Check valves 4 in Pipe size
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![Hayward SLC10400TEU 4" PVC Spring-Loaded True Union Y-Check Valve w/EPDM o-ring seal, threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/SLC_Series_Spring_Loaded_Y_Check_Valves_Hero_ecom_fc3f_118725a1-5922-4395-b2c0-fe3719288a91_medium.png?v=1720094312)
SLC10400TEU | 4" PVC Spring-Loaded True Union Y-Check Valve w / EPDM o-ring seal, threaded end connections | Hayward
Brand: Hayward
SKU: SLC10400TEU
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![Hayward SLC10400SU 4" PVC Spring-Loaded True Union Y-Check Valve w/FPM o-ring seal, socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/SLC_Series_Spring_Loaded_Y_Check_Valves_Hero_ecom_fc3f_fb4b65f5-84ce-43ec-ac10-8d4847f8e9de_medium.png?v=1719990163)
SLC10400SU | 4" PVC Spring-Loaded True Union Y-Check Valve w / FPM o-ring seal, socket end connections | Hayward
Brand: Hayward
SKU: SLC10400SU
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![Hayward SLC10400T 4" PVC Spring-Loaded Y-Check Valve w/FPM seal, threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/SLC_Series_Spring_Loaded_Y_Check_Valves_Hero_ecom_fc3f_3c10036d-7512-4892-90d7-935282924f0e_medium.png?v=1719990161)
SLC10400T | 4" PVC Spring-Loaded Y-Check Valve w / FPM seal, threaded end connections | Hayward
Brand: Hayward
SKU: SLC10400T
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![Hayward SLC10400SEU 4" PVC Spring-Loaded True Union Y-Check Valve w/EPDM o-ring seal, socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/SLC_Series_Spring_Loaded_Y_Check_Valves_Hero_ecom_fc3f_efd2b6d3-ab20-4a79-9998-bd3acbb207fa_medium.png?v=1719990157)
SLC10400SEU | 4" PVC Spring-Loaded True Union Y-Check Valve w / EPDM o-ring seal, socket end connections | Hayward
Brand: Hayward
SKU: SLC10400SEU
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![Hayward SW2400V 4" CPVC Swing Check Valve w/FPM seals; flanged end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/SW_Series_Swing_Check_Valves_Hero_ecom_3c04_9a4817c2-8d01-485b-b21d-280b07601971_medium.png?v=1720094316)
SW2400V | 4" CPVC Swing Check Valve w / FPM seals; flanged end connections | Hayward
Brand: Hayward
SKU: SW2400V
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![Hayward YC20400S 4" CPVC Y-Check Valve w/FPM o-ring seat and seal; socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_3319235d-a784-41aa-8703-71c52ecb0c40_medium.png?v=1719990608)
YC20400S | 4" CPVC Y-Check Valve w / FPM o-ring seat and seal; socket end connections | Hayward
Brand: Hayward
SKU: YC20400S
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![Hayward YC20400TU 4" CPVC True Union Y-Check Valve w/FPM o-ring seal, threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_78d1e61c-503f-4b0b-b44b-86c88624e6dc_medium.png?v=1719990558)
YC20400TU | 4" CPVC True Union Y-Check Valve w / FPM o-ring seal, threaded end connections | Hayward
Brand: Hayward
SKU: YC20400TU
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![Hayward YC20400T 4" CPVC Y-Check Valve w/FPM o-ring seat and seal; threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_3e6dff69-6891-4bb9-a1da-dec600b1a6e6_medium.png?v=1719990549)
YC20400T | 4" CPVC Y-Check Valve w / FPM o-ring seat and seal; threaded end connections | Hayward
Brand: Hayward
SKU: YC20400T
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![Hayward YC20400SU 4" CPVC True Union Y-Check Valve w/FPM o-ring seal, socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_04faed39-ccf6-4010-8393-fad5098de81e_medium.png?v=1719990534)
YC20400SU | 4" CPVC True Union Y-Check Valve w / FPM o-ring seal, socket end connections | Hayward
Brand: Hayward
SKU: YC20400SU
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![Hayward YC20400F 4" CPVC Y-Check Valve w/FPM o-ring seat and seal; flanged end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_51593649-91a3-43ee-a433-80e0eecb398d_medium.png?v=1719990508)
YC20400F | 4" CPVC Y-Check Valve w / FPM o-ring seat and seal; flanged end connections | Hayward
Brand: Hayward
SKU: YC20400F
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![Hayward YC20400SEU 4" CPVC True Union Y-Check Valve w/EPDM o-ring seal, socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_149913df-055a-4f2f-835e-683426514296_medium.png?v=1719990508)
YC20400SEU | 4" CPVC True Union Y-Check Valve w / EPDM o-ring seal, socket end connections | Hayward
Brand: Hayward
SKU: YC20400SEU
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![Hayward YC20400SE 4" CPVC Y-Check Valve w/EPDM o-ring seat and seal; socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_2d799b4c-b96e-4fbc-b490-9fa32094ff25_medium.png?v=1719990504)
