郑工阀门——闸阀系列产品：进口闸阀、德国进口闸阀、英国进口闸阀、日本进口闸阀、美国进口闸阀。手动闸阀、电动闸阀Z941、气动闸阀Z641、正齿轮传动闸阀Z442、Z441、伞齿轮传动闸阀Z542、Z541。保温闸阀BZ41H。两项流闸阀LXLZ971/3H。高温排渣闸阀。衬氟闸阀Z41F。高温高压闸阀Z41Y、Z61Y、高温闸阀Z41Y、Z61Y、高压闸阀Z41H、Z61H、高温高压对焊闸阀Z61、自密封闸阀Z61Y。弹性座封闸阀、消防信号闸阀、埋地式弹性座封闸阀 RVCX、RVHX、RRHX、RVEX、RRHN、RVHS。刀形闸阀PZ73H。内螺纹闸阀Z11W。法兰闸阀Z41H。差压油密封楔式性闸阀CYZD40H。自动调平油封闸阀KPTYZ42H。波纹管闸阀WZ41H。真空隔离闸阀NKZ44H、NKZ41H、NKZ61H、NKZ64H、水封闸阀DSZ64H、DSZ44H。放空导淋阀Z41W/Z61H。排污闸阀PZ48H/PZ44Y。平板闸阀、双平行闸板阀、带导流孔平板闸阀ZF23Y/ZF83Y/ZF43Y/ZF63Y。明杆闸阀、暗杆闸阀、楔式闸阀、黄铜闸阀、铸铁闸阀、碳钢闸阀、锻钢闸阀、不锈钢闸阀Z41W、铬钼钢闸阀、铬钼钒钢闸阀等。

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阀体材质:铸铁、铸钢、不锈钢、锻钢、铬钼钢、铬钼钒钢、黄铜，密封面材质:H、F46、Y、W、T、G。工作压力1.6-32MPA，工作温度-40°C- 550°C。阀门口径 DN15-DN600。连接方式:法兰、焊接、内螺纹。传动方式:手动、正齿轮、伞齿轮、气动、电动。适用介质:水、油品、气体、蒸汽、酸类。制造标准:国标、美标、日标、德标。

闸板有两个密封面,**常用的模式闸板阀的两个密封面形成楔形、楔形角随阀门参数而异,通常为50,介质温度不高时为 2°52\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"。楔式闸阀的闸板可以做成一个整体,叫做刚性闸板;也可以做成能产生微量变形的闸板,以改善其工艺性,弥补密封面角度在加工过程中产生的偏差,这种闸板叫做弹性闸板。

闸阀的种类,按密封面配置可分为楔式闸板式闸阀和平行闸板式闸阀 , 楔式闸板式闸阀又可分为:单闸板式、双闸板式和弹性闸板式；平行闸板式闸阀可分为单闸板式和双闸板式。按阀杆的螺纹位置划分，可分为明杆闸阀和暗杆闸阀两种。闸阀关闭时,密封面可以只依靠介质压力来密封,即依靠介质压力将闸板的密封面压向另一侧的阀座来保证密封面的密封，这就是自密封。大部分闸阀是采用强制密封的,即阀门关闭时，要依靠外力强行将闸板压向阀座,以保证密封面的密封性。

闸阀的闸板随阀杆一起作直线运动的,叫升降杆闸阀（亦叫明杆闸阀）。通常在升降杆上 有梯形螺纹，通过阀门顶端的螺母以及阀体上的导槽，将旋转运动变为直线运动,也就是将操作转矩变为操作推力。