详细介绍 截止阀系列:NKJ61H真空截止阀,真空隔离截止阀 点击放大图片 真空截止阀,真空隔离截止阀的详细资料:NKJ61H真空截止阀主要结构特点及用途NKJ61H真空截止阀主体采用铸锻结构,具有平行双密封副半强制双向密封,密封面到位运动和楔形块楔紧运动分步作用实现零泄漏。NKJ61H真空截止阀密封面运动磨擦力小、启闭轻便,而且密封面磨损有自动补偿功能。NKJ61H真空截止阀 结构简单、紧凑、检修方便,使用寿命长。NKJ61H真空截止阀阀盖填料室设有真空密封结构,具有自胀压紧作用,并且密封采用高强膨胀材料密封,使系统与大气*隔离,具有很好的系统气密性。NKJ61H真空截止阀连接形式分法兰、焊接两种,驱动方式有手动、电动两种。NKJ61H真空截止阀适用于工作温度≤425℃和≤550℃,工作介质为水、蒸汽或空气的管路上,作为启闭装置;尤其适用于火电厂汽机冷凝和真空负压系统,起真空隔离密封作用。NKJ61H真空截止阀结构型式Valve ctrucure type产品类型Product type壳体强度试验/MPaSheli strangth test上密封试验/MPaBack seal test密封试验/MPaSeal test适用介质Applicablemedium适用温度/℃ApplicabletemperatureNKJ61H-406.O4.44.4水、蒸汽、空气Water、Steam、Air ≤425NKJ61H-64967.O7.ONKJ61H-10015.O11.011.ONKJ61Y-40l6.O4.44.4水、蒸汽、空气Water、Steam、Air ≤550NKJ61Y-64l9.67.07.ONKJ61Y-1OOI15.O11.O11.ONKJ61H真空截止阀主要零件材料Material for Main Parts零件名称Part name阀体、阀盖Body Bonnet阀杆Valve Stem 阀瓣Disc密封面Sealing face阀杆螺母Yokenut填料Packing紧固件FasteherNKJ61H-C型25或WCB铬不锈钢Crstainmlessteel铬不锈钢Crstainmlesssteel H:合金钢H:alloy steel 铝青铜AIbronze 膨胀复合石墨Expandingcompoundgraphlte优质碳钢High-gradecarbonsteelNKJ61Y-l型铬钼钢Cr.Mo steel20CrlM01vA 或38CrMoAlA12CrlMo 1VAY:硬质合金Y:oarbide alloy 铬钼钢Cr.Mo steelNKJ61H真空截止阀主要尺寸及重量Main dimensions and weight公称通径DN/mmNominaldiameter公称压力PN/MPaNominalpressure 主要外形尺寸和连接尺寸/mmMain extemal and connectingd mensionsLHDD0D1L1αW1O4.0130245361118.41O-12015130245361622.51O-12020150265442128.511-16025160270482634.512-200321802854834--37o30'200402003205540--37o30'240502303656448--37o30'3206529041O8266--37o30'3008031O4309578--37o30'3001003504701171OO--37o30'350125400500143126--37o30'350150480533167150--37o30'4001O6.4130245361O18.41O-12015130245361522.51O-12020150265442028.511-16025160270482534.512-200321802804833--37o30'200402003205539--37o30'240502303656448--37o30'3206529041O8265--37o30'3208031O4309576--37o30'36010035047011798--37o30'400125480500143123--37o30'400150480533167148--37o30'5001O10.O130245361O18.41O-12015130245361422.51O-12020150265442028.511-16025160270482534.512-200321802854832--37o30'200402003205538--37o30'240502303556448--37o30'3206529041O8263--37o30'3208031O4309574--37o30'3601OO35047011797--37o30'400125400500143123--37o30'400150480533167148--37o30'500注:PN4.0(40)阀门允许作为PN1.0(10)、PN1.6(16)、PN2.5(25)压力级选用NKJ61H真空截止阀