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
1/4" PBV Series PVC Diaphragm Back Pressure Valve
Item 22473
220.27/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
220.27/Each
3/8" PBV Series PVC Diaphragm Back Pressure Valve
Item 22474
220.27/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
220.27/Each
1/2" PBV Series PVC Diaphragm Back Pressure Valve
Item 22475
239.67/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
239.67/Each
3/4" PBV Series PVC Diaphragm Back Pressure Valve
Item 22476
484.66/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
484.66/Each
1" PBV Series PVC Diaphragm Back Pressure Valve
Item 22477
625.97/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
625.97/Each
1-1/2" PBV Series PVC Diaphragm Pressure Relief Valve
Item 22478
1376.43/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
1376.43/Each
2" PBV Series PVC Diaphragm Back Pressure Valve
Item 22479
1557.72/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
1557.72/Each
1/4" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22480
317.18/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
317.18/Each
3/8" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22481
317.18/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
317.18/Each
1/2" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22482
433.44/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
433.44/Each
3/4" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22483
619.01/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
619.01/Each
1" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22484
858.5/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
858.5/Each
1-1/2" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22485
2078.42/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
2078.42/Each
2" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22486
2293.07/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-472
2293.07/Each