/2" RPV Series PVC Diaphragm Pressure Relief Valve 1472.59/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	1472.59/Each Drop Ship
Item 22493	2" RPV Series PVC Diaphragm Pressure Relief Valve 1666.5/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	1666.5/Each Drop Ship
Item 22494	1/4" RPV Series CPVC Diaphragm Pressure Relief Valve 379.39/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	379.39/Each Drop Ship
Item 22495	3/8" RPV Series CPVC Diaphragm Pressure Relief Valve 379.39/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	379.39/Each Drop Ship
Item 22496	1/2" RPV Series CPVC Diaphragm Pressure Relief Valve 623.84/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	623.84/Each Drop Ship
Item 22497	3/4" RPV Series CPVC Diaphragm Pressure Relief Valve 721.51/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	721.51/Each Drop Ship
Item 22498	1" RPV Series CPVC Diaphragm Pressure Relief Valve 942.21/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	942.21/Each Drop Ship
Item 22499	1-1/2" RPV Series CPVC Diaphragm Pressure Relief Valve 2223.51/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	2223.51/Each Drop Ship
Item 22500	2" RPV Series CPVC Diaphragm Pressure Relief Valve 2453.14/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	2453.14/Each Drop Ship