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 283.5/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	283.5/Each Special Order
Item 22474	3/8" PBV Series PVC Diaphragm Back Pressure Valve 283.5/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	283.5/Each Special Order
Item 22475	1/2" PBV Series PVC Diaphragm Back Pressure Valve 308.53/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	308.53/Each In Stock
Item 22476	3/4" PBV Series PVC Diaphragm Back Pressure Valve 623.69/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	623.69/Each Drop Ship
Item 22477	1" PBV Series PVC Diaphragm Back Pressure Valve 805.58/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	805.58/Each Drop Ship
Item 22478	1-1/2" PBV Series PVC Diaphragm Pressure Relief Valve 1771.38/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	1771.38/Each Drop Ship
Item 22479	2" PBV Series PVC Diaphragm Back Pressure Valve 2004.63/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	2004.63/Each Drop Ship
Item 22480	1/4" PBV Series CPVC Diaphragm Back Pressure Valve 400.79/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	400.79/Each Drop Ship
Item 22481	3/8" PBV Series CPVC Diaphragm Back Pressure Valve 408.26/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	408.26/Each Drop Ship
Item 22482	1/2" PBV Series CPVC Diaphragm Back Pressure Valve 557.77/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	557.77/Each Drop Ship
Item 22483	3/4" PBV Series CPVC Diaphragm Back Pressure Valve 796.55/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	796.55/Each Drop Ship
Item 22484	1" PBV Series CPVC Diaphragm Back Pressure Valve 1104.85/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	1104.85/Each Drop Ship
Item 22485	1-1/2" PBV Series CPVC Diaphragm Back Pressure Valve 2674.7/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	2674.7/Each Drop Ship
Item 22486	2" PBV Series CPVC Diaphragm Back Pressure Valve 2950.91/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-515	2950.91/Each Drop Ship