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           Stainless steel check valve
          Product Name:
          Stainless steel check valve
          Description:


          不銹鋼止回閥

          型號: H41W 口徑: DN15-DN300
          壓力: 1.6MPA-10MPA 材質(zhì):

          止回閥(cheek valve):止回閥又稱單向閥或逆止閥,其作用是防止管路中的介質(zhì)倒流。水泵吸水關(guān)的底閥也屬于止回閥類。

          啟閉件靠介質(zhì)流動和力量自行開啟或關(guān)閉,以防止介質(zhì)倒流的閥門叫止回閥。止回閥屬于自動閥類,主要用于介質(zhì)單向流動的管道上,只允許介質(zhì)向一個方向流動,以防止發(fā)生事故。

          止回閥按結(jié)構(gòu)劃分,可分為升降式止回閥旋啟式止回閥和蝶式止回閥三種。升降式止回閥可分為立式和臥式兩種。旋啟式止回閥分為單瓣式、雙瓣式和多瓣式三種。蝶式止回閥為直通式、以上幾種止回閥在連接形式上可分為螺紋連接、法蘭連接和焊接三種。

          主要性能規(guī)范 Specifications

          型號
          Type
          公稱壓力
          PN(MPa)
          Nominal
          Pressure
          試驗(yàn)壓力PS(MPa)
          Test Pressure
          工作溫度
          (℃)
          Working
          Temprature
          工作壓力
          PN(MPa)
          適用介質(zhì)
          Suitable
          Medium
          殼體
          Shell
          密封
          Seal
          H41W-16P
          1.6
          2.4
          1.76
          ≤100
          1.6
          硝酸類 Nitric Acid
          H41W-16R
          醋酸類 Acetic Acid
          H41W-16A
          ≤150
          硝酸類 Nitric Acid
          H41W-25P
          2.5
          3.8
          2.8
          ≤100
          2.5
          醋酸類 Acetic Acid
          H41W-25R
          硝酸類 Nitric Acid
          H41W-25A
          ≤150
          醋酸類 Acetic Acid
          H41W-40P
          4.0
          6.0
          4.0
          ≤100
          4.0
          硝酸類 Nitric Acid
          H41W-40R
          醋酸類 Acetic Acid
          主要外形尺寸和連接尺寸( mm)
          Main external and connecting dimensions( mm)
          型號
          Type

          公稱通徑DN(mm)
          NominalDiameter

          尺寸(mm)Dimensions
          L
          D
          D
          D
          Z-φd
          b
          H


          H41W-16P(R)



          H44W-16P(R)
          15
          130
          95
          65
          45
          4-φ14
          14
          77
          20
          150
          105
          75
          55
          4-φ14
          14
          77
          25
          160
          115
          85
          65
          4-φ14
          16
          80
          32
          180
          135
          100
          78
          4-φ18
          16
          85
          40
          200
          145
          110
          85
          4-φ18
          16
          95
          50
          230
          160
          125
          100
          4-φ18
          16
          105
          65
          290
          180
          145
          120
          4-φ18
          18
          120
          80
          310
          195
          160
          135
          8-φ18
          20
          130
          100
          350
          215
          180
          155
          8-φ18
          20
          140
          125
          400
          245
          210
          185
          8-φ18
          22
          155
          150
          480
          280
          240
          210
          8-φ23
          24
          180
          200
          600
          335
          295
          265
          12-φ23
          26
          215

          H41W-25P(R)





          H44W-25P
          15
          130
          95
          65
          45
          4-φ14
          16
          77
          20
          150
          105
          75
          55
          4-φ14
          16
          77
          25
          160
          115
          85
          65
          4-φ14
          16
          80
          32
          180
          135
          100
          78
          4-φ18
          18
          85
          40
          200
          145
          110
          85
          4-φ18
          18
          95
          50
          230
          160
          125
          100
          4-φ18
          20
          105
          65
          290
          180
          145
          120
          8-φ18
          22
          120
          80
          310
          195
          160
          135
          8-φ18
          22
          130
          100
          350
          230
          190
          160
          8-φ23
          24
          140
          125
          400
          270
          220
          188
          8-φ25
          28
          155
          150
          480
          300
          250
          218
          8-φ25
          30
          180
          200
          600
          360
          310
          278
          12-φ30
          34
          215

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