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闸阀是指关闭件（闸板）沿通路中心线的垂直方向移动的阀门。闸阀在管路中主要作切断用。
闸阀是使用很广的一种阀门，一般口径DN≥50mm的切断装置都选用它，有时口径很小的切断装置也选用闸阀，闸阀有以下优点： ①流体阻力小。
②开闭所需外力较小。 ③介质的流向不受限制。 ④全开时，密封面受工作介质的冲蚀比截止阀小。 ⑤体形比较简单，铸造工艺性较好。
公称压力：1.6-6.4MPa
适用温度范围：≤200℃～≤350℃
适用介质：硝酸类、醋酸类、水、油、气类及某些腐蚀性液体。
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零件名称
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ZG1Cr18Ni9Ti
304 CF8
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ZG00Cr18Ni10
304L CF3
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ZG1Cr18Ni12Mo2Ti
316 CF8M
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ZG00Cr17Ni14Mo2
316L CF3M
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阀体/阀盖
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0Cr18Ni9
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00Cr18Ni10
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0Cr18Ni9Mo2
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00Cr18Ni10Mo2
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闸板
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0Cr18Ni9
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00Cr18Ni10
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0Cr18Ni9Mo2
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00Cr18Ni10Mo2
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阀杆
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0Cr18Ni9
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00Cr18Ni10
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0Cr18Ni9Mo2
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00Cr18Ni10Mo2
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PTFE编织
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PTFE编织
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PTFE编织
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PTFE编织
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304＋PTFE
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304L＋PTFE
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316＋PTFE
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316L＋PTFE
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压盖
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0Cr18Ni9
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00Cr18Ni10
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0Cr18Ni9Mo2
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00Cr18Ni10Mo2
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螺栓
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不锈钢
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螺母
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不锈钢
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手轮
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球墨铸铁、铸钢
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主要连接尺寸 |
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型号
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公称通径
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尺寸（mm）
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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-f
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z-Φd
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H
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D0
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Z41W-1.6MPa
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15
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130
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95
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65
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45
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14-2
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4-14
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170
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120
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20
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150
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105
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75
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55
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14-2
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4-14
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200
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120
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25
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160
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115
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85
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65
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14-2
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4-14
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215
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140
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32
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180
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135
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100
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78
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16-2
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4-18
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260
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160
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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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16-3
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4-18
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290
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200
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50
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250
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160
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125
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100
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16-3
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4-18
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345
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220
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65
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265
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180
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145
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120
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18-3
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4-18
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360
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240
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80
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280
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195
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160
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135
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20-3
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8-18
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385
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280
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100
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300
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215
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180
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155
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20-3
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8-18
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430
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300
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125
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325
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245
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210
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185
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22-3
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8-18
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520
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320
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150
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350
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280
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240
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210
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24-3
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8-23
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610
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350
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200
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400
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335
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295
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265
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26-3
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12-23
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765
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400
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250
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450
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405
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355
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320
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30-3
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12-25
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895
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450
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300
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500
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460
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410
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375
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30-4
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12-25
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1145
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500
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350
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550
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520
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470
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435
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34-4
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16-25
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1200
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550
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400
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600
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580
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525
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485
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36-4
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16-30
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1400
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600
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450
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650
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640
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585
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545
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40-4
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20-30
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1500
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650
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500
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700
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705
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650
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608
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44-4
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20-34
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1630
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700
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600
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800
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840
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770
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718
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48-5
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20-41
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1830
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800
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型号
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公称通径
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尺寸（mm）
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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-f
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z-Φd
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H
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D0
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Z41W-2.5MPa
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15
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130
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95
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65
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45
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16-2
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4-14
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170
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120
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20
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150
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105
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75
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55
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16-2
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4-14
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200
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120
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25
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160
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115
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85
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65
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16-2
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4-14
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215
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140
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32
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180
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135
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100
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78
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18-2
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4-18
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260
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160
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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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18-3
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4-18
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290
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200
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50
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250
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160
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125
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100
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20-3
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4-18
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345
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220
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65
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265
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180
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145
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120
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22-3
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8-18
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360
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240
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80
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280
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195
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160
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135
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22-3
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8-18
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385
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280
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100
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300
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230
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190
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160
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24-3
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8-23
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430
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300
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125
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325
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270
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220
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188
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28-3
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8-25
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520
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320
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150
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350
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300
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250
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218
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30-3
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8-25
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610
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350
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200
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400
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360
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310
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278
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34-3
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12-25
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765
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400
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250
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450
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425
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370
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332
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36-3
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12-30
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900
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450
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300
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500
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485
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430
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390
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40-4
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16-30
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1130
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500
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350
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550
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550
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490
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448
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44-4
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16-34
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1250
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550
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400
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600
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610
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550
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505
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48-4
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16-34
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1430
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600
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450
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650
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660
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600
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555
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50-4
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20-34
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1520
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650
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500
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700
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730
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660
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610
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52-4
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20-41
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1650
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700
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600
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800
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840
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770
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718
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56-5
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20-41
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1850
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800
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型号
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公称通径
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尺寸（mm）
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L
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D
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D1
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D2
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D6
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b-f
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z-Φd
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H
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Z41W-4.0MPa
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15
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130
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95
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65
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45
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40
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16-2
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4-14
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170
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20
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150
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105
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75
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55
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51
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16-2
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4-14
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200
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25
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160
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115
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85
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65
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58
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16-2
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4-14
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215
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32
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180
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135
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100
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78
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66
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18-2
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4-18
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260
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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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76
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18-3
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4-18
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290
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50
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250
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160
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125
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100
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88
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20-3
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4-18
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345
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65
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280
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180
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145
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120
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110
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22-3
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8-18
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360
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|
80
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310
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195
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160
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135
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121
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22-3
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8-18
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385
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100
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350
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230
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190
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160
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150
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24-3
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8-23
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430
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125
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400
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270
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220
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188
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176
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28-3
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8-25
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530
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|
150
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450
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300
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250
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218
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204
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30-3
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8-25
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620
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200
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550
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375
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320
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282
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260
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38-3
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12-30
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780
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250
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650
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445
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385
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345
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313
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42-3
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12-34
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900
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Z41W-6.4MPa
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15
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170
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105
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75
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55
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41
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18-2
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4-14
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175
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20
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190
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125
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90
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68
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51
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20-2
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4-18
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200
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25
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210
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135
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100
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78
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58
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22-2
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4-18
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215
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32
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230
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150
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110
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82
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66
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24-2
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4-23
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270
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40
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240
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165
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125
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95
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76
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24-3
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4-23
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300
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|
50
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250
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175
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135
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105
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88
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26-3
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4-23
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370
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|
65
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280
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200
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160
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130
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110
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28-3
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8-23
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385
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|
80
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310
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210
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170
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140
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121
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30-3
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8-23
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400
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|
100
|
350
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250
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200
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168
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150
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32-3
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8-25
|
460
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|
125
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400
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295
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240
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202
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176
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36-3
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8-30
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570
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|
150
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450
|
340
|
280
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240
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204
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38-3
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8-34
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660
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|
200
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550
|
405
|
345
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300
|
260
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44-3
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12-34
|
820
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|
250
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650
|
470
|
400
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352
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313
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48-3
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12-41
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1000
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