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 300.6/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	300.6/Each Special Order
Item 22474	3/8" PBV Series PVC Diaphragm Back Pressure Valve 300.6/Each Special Order Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	300.6/Each Special Order
Item 22475	1/2" PBV Series PVC Diaphragm Back Pressure Valve 327.19/Each Out of Stock (On Order) Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	327.19/Each Out of Stock (On Order)
Item 22476	3/4" PBV Series PVC Diaphragm Back Pressure Valve 661.44/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	661.44/Each Drop Ship
Item 22477	1" PBV Series PVC Diaphragm Back Pressure Valve 854.34/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	854.34/Each Drop Ship
Item 22478	1-1/2" PBV Series PVC Diaphragm Pressure Relief Valve 1878.51/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	1878.51/Each Drop Ship
Item 22479	2" PBV Series PVC Diaphragm Back Pressure Valve 2125.87/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	2125.87/Each Drop Ship
Item 22480	1/4" PBV Series CPVC Diaphragm Back Pressure Valve 425.01/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	425.01/Each Drop Ship
Item 22481	3/8" PBV Series CPVC Diaphragm Back Pressure Valve 432.93/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	432.93/Each Drop Ship
Item 22482	1/2" PBV Series CPVC Diaphragm Back Pressure Valve 591.49/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	591.49/Each Drop Ship
Item 22483	3/4" PBV Series CPVC Diaphragm Back Pressure Valve 844.77/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	844.77/Each Drop Ship
Item 22484	1" PBV Series CPVC Diaphragm Back Pressure Valve 1171.68/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	1171.68/Each Drop Ship
Item 22485	1-1/2" PBV Series CPVC Diaphragm Back Pressure Valve 2836.52/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	2836.52/Each Drop Ship
Item 22486	2" PBV Series CPVC Diaphragm Back Pressure Valve 3129.42/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-573	3129.42/Each Drop Ship

Note: Product testing for individual applications is recommended before use. U.S. Plastic Corp. cannot be held liable for individual application failures.