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700XL Dual Check Valve with 3/4 female union inlet x 3/4" male outlet

700XL Dual Check Valve with 1" female meter union inlet x 3/4" female union

700XL Dual Check Valve (3/4" FNTC X 3/4" MMCT)

1/2" 40XL2 In-Line Single Check Valve

700XL Dual Check Valve with 3/8" female union inlet x 3/8" female outlet

700XL Dual Check Valve with 1/2" Female Union Inlet x 1/2" Female Outlet

1/4" x Dual Check Valve

700XL Dual Check Valve 1" X 1"

700 Dual Check Valve (1" FNPT x 1" FNPT)

3/4" 705 Dual Check Valve with Female NPT Threaded Union Inlet Connection

1" 705 Dual Check Valve with Female NPT Threaded Union Inlet Connection