1 inch Gate Valve Threaded sch. 80 material KBI. Body and stem made of hi-impact PVC type II material for increased strength with impact resistant handle. Heady duty - non-rising stem construction. All plastic for corrosion resistance. Comples with all applicable ASTM and ANSI standards. Polypropylene wedge for smooth sealing and longer service. (EPDM O ring). 150 PSI working pressure at 73 degrees. Full flow operation -- 1/2 in. to 2 in. size range.