台湾317青铜安全阀SV-B27、S3W-A(SV-B27) BRonZE SAFETY RELIEF VALVE (OLD MODEL: S3W-A) MODEL:  SV-B27 / SVP-B27 WITHOUT LEVERMODEL:  SV-B29 / SVP-B29 WITH LEVER SV-B27/SV-B29 optional Pressure: 10.5~20 Kgf/cm2When placing order, please indicateWorking Pressure The Disc can be replaced withPTFEfor good effect of anti-leakage. (Model: SVP-B27, SVP-B29) Working Fluid : SV-B27/SV-B29/SVP-B29Non-Corrosive Gas, Air, Steam.SVP-B27 (without lever)Non-Corrosive Gas, Liquid, Air, Steam, Water, Oil.Working Temp: -45℃～185℃Working Pressure: SV-B27 / SV-B29 :0.3 ~ 10 Kgf/cm2 11 ~ 20 Kgf/cm2SVP-B27 / SVP-B29 (PTFE)3 ~ 10 Kgf/cm2Thread End: BSPT (BS21), NPT (ANSI B2.1)MATERIAL:No./ Parts W/O Lever SV-B27 (S3W-A) SVP-B27 With Lever SV-B29 (S3W-LR) SVP-B29  Type : metaL TO metaL PTFE1 Valve Seat FORGE BRASS FORGE BRASS2 Valve Disc FORGE BRASS FORGE BRASS3 Valve spindle(Stem) FORGE BRASS FORGE BRASS3-1 Valve Seal - PTFE4 Valve Body BRonZE BRONZE5 Spring Shoe BsBM BsBM6 Adjusting Screw BsBM BsBM7 Stop Nut BsBM BsBM8 Cap FORGE BRASS FORGE BRASS9 Lever (Type: B29) STEEL STEEL10 Spring SWOSC-V SWOSC-V11 Screw Washer BsBM BsBM12 Hexagon Nut BsBM BsBM13 Stop Bolt BsBM BsBM14 Pin BsBF BsBFThis type of safety valve is characterized by regulating of pressure in valve rising and blowing-out when actuated and is the smallest and lightest valve, and also can be used in non-corrosive gases (air, oxygen, nitrogen, etc.) steam and liquids, such as water and oil. The sizes shown in the chart are subject to change without notice. NominalDiameter Valve SeatDiameter D Lift l Effective Area mm2 L1E L2F Fitting Screw Closed Type Lever Type 2.22Dl πDl 0.785D2 Inlet d1 Outlet d2 A mm Weight A1 mm Weight12 12 0.52 13.32 18.84 113.0 29 50 PT 1/2 PF 1/2 138 0.52 161 0.5919 19 0.76 32.05 45.36 283.3 36 58 PT 3/4 PF 3/4 150 0.66 172 0.7425 25 1.00 55.50 78.53 490.6 40 70 PT 1 PF 1 180 1.09 202 1.1932 32 1.28 90.93 128.67 803.8 50 82 PT 1.1/4 PF 1.1/4 206 1.90 222 1.9438 38 1.52 128.22 181.45 1133.5 54 93 PT 1.1/2 PF 1.1/2 231 2.35 246 2.3950 50 2.00 222.00 314.15 1962.5 67 102 PT 2 PF 2 265 3.85 282 4.11