Manufacturer United Brass Part Number 68
THREADED CHECK VALVES Size 4" 250 lbs. WOG (Specify Service if other than cold water) 100% Hydrostatic Tested Ductile Iron Body "O" Ring Seals Bronze Clapper and Seat Ring Stainless Steel Spring Closing UL Listed/FM Approved "68" - 4" NPT Male X 4" NPT Female "68TXG" - 4" NPT Male X 4" Grooved