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丝扣连接，便于安全装安全可靠，性能稳定设计精巧，体积不大No./ Parts W/O Lever A21W-16P A21W-16P With Lever A221W-16P A221W-16P Type : METAL TO METAL PTFE1 Cap SS304 SS3042 Valve spindle(Stem) FORGE SS304 FORGE SS3043 Adjusting screw SS304 SS3044 Stop Nut SS304 SS3045 Valve Body CF8M CF8M6 Spring 50CrVA 50CrVA7 Spring Shoe SS304 SS3048 Valve Disc FORGE SS304 FORGE SS3049 Valve Seal -- PTFE10 Valve Seat CF8M CF8M11 Lever (Type: B29) STEEL STEELNominalDiameter Valve SeatDiameter D Lift l Effective Area mm2 L2F L1E Fitting Screw Closed Type Lever Type 2.22Dl πD l 0.785D2 Inlet d1 Outlet d2 Amm Weight A1mm 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