截止閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運(yùn)動(dòng)。閥桿的運(yùn)動(dòng)形式，有升降桿式（閥桿升降，手輪不升降），也有升降旋轉(zhuǎn)桿式（手輪與閥桿一起旋轉(zhuǎn)升降，螺母設(shè)在閥體上）。截止閥只適用于全開和全關(guān)，不允許作調(diào)節(jié)和節(jié)流。
主要特點(diǎn)及用途
-
結(jié)構(gòu)緊湊、設(shè)計(jì)合理，閥門剛性好，通道流暢，流阻系數(shù)小。
-
密封面采用不銹鋼和硬質(zhì)合金，使用壽命長
-
采用柔性石墨填料、密封可靠、操作輕便靈活
-
驅(qū)動(dòng)方式分手動(dòng)、電動(dòng)、氣動(dòng)、齒輪傳功，結(jié)構(gòu)型式：彈性楔式單閘板、剛性楔式單閘板和雙閘板型式。
-
廣泛適用于石油化工，火力發(fā)電廠等油品、水蒸汽管路上作接通或截?cái)喙苈分薪橘|(zhì)的啟閉裝置。
主要性能規(guī)范
試驗(yàn)壓力
公稱壓力PN(MPa)
|
實(shí)驗(yàn)壓力(MPa)
|
|
殼體
|
密封(液)
|
密封(氣)
|
上密封
|
|
1.6
|
2.4
|
1.8
|
0.6
|
1.8
|
|
2.5
|
3.8
|
2.8
|
0.6
|
2.8
|
|
4.0
|
6.0
|
4.4
|
0.6
|
4.4
|
|
6.4
|
9.6
|
7.0
|
0.6
|
7.0
|
|
10.0
|
15.0
|
11.0
|
0.6
|
11.0
|
|
16.0
|
24.0
|
18.0
|
0.6
|
18.0
|
適用范圍
殼體材料
|
適用介質(zhì)
|
適用溫度(℃)
|
|
碳素鋼(C型)
|
水、蒸汽、油品
|
≤425
|
|
|
硝酸類
|
≤200
|
|
|
醋酸類
|
≤200
|
|
|
水、蒸汽、油品
|
≤550
|
主要零件材料
閥體、閥蓋
|
閥板、閥座
|
閥桿
|
閥桿螺母
|
填料
|
手輪
|
碳素鋼
|
優(yōu)質(zhì)碳鋼+硬質(zhì)合金或不銹鋼
|
鉻不銹鋼
|
鋁青銅
|
石墨石棉盤根
|
可鍛鑄鐵
|
鉻鎳鈦鋼
|
不銹鋼、不銹鋼+硬質(zhì)合金
|
鉻鎳鈦不銹鋼
|
鋁青銅
|
浸聚四氟乙
|
可鍛鑄鐵
|
鉻鎳鉬鈦鋼
|
不銹鋼、不銹鋼+硬質(zhì)合金
|
鉻鎳鉬鈦不銹鋼
|
鋁青銅
|
烯石棉盤根
|
可鍛鑄鐵
|
鉻鉬鋼
|
合金鋼+硬質(zhì)合金
|
鉻鉬鋁鋼
|
鋁青銅
|
柔性石墨
|
可鍛鑄鐵
|
主要尺寸及重量
公稱通徑
|
主要外形尺寸和連接尺寸(mm)
|
電動(dòng)裝置
|
重量
|
|
L
|
D
|
D1
|
D2
|
b
|
f
|
z-d
|
H
|
|
|
Z940H
|
-16C
|
Z940
|
Y-16P
|
Z940
|
Y-16R
|
Z940
|
W-16P
|
Z940
|
W-16R
|
Z940
|
Y-16I
|
|
|
Z941Y
|
Z941
|
Z941
|
Z941
|
Z941
|
Z941
|
|
|
40
|
200
|
145
|
110
|
85
|
16
|
3
|
4-18
|
595
|
DZW15
|
56
|
|
50
|
250
|
160
|
125
|
100
|
16
|
3
|
4-18
|
653
|
DZW20
|
59
|
|
65
|
265
|
180
|
145
|
120
|
18
|
3
|
4-18
|
665
|
DZW20
|
62
|
|
80
|
280
|
195
|
160
|
135
|
20
|
3
|
8-18
|
725
|
DZW20
|
74
|
|
100
|
300
|
215
|
180
|
155
|
20
|
3
|
8-18
|
787
|
DZW20
|
92
|
|
150
|
350
|
280
|
240
|
210
|
24
|
3
|
8-23
|
955
|
DZW30
|
161
|
|
200
|
400
|
335
|
295
|
265
|
26
|
3
|
12-23
|
1105
|
DZW30
|
219
|
|
250
|
450
|
405
|
355
|
320
|
30
|
3
|
12-25
|
1343
|
DZW45
|
376
|
|
300
|
500
|
460
|
410
|
375
|
30
|
4
|
12-25
|
1516
|
DZW60
|
484
|
|
350
|
550
|
520
|
470
|
435
|
34
|
