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          NKJ61H vacuum valve
          Product Name:
          NKJ61H vacuum valve
          Description:

          真空截止閥 NKJ61H

          主要結構特點及用途
          1、本系列閥門主體采用鑄鍛結構,具有平行雙密封副半強制雙向密封,密封面到位運動和楔形塊楔緊運動分步作用實現零泄漏。
          2、密封面運動磨擦力小、啟閉輕便,而且密封面磨損有自動補償功能。
          3、結構簡單、緊湊、檢修方便,使用壽命長。
          4、閥蓋填料室設有真空密封結構,具有自脹壓緊作用,并且密封采用高強膨脹材料密封,使系統(tǒng)與大氣完全隔離,具有很好的系統(tǒng)氣密性。
          5、本系列閥門連接形式分法蘭、焊接兩種,驅動方式有手動、電動兩種。
          該閥門適用于工作溫度≤425℃和≤550℃,工作介質為水、蒸汽或空氣的管路上,作為啟閉裝置;尤其適用于火電廠汽機冷凝和真空負壓系統(tǒng),起真空隔離密封作用。
          閥門結構型式 Valve ctrucure type
          NKJ61型真空隔離截止閥;
          NKJ61型閥門主要性能規(guī)范

          產品類型
          Product type
          殼體強度試驗/MPa
          Sheli strangth test
          上密封試驗/MPa
          Back seal test
          密封試驗/MPa
          Seal test
          適用介質
          Applicable
          medium
          適用溫度/℃
          Applicable
          temperature
          NKJ61H-40
          6.O
          4.4
          4.4
          水、蒸汽、空氣
          Water、Steam、Air
            ≤425
          NKJ61H-64
          96
          7.O
          7.O
          NKJ61H-100
          15.O
          11.0
          11.O
          NKJ61Y-40l
          6.O
          4.4
          4.4
          水、蒸汽、空氣
          Water、Steam、Air
            ≤550
          NKJ61Y-64l
          9.6
          7.0
          7.O
          NKJ61Y-1OOI
          15.O
          11.O
          11.O

          ·主要零件材料 Material for Main Parts

          零件名稱
          Part name
          閥體、閥蓋 Body Bonnet
          閥桿
          Valve Stem
          閥瓣 Disc
          密封面
          Sealing face
          閥桿螺母
          Yokenut
          填料
          Packing
          緊固件
          Fasteher
          NKJ61H-C型
          25或WCB
          鉻不銹鋼
          Crstain
          mless
          teel
          鉻不銹鋼
          Crstain
          mless
          steel
          H:合金鋼
          H:alloy steel
          鋁青銅
          AI
          bronze
          膨脹復合石墨
          Expanding
          compound
          graphlte
          優(yōu)質碳鋼
          High-grade
          carbon
          steel
          NKJ61Y-l型
          鉻鉬鋼
          Cr.Mo steel
          20CrlM01vA 或38CrMoAlA
          12CrlMo 1VA
          Y:硬質合金
          Y:oarbide alloy
          鉻鉬鋼
          Cr.Mo steel

          ·真空隔離截止閥
            

           

           
          ·主要尺寸及重量 Main dimensions and weight
          公稱通徑
          DN/mm
          Nominal
          diameter
          公稱壓力
          PN/MPa
          Nominal
          pressure
          主要外形尺寸和連接尺寸/mm
          Main extemal and connectingd mensions
          L
          H
          D
          D0
          D1
          L1
          α
          W
          1O
          4.0
          130
          245
          36
          11
          18.4
          1O
          -
          120
          15
          130
          245
          36
          16
          22.5
          1O
          -
          120
          20
          150
          265
          44
          21
          28.5
          11
          -
          160
          25
          160
          270
          48
          26
          34.5
          12
          -
          200
          32
          180
          285
          48
          34
          -
          -
          37o30’
          200
          40
          200
          320
          55
          40
          -
          -
          37o30’
          240
          50
          230
          365
          64
          48
          -
          -
          37o30’
          320
          65
          290
          41O
          82
          66
          -
          -
          37o30’
          300
          80
          31O
          430
          95
          78
          -
          -
          37o30’
          300
          100
          350
          470
          117
          1OO
          -
          -
          37o30’
          350
          125
          400
          500
          143
          126
          -
          -
          37o30’
          350
          150
          480
          533
          167
          150
          -
          -
          37o30’
          400
          1O
          6.4
          130
          245
          36
          1O
          18.4
          1O
          -
          120
          15
          130
          245
          36
          15
          22.5
          1O
          -
          120
          20
          150
          265
          44
          20
          28.5
          11
          -
          160
          25
          160
          270
          48
          25
          34.5
          12
          -
          200
          32
          180
          280
          48
          33
          -
          -
          37o30’
          200
          40
          200
          320
          55
          39
          -
          -
          37o30’
          240
          50
          230
          365
          64
          48
          -
          -
          37o30’
          320
          65
          290
          41O
          82
          65
          -
          -
          37o30’
          320
          80
          31O
          430
          95
          76
          -
          -
          37o30’
          360
          100
          350
          470
          117
          98
          -
          -
          37o30’
          400
          125
          480
          500
          143
          123
          -
          -
          37o30’
          400
          150
          480
          533
          167
          148
          -
          -
          37o30’
          500
          1O
          10.O
          130
          245
          36
          1O
          18.4
          1O
          -
          120
          15
          130
          245
          36
          14
          22.5
          1O
          -
          120
          20
          150
          265
          44
          20
          28.5
          11
          -
          160
          25
          160
          270
          48
          25
          34.5
          12
          -
          200
          32
          180
          285
          48
          32
          -
          -
          37o30’
          200
          40
          200
          320
          55
          38
          -
          -
          37o30’
          240
          50
          230
          355
          64
          48
          -
          -
          37o30’
          320
          65
          290
          41O
          82
          63
          -
          -
          37o30’
          320
          80
          31O
          430
          95
          74
          -
          -
          37o30’
          360
          1OO
          350
          470
          117
          97
          -
          -
          37o30’
          400
          125
          400
          500
          143
          123
          -
          -
          37o30’
          400
          150
          480
          533
          167
          148
          -
          -
          37o30’
          500
          注:PN4.0(40)閥門允許作為PN1.0(10)、PN1.6(16)PN2.5(25)壓力級選用


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