Stainless Steel Sanitary check valve 1) Working medium: water,gas ,oil,acid,etc 2) Connection: threaded,welding,clamp,flange 3) Temperature: -20 degree~135degree 4) Surface treatment:Ra≤0.8μm 5) Max bar:10 bar 6) Gaskets: NBR,EPDM,SILICON,PTFE,VITON 7)..