产品结构特点●阀体有铸造和焊接两种结构。●阀座采用O形密封圈密封和施加预紧力的浮动阀座结构，使阀门进出口双向密封；并且该结构的启闭力矩仅为普通阀门的1/2，能达到轻松开、关阀门。●阀座采用密封面上镶嵌PTFE，具有PTFE对金属和金属对金属的双重密封，PTFE密封面同时清除闸板脏物的作用。●金属对金属密封的阀门，阀体外部设有注油脂结构，油脂通过注脂器、阀座进入阀门密封面，使阀门达到零泄漏。●带导流孔阀门的闸板，无论是全开或是全关始终与密封面吻合，密封面得到保护不受介质直接冲刷，从而延长使用寿命。●阀门在全开时，通道平滑为直线，流阻系数极小，无压力损失，可通毛球清扫管线。●本阀门采用带自密封能力的填料结构，无需经常调节，开、关极为轻便，且密封性可靠，填料函处设有辅助密封油脂注入结构，密封性能绝对可靠，真正达到零泄漏；解决了通用阀门填料处最容易外漏的弊病。●阀门关闭时能自动卸掉内腔高压（详见工作原理图），保证使用安全。●全封闭结构，防护性能好，可适应全天候要求。●阀门设有指示杆或观察窗以表示阀门的启闭情况。产品性能规范压力等级常温试验压力（MPa)适用温度适用介质壳体试验左密封右密封低气压密封普通型抗硫型公称压力(MPa)1.62.41.761.760.6-29～121℃或按用户要求石油、天然气、水等非腐蚀性介质含H2S、CO2的石油、天然气、水等腐蚀性介质2.53.752.752.750.64.06.04.44.40.66.49.67.047.040.610.015.011.011.00.616.024.017.617.60.6磅级（Lb)1503.02.22.20.63007.55.55.50.660015.011.011.00.690022.517.517.50.6要外形尺寸型号(K)Z5(6、9)4(6)3(4)W(P)(F、Y、D）PN1.6、2.5MPaPN2.0MPa(Class150)DN(mm)NPS(in)法兰对焊轻型手动齿动齿动装置气动液动电动电动装置无导流孔有导流孔LL1L2HH2D0BB1B0PP1P0EE1E0H3H1251127127-360250180------------60853211/4140140-375260180------------711034011/2165165-410290250------------75115502178216-450315250----525430250----851226521/2190241-550420300----648560300----91154803203283-610428300----730630300----1091691004229305150700494300770650310BA-0850720300912790200SMC-041211931506267403150895625350965800310BA-011209203501107920500SMC-03178283200829241918011307843501200960310BA-01430116035013901120500SMC-0321135225010330457180129093740013601080310BA-01665138040015501250500SMC-03215440300123565022001480108045015601200310BA-01930155045017401400305SMC-00245514350143815722001660128350017401350460BA-12185175045019131550305SMC-00280602400164066102181850141750019301500460BA-12450200050021031620305SMC-00310678450184326602182080148960021601680460BA-12755225050023651830305SMC-0346785500204577112292300167270024201850460BA-13050245060025851980305SMC-0363855600245088132482680201280028002120460BA-23580290080029902300305SMC-14421045700286109142863080225080032002450460BA-24130335080033902600305SMC-150511908003266096528634912550100036402800460BA-2---38502980305SMC-15601350900367111016-38972850100040503080600BA-3---42603200458SMC-26101510100040811--43173250120044673400600BA-3---46773600458SMC-27151715)