NICHOLSON 3/4 NFT250-20 Steam Trap, 20 psi, 450F, 4-1/4 In. L. More details: Steam Trap, Max. Operating PSI 20 psi, Max. Temp. 450 Degrees F, Body Material Cast Iron, Downstream PSI Range 20 psi, (F)NPT Connections 3/4 In., NPT Outlet 3/4 In., Pipe Configuration Straight, Pressure Air Vent Releases Air and Non-Condensable Gases that Adversely Affect the Heat Transfer of a Steam System, Application Process Steam Trap, Includes Integral Strainer, Condensate Capacity Lbs/Hr 1200, End to End Length 4-1/4 In.