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Swing check valve
Swing check valve, also called non-return valve or cut-off valve, is used to prevent medium in tubes form reversely flowing. The opening and closing parts can be automatically opened or closed by the flowing or the force of medium to prevent from reversely flowing, as a result, it is widely applied to fields such as chemical engineering, metallurgy and pharmacy.
1.Its fluid resistance is smaller than that of lift check valve, thus the swing check valve is more applicable to situation of larger diameter with non-limited installation space, and it is always installed on horizontal tubes.
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公称通径DN(mm)
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50～500
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公称压力PN(MPa)
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1.0～2.5
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公称压力Ps(MPa)
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强度试验
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1.5～3.75
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密封试验
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1.1～2.75
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主要 零件
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阀体
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WCB、CF8、CF8M、CF3M
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阀板
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WCB、CF8、CF8M、CF3M等
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密封圈
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硬质合金
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连接形式
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法兰式
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规格
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连接尺寸
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||||||
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L
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D
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D1
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D2
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b
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n-Φd
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H
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|
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40
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200
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145
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110
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85
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19
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4--18
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140
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50
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230
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165
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125
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100
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20
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4--18
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148
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65
|
290
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180
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145
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120
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20
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4--18
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160
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80
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310
|
195
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160
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135
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22
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8--18
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172
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100
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350
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215
|
180
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155
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22
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8--18
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178
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125
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400
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245
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210
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185
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24
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8--18
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250
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150
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480
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280
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240
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210
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24
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8--23
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255
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|
200
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550
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335
|
295
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265
|
26
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12--23
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295
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250
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650
|
405
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355
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320
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26
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12--25
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442
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300
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750
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460
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410
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375
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30
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12--25
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450
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350
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850
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520
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470
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435
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34
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16--25
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540
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400
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950
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580
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525
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485
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36
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16--30
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555
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|
500
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1150
|
705
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650
|
608
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44
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20--34
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650
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Swing check valve
Swing check valve, also called non-return valve or cut-off valve, is used to prevent medium in tubes form reversely flowing. The opening and closing parts can be automatically opened or closed by the flowing or the force of medium to prevent from reversel