4
|
16-25
|
1678
|
DZW60
|
695
|
|
400
|
600
|
580
|
525
|
485
|
36
|
4
|
16-30
|
1849
|
DZW90
|
977
|
|
450
|
650
|
640
|
585
|
545
|
40
|
4
|
20-30
|
1937
|
DZW90
|
1033
|
|
500
|
700
|
705
|
650
|
608
|
44
|
4
|
20-34
|
2234
|
DZW120
|
1087
|
|
600
|
800
|
840
|
770
|
718
|
48
|
5
|
20-41
|
2432
|
DZW180
|
1357
|
|
700
|
900
|
910
|
840
|
788
|
50
|
5
|
24-41
|
2489
|
DZW250
|
1481
|
|
800
|
1000
|
1020
|
950
|
898
|
52
|
5
|
24-41
|
2643
|
DZW350
|
1845
|
注:DN700、DN800的型號(hào)為Z942型NOTE:DN700、DN800type is Z942.主要尺寸及重量
公稱通徑
|
主要外形尺寸和連接尺寸(mm)
|
電動(dòng)裝置
|
重量(kg)
|
|
L
|
D
|
D1
|
D2
|
b
|
f
|
z-d
|
H
|
|
|
Z940H
|
-25C
|
Z940
|
Y-25P
|
Z940
|
Y-25R
|
Z940
|
W-25P
|
Z940
|
W-25R
|
Z940
|
Y-25I
|
|
|
Z941Y
|
Z941
|
Z941
|
Z941
|
Z941
|
Z941
|
|
|
40
|
200
|
145
|
110
|
85
|
18
|
3
|
4-18
|
595
|
DZW15
|
60
|
|
50
|
250
|
160
|
125
|
100
|
20
|
3
|
4-18
|
653
|
DZW20
|
64
|
|
65
|
265
|
180
|
145
|
120
|
22
|
3
|
8-18
|
665
|
DZW20
|
65
|
|
80
|
280
|
195
|
160
|
135
|
22
|
3
|
8-18
|
725
|
DZW20
|
79
|
|
100
|
300
|
230
|
190
|
160
|
24
|
3
|
8-23
|
787
|
DZW20
|
98
|
|
125
|
325
|
270
|
220
|
188
|
28
|
3
|
8-25
|
902
|
DZW30
|
154
|
|
150
|
350
|
300
|
250
|
218
|
30
|
3
|
8-25
|
955
|
DZW30
|
168
|
|
200
|
400
|
360
|
310
|
278
|
34
|
3
|
12-25
|
1105
|
DZW45
|
219
|
|
250
|
450
|
425
|
370
|
332
|
36
|
3
|
12-30
|
1343
|
DZW45
|
390
|
|
300
|
500
|
485
|
430
|
390
|
40
|
4
|
12-30
|
1516
|
DZW60
|
505
|
|
350
|
550
|
550
|
490
|
448
|
44
|
4
|
16-30
|
1678
|
DZW60
|
736
|
|
400
|
600
|
610
|
550
|
505
|
48
|
4
|
16-34
|
1849
|
DZW90
|
1027
|
|
450
|
650
|
660
|
600
|
555
|
50
|
4
|
16-34
|
1937
|
DZW90
|
1139
|
|
500
|
700
|
730
|
660
|
610
|
52
|
4
|
20-34
|
2234
|
DZW120
|
1228
|
|
600
|
800
|
840
|
770
|
718
|
56
|
5
|
20-41
|
2432
|
DZW180
|
1502
|
|
700
|
900
|
955
|
875
|
815
|
60
|
5
|
20-41
|
2489
|
DZW250
|
1617
|
|
800
|
1000
|
1070
|
990
|
930
|
64
|
5
|
24-48
|
2643
|
DZW350
|
1923
|
DN700、DN800的型號(hào)為Z942型 NOTE:DN700、DN800type is Z942.主要尺寸及重量Main dimensions and weight
公稱通徑
