Gate Valve Brass Construction 125 Psi Water, Oil Or Air, At Temperatures Up To 210 Degree Fahrenheit. Solid Wedge Disc, Full-Flow, Exclusive Double O -Ring, Non-Rising, Square End Stem, Heavy Cast-Iron Handle. Threaded Ends Comply With Ansi B2. Gate Valves Are Designed For Use In A Fully Open Or Closed Position.