Full Bore Stainless Steel Female Thread Gate Valve(200WOG) Description:Z11W Norminal Pressure:2.5 4.0Mpa Main size:1/2" 3/4" 1" 1-1/4" 1-1/2"2" Materials of main parts: Valve body:WCB CF8 CF8M Bonnet:CF8,CF8M Stem:SS304 SS316 Sealing:PTFE Gasket:PTFE Snap Spring:SS304,SS316 Gland Nut:SS304,SS316 Handwheel:HT(C.R.)