Hayward® PBV Series Diaphragm Back Pressure Valves

This all-thermoplastic diaphragm back pressure valve for chemical feed systems applies back-pressure to a metering pump to prevent siphoning, and it eliminates varying dosage rates resulting from fluctuating downstream pressure. When the preset pressure is exceeded, the diaphragm is forced up, and chemical flows through the valve to the injection point. Installation should be as close to the injection point as possible to prevent chemical line drainage, and it is essential that all chemical system equipment such as pulsation dampeners and pressure gauges are between the pump and back pressure valve. Typical applications include chemical dosing, transfer, processing, and chlorination systems.

PVC or CPVC body
PTFE/EPDM diaphragm
304 stainless steel bolting
FNPT threads
Anti-siphon function
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 22473	1/4" PBV Series PVC Diaphragm Back Pressure Valve 265.17/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	265.17/Each Special Order
Item 22474	3/8" PBV Series PVC Diaphragm Back Pressure Valve 265.17/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	265.17/Each In Stock
Item 22475	1/2" PBV Series PVC Diaphragm Back Pressure Valve 288.56/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	288.56/Each In Stock
Item 22476	3/4" PBV Series PVC Diaphragm Back Pressure Valve 583.37/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	583.37/Each Drop Ship
Item 22477	1" PBV Series PVC Diaphragm Back Pressure Valve 753.49/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	753.49/Each Drop Ship
Item 22478	1-1/2" PBV Series PVC Diaphragm Pressure Relief Valve 1656.85/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	1656.85/Each Drop Ship
Item 22479	2" PBV Series PVC Diaphragm Back Pressure Valve 1875/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	1875/Each Drop Ship
Item 22480	1/4" PBV Series CPVC Diaphragm Back Pressure Valve 374.87/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	374.87/Each Drop Ship
Item 22481	3/8" PBV Series CPVC Diaphragm Back Pressure Valve 381.85/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	381.85/Each Drop Ship
Item 22482	1/2" PBV Series CPVC Diaphragm Back Pressure Valve 521.7/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	521.7/Each Drop Ship
Item 22483	3/4" PBV Series CPVC Diaphragm Back Pressure Valve 745.04/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	745.04/Each Drop Ship
Item 22484	1" PBV Series CPVC Diaphragm Back Pressure Valve 1033.41/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	1033.41/Each Drop Ship
Item 22485	1-1/2" PBV Series CPVC Diaphragm Back Pressure Valve 2501.75/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	2501.75/Each Drop Ship
Item 22486	2" PBV Series CPVC Diaphragm Back Pressure Valve 2760.11/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-497	2760.11/Each Drop Ship