NDS 1700C15 1.5 in. Slip x Slip Valve with Union, Clear

Check Valve, Flo Control, Spring, 1-1/2"s, 1/2 lb,True Union. First Plumbing Connection Size: 1-1/2"; Slip (s) w/ Union. Second Plumbing Connection Size: 1-1/2"; Slip (s) w/ Union. Spring Tension: 1/2 lb. Air Blower Fitting Type: union check valve.