GB的标准大喊大叫封球阀门

globe valve,stop valve ,GB standard bellow sealed glove valve. GB standard bellow sealed globe valve is apply to various kinds of working conditions pipeline such as petroleum,chemical industry,pharmacy,fertilizer,and power industry etc.Under normal pressure in the PN1.6-4.0Mpa and operating temperature at -20 degrees-350 degress.taht is used to cut off or connected the pipeline medium. GB standard bellow sealed globe valve/stop valve 1.it has logical structure ,reliable seal,excellent peroformance and nice design. 2.Sealing face is overlayed by STL,which is friction-resisance ,corrosion-resistaned to ensure a long time use life. 3.Stem Heat-treatment and surface nitriding-treatment to sure fuction of corrosion-resistanced and friction-resistanced. 4.It has double seal,thus the capability is more reliable. 5.The stem may show the position of lift,thus it is more clearer. 6.The parts material ,flanged and butt welding dimension may selected according to current operating condition or user's requirment to meeting the requirements of various engineering. Technical specification of globe valve/stope valve: ConstructionBB-BG-OS&YOperationHand operated/ PneumaticDesign standardDIN3356Face to face dimensionDIN3202Flanged endsDIN2543-2545Test&inspectionDIN3230 Performance specification: Nominal pressure(Mpa)Shell test(Mpa)sealing test(Mpa)1.62.41.762.53.752.754.06.04.4 Suitable tem(degree)suitable medium -20-350water ,steam,oil,etc Main parts No.Part nameMaterial1BodyWCB,F304,F3162Disc2Cr13,F304,F3163Hinge pinF304,F3164Bellows combinationF304,F316L5BonnetWCB,F304,F3166packingFlexible graphite,PTEF7Gland25#,F304,F3168Locator25#,F304,F3169Stem nutZQA19-410Hand wheelCarbon steel11Cap25#12Oil CupBrass13Hexagon nutASTM A1932H,A193-B8,A-193-8314BoltASTM193-B7,A193-B8,A193-B8m15Combination gasketFlexible graphite+stainless steel,PTEF13Stem2Cr13,F304,F316