YC20400SE | 4" CPVC Y-Check Valve w / EPDM o-ring seat and seal; socket end connections | Hayward
Brand: Hayward
SKU: YC20400SE
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![Hayward YC20400TE 4" CPVC Y-Check Valve w/EPDM o-ring seat and seal; threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_dbeca0dd-687e-47e3-a36c-9f4c3eab80db_medium.png?v=1719990503)
YC20400TE | 4" CPVC Y-Check Valve w / EPDM o-ring seat and seal; threaded end connections | Hayward
Brand: Hayward
SKU: YC20400TE
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![Hayward YC10400SE 4" PVC Y-Check Valve w/EPDM o-ring seat and seal; socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_7a973289-ec0d-420e-a2de-037988b1ec53_medium.png?v=1719990493)
YC10400SE | 4" PVC Y-Check Valve w / EPDM o-ring seat and seal; socket end connections | Hayward
Brand: Hayward
SKU: YC10400SE
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![Hayward YC10400TU 4" PVC True Union Y-Check Valve w/FPM o-ring seal, threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_b033c8ec-73ef-4d39-8e2b-9ec1e92df17b_medium.png?v=1719990488)
YC10400TU | 4" PVC True Union Y-Check Valve w / FPM o-ring seal, threaded end connections | Hayward
Brand: Hayward
SKU: YC10400TU
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![Hayward YC10400F 4" PVC Y-Check Valve w/FPM o-ring seat and seal; flanged end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_e1878ca1-aeb5-4dc2-971f-6f3ec7cb4107_medium.png?v=1719990488)
YC10400F | 4" PVC Y-Check Valve w / FPM o-ring seat and seal; flanged end connections | Hayward
Brand: Hayward
SKU: YC10400F
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![Hayward YC10400SEU 4" PVC True Union Y-Check Valve w/EPDM o-ring seal, socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_8aa6eabd-be4b-40c7-9e00-b880d354a7ba_medium.png?v=1719990488)
YC10400SEU | 4" PVC True Union Y-Check Valve w / EPDM o-ring seal, socket end connections | Hayward
Brand: Hayward
SKU: YC10400SEU
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![Hayward YC10400S 4" PVC Y-Check Valve w/FPM o-ring seat and seal; socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_757c6100-c188-4588-babb-32069dc9abd0_medium.png?v=1719990483)
YC10400S | 4" PVC Y-Check Valve w / FPM o-ring seat and seal; socket end connections | Hayward
Brand: Hayward
SKU: YC10400S
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![Hayward YC10400TE 4" PVC Y-Check Valve w/EPDM o-ring seat and seal; threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_43c40bf5-b577-485e-bb9b-7933d147ade6_medium.png?v=1719990483)
YC10400TE | 4" PVC Y-Check Valve w / EPDM o-ring seat and seal; threaded end connections | Hayward
Brand: Hayward
SKU: YC10400TE
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![Hayward YC10400SU 4" PVC True Union Y-Check Valve w/FPM o-ring seal, socket end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_987ccd56-a219-4747-b8cb-a7deaef33998_medium.png?v=1719990483)
YC10400SU | 4" PVC True Union Y-Check Valve w / FPM o-ring seal, socket end connections | Hayward
Brand: Hayward
SKU: YC10400SU
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![Hayward YC10400FE 4" PVC Y-Check Valve w/EPDM o-ring seat and seal; flanged end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_160d0876-d83c-4610-8536-830df61d2e20_medium.png?v=1719990483)
YC10400FE | 4" PVC Y-Check Valve w / EPDM o-ring seat and seal; flanged end connections | Hayward
Brand: Hayward
SKU: YC10400FE
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![Hayward YC10400T 4" PVC Y-Check Valve w/FPM o-ring seat and seal; threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_5fe73798-e7ce-46ed-b095-05e7290a922f_medium.png?v=1719990483)
YC10400T | 4" PVC Y-Check Valve w / FPM o-ring seat and seal; threaded end connections | Hayward
Brand: Hayward
SKU: YC10400T
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![Hayward YC10400TEU 4" PVC True Union Y-Check Valve w/EPDM o-ring seal, threaded end connections | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/YC_Series_Y_Check_Valves_Hero_ecom_7f4d_ff37db08-095a-40c0-a787-85ddb46f620c_medium.png?v=1719990473)
YC10400TEU | 4" PVC True Union Y-Check Valve w / EPDM o-ring seal, threaded end connections | Hayward
Brand: Hayward
SKU: YC10400TEU
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![Hayward WCV1400V 4" PVC Wafer Full Pattern Check Valve - FPM o-ring | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/WCV_Series_Full_Pattern_Wafer_Check_Valves_Hero_ecom_dba6_12e37386-7e24-4448-9afc-2c385e8ce28e_medium.png?v=1719990458)
WCV1400V | 4" PVC Wafer Full Pattern Check Valve - FPM o-ring | Hayward
Brand: Hayward
SKU: WCV1400V
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