Valves - Self Closing Safety Release Valves Item Model No. Inlet Outlet Specification SCSR VALVE TVL-SCSRV 34N20,3/4 NGT,20 MM SCSR VALVE TVL-SCSRV 26220,26 X 2,20 MM SCSR VALVE TVL-SCSRV M2620,M 26,20 MM SCSR VALVE TVL-SCSRV D47720,DIN 477,20 MM SCSR VALVE TVL-SCSRV 34N21,3/4 NGT,21 MM SCSR VALVE TVL-SCSRV 26221,26 X 2,21 MM SCSR VALVE TVL-SCSRV M2621,M 26,21 MM SCSR VALVE TVL-SCSRV D47721,DIN 477,21 MM SCSR VALVE TVL-SCSRV 34N22,3/4 NGT,22 MM SCSR VALVE TVL-SCSRV 26222,26 X 2,22 MM SCSR VALVE TVL-SCSRV M2622,M 26,22 MM SCSR VALVE TVL-SCSRV D47722,DIN 477,22 MM SCSR VALVE TVL-SCSRV 34N27,3/4 NGT,27 MM SCSR VALVE TVL-SCSRV 26227,26 X 2,27 MM SCSR VALVE TVL-SCSRV M2627,M 26,27 MM SCSR VALVE TVL-SCSRV D47727,DIN 477,27 MM