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)

Stock	Description	Catalog Pg.	Price
Item 22473	1/4" PBV Series PVC Diaphragm Back Pressure Valve 252.56/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-488	252.56/Each Out of Stock (On Order)
Item 22474	3/8" PBV Series PVC Diaphragm Back Pressure Valve 252.56/Each In Stock Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	252.56/Each In Stock
Item 22475	1/2" PBV Series PVC Diaphragm Back Pressure Valve 274.83/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-488	274.83/Each Out of Stock (On Order)
Item 22476	3/4" PBV Series PVC Diaphragm Back Pressure Valve 555.6/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	555.6/Each Drop Ship
Item 22477	1" PBV Series PVC Diaphragm Back Pressure Valve 717.63/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	717.63/Each Drop Ship
Item 22478	1-1/2" PBV Series PVC Diaphragm Pressure Relief Valve 1577.97/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	1577.97/Each Drop Ship
Item 22479	2" PBV Series PVC Diaphragm Back Pressure Valve 1785.75/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	1785.75/Each Drop Ship
Item 22480	1/4" PBV Series CPVC Diaphragm Back Pressure Valve 357.03/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	357.03/Each Drop Ship
Item 22481	3/8" PBV Series CPVC Diaphragm Back Pressure Valve 363.65/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	363.65/Each Drop Ship
Item 22482	1/2" PBV Series CPVC Diaphragm Back Pressure Valve 496.87/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	496.87/Each Drop Ship
Item 22483	3/4" PBV Series CPVC Diaphragm Back Pressure Valve 709.58/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	709.58/Each Drop Ship
Item 22484	1" PBV Series CPVC Diaphragm Back Pressure Valve 984.23/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	984.23/Each Drop Ship
Item 22485	1-1/2" PBV Series CPVC Diaphragm Back Pressure Valve 2382.62/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	2382.62/Each Drop Ship
Item 22486	2" PBV Series CPVC Diaphragm Back Pressure Valve 2628.68/Each Drop Ship Save 5% when you buy 2+ Save 10% when you buy 4+ Save 15% when you buy 12+	P-488	2628.68/Each Drop Ship