|
主要外形尺寸和連接尺寸(mm)
|
電動(dòng)裝置
|
重量(kg)
|
|
L
|
D
|
D1
|
D2
|
D6
|
b
|
z-d
|
f
|
f2
|
H
|
|
|
Z940H
|
-40
|
Z940
|
Y-40P
|
Z940
|
Y-40R
|
Z940
|
W-40P
|
Z940
|
W-40R
|
Z940
|
Y-40I
|
|
|
Z941Y
|
Z941
|
Z941
|
Z941
|
Z941
|
Z941
|
|
|
40
|
200
|
145
|
110
|
85
|
76
|
18
|
4-18
|
3
|
4
|
617
|
DZW15
|
46
|
|
50
|
250
|
160
|
125
|
100
|
88
|
20
|
4-18
|
3
|
4
|
665
|
DZW20
|
58
|
|
65
|
280
|
180
|
145
|
120
|
110
|
22
|
8-18
|
3
|
4
|
680
|
DZW20
|
68
|
|
80
|
310
|
195
|
160
|
135
|
121
|
22
|
8-18
|
3
|
4
|
752
|
DZW20
|
80
|
|
100
|
350
|
230
|
190
|
160
|
150
|
24
|
8-23
|
3
|
4.5
|
846
|
DZW30
|
108
|
|
150
|
450
|
300
|
250
|
218
|
204
|
30
|
8-25
|
3
|
4.5
|
1087
|
DZW45
|
258
|
|
200
|
550
|
375
|
320
|
282
|
260
|
38
|
12-30
|
3
|
4.5
|
1243
|
DZW45
|
366
|
|
250
|
650
|
445
|
385
|
345
|
313
|
42
|
12-34
|
3
|
4.5
|
1429
|
DZW60
|
472
|
|
300
|
750
|
510
|
450
|
408
|
364
|
46
|
16-34
|
4
|
4.5
|
1608
|
DZW90
|
673
|
|
350
|
850
|
570
|
510
|
465
|
422
|
52
|
16-34
|
4
|
5
|
1738
|
DZW90
|
804
|
|
400
|
950
|
655
|
585
|
535
|
474
|
58
|
16-41
|
4
|
5
|
1897
|
DZW120
|
1081
|
|
450
|
1050
|
680
|
610
|
560
|
524
|
60
|
20-41
|
4
|
5
|
2104
|
DZW180
|
1259
|
|
500
|
1150
|
755
|
670
|
612
|
576
|
62
|
20-48
|
4
|
5
|
2401
|
DZW180
|
1348
|
主要尺寸及重量
公稱通徑
|
主要外形尺寸和連接尺寸(mm)
|
電動(dòng)裝置
|
重量(kg)
|
|
L
|
D
|
D1
|
D2
|
D6
|
b
|
z-d
|
f
|
f2
|
H
|
|
|
Z940H
|
-64
|
Z940
|
Y-64P
|
Z940
|
Y-64R
|
Z940
|
W-64P
|
Z940
|
W-64R
|
Z940
|
Y-64I
|
|
|
Z941Y
|
Z941
|
Z941
|
Z941
|
Z941
|
Z941
|
|
|
50
|
250
|
175
|
135
|
105
|
88
|
26
|
4-23
|
3
|
4
|
667
|
DZW20
|
68
|
|
65
|
280
|
200
|
160
|
130
|
110
|
28
|
8-23
|
3
|
4
|
685
|
DZW20
|
72
|
|
80
|
310
|
210
|
170
|
140
|
121
|
30
|
8-23
|
3
|
4
|
748
|
DZW30
|
88
|
|
100
|
350
|
250
|
200
|
168
|
150
|
32
|
8-25
|
3
|
4.5
|
845
|
DZW30
|
117
|
|
150
|
450
|
340
|
280
|
240
|
204
|
88
|
8-34
|
3
|
4.5
|
1009
|
DZW45
|
314
|
|
200
|
550
|
405
|
345
|
300
|
260
|
44
|
12-34
|
3
|
4.5
|
1253
|
DZW60
|
432
|
|
250
|
650
|
470
|
400
|
345
|
313
|
48
