Stainless Steel Female Thread Swing-Check Valve(200WOG) Description:H14W 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:CF8 CF8M Sealring:PTFE Disc:CF8,CF8M Cap:CF8 Pin:SS304