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 Add to Cart
1/4" PBV Series PVC Diaphragm Back Pressure Valve
Item 22473
265.17/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
265.17/Each
3/8" PBV Series PVC Diaphragm Back Pressure Valve
Item 22474
265.17/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
265.17/Each
1/2" PBV Series PVC Diaphragm Back Pressure Valve
Item 22475
288.56/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
288.56/Each
3/4" PBV Series PVC Diaphragm Back Pressure Valve
Item 22476
583.37/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
583.37/Each
1" PBV Series PVC Diaphragm Back Pressure Valve
Item 22477
753.49/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
753.49/Each
1-1/2" PBV Series PVC Diaphragm Pressure Relief Valve
Item 22478
1656.85/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
1656.85/Each
2" PBV Series PVC Diaphragm Back Pressure Valve
Item 22479
1875/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
1875/Each
1/4" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22480
374.87/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
374.87/Each
3/8" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22481
381.85/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
381.85/Each
1/2" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22482
521.7/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
521.7/Each
3/4" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22483
745.04/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
745.04/Each
1" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22484
1033.41/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
1033.41/Each
1-1/2" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22485
2501.75/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
2501.75/Each
2" PBV Series CPVC Diaphragm Back Pressure Valve
Item 22486
2760.11/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-497
2760.11/Each