|
12-41
|
3
|
4.5
|
1449
|
DZW60
|
595
|
|
300
|
750
|
530
|
460
|
412
|
361
|
54
|
16-41
|
4
|
4.5
|
1867
|
DZW90
|
721
|
|
350
|
850
|
595
|
525
|
475
|
422
|
60
|
16-41
|
4
|
5
|
1931
|
DZW120
|
863
|
|
400
|
950
|
670
|
585
|
525
|
474
|
66
|
16-48
|
4
|
5
|
2017
|
DZW180
|
1129
|
|
500
|
1150
|
800
|
705
|
640
|
576
|
70
|
20-54
|
4
|
5
|
2459
|
DZW 250
|
1493
|
|
|
Z940H
|
-100
|
Z940
|
Y-100P
|
Z940
|
Y-100R
|
Z940
|
W-100P
|
Z940
|
W-100R
|
Z940
|
Y-100I
|
|
|
Z941Y
|
Z941
|
Z941
|
Z941
|
Z941
|
Z941
|
|
|
50
|
250
|
195
|
145
|
112
|
88
|
28
|
4-25
|
3
|
4
|
781
|
DZW20
|
78
|
|
65
|
280
|
220
|
170
|
138
|
110
|
32
|
8-25
|
3
|
4
|
830
|
DZW20
|
96
|
|
80
|
310
|
230
|
180
|
148
|
121
|
34
|
8-25
|
3
|
4
|
865
|
DZW30
|
126
|
|
100
|
350
|
265
|
210
|
172
|
150
|
38
|
8-30
|
3
|
4.5
|
1179
|
DZW30
|
134
|
|
150
|
450
|
350
|
290
|
250
|
204
|
46
|
12-34
|
3
|
4.5
|
1201
|
DZW60
|
352
|
|
200
|
550
|
430
|
360
|
312
|
260
|
54
|
12-41
|
3
|
4.5
|
1611
|
DZW60
|
484
|
|
250
|
650
|
500
|
430
|
382
|
313
|
60
|
12-41
|
3
|
4.5
|
1903
|
DZW90
|
608
|
|
300
|
750
|
585
|
500
|
442
|
364
|
70
|
16-48
|
4
|
4.5
|
2054
|
DZW120
|
757
|
|
350
|
850
|
655
|
560
|
498
|
422
|
76
|
16-54
|
4
|
5
|
2132
|
DZW180
|
994
|
|
400
|
950
|
715
|
620
|
558
|
474
|
80
|
16-54
|
4
|
5
|
2321
|
DZW 250
|
1269
|
|
|
Z940H
|
-160
|
Z940
|
Y-160P
|
Z940
|
Y-160R
|
Z940
|
W-160P
|
Z940
|
W-160R
|
Z940
|
Y-160I
|
|
|
Z941Y
|
Z941
|
Z941
|
Z941
|
Z941
|
Z941
|
|
|
50
|
300
|
215
|
165
|
132
|
88
|
36
|
8-25
|
3
|
4
|
905
|
DZW20
|
101
|
|
65
|
340
|
245
|
190
|
152
|
110
|
44
|
8-30
|
3
|
4
|
968
|
DZW20
|
137
|
|
80
|
390
|
260
|
205
|
168
|
121
|
46
|
8-30
|
3
|
4
|
978
|
DZW30
|
167
|
|
100
|
450
|
300
|
240
|
200
|
150
|
48
|
8-34
|
3
|
4.5
|
1043
|
DZW30
|
211
|
|
125
|
525
|
355
|
285
|
238
|
176
|
60
|
8-41
|
3
|
4.5
|
1248
|
DZW60
|
424
|
|
150
|
600
|
390
|
318
|
270
|
204
|
66
|
12-41
|
3
|
4.5
|
1394
|
DZW90
|
588
|
|
200
|
750
|
480
|
400
|
345
|
250
|
78
|
12-48
|
3
|
4.5
|
1621
|
DZW120
|
839
|