国标H74型对夹式止回阀
详细介绍
H74型对夹式止回阀 H74 Wafer-type check valve
H74对夹双瓣旋启式止回阀主要尺寸及重量
|
公称压力
PN(MPa)
|
公称通径
DN(mm)
|
尺寸(mm)
|
配管法兰（供参考）
|
|
L
|
D
|
D1
|
螺栓孔中心圆直径D1
|
螺栓数量
|
螺栓直径D
|
|
1.0
|
50
|
14.5
|
109
|
25
|
125
|
4
|
M16
|
|
60
|
14.5
|
129
|
38
|
145
|
4
|
M16
|
|
80
|
14.5
|
144
|
46
|
160
|
8
|
M16
|
|
100
|
14.5
|
164
|
71.5
|
180
|
8
|
M16
|
|
125
|
16
|
194
|
95
|
210
|
8
|
M16
|
|
150
|
19
|
221
|
114
|
240
|
8
|
M20
|
|
200
|
29
|
275
|
140
|
295
|
8
|
M20
|
|
250
|
29
|
330
|
188
|
350
|
12
|
M20
|
|
300
|
38
|
380
|
216
|
400
|
12
|
M20
|
|
350
|
41
|
440
|
263
|
460
|
16
|
M20
|
|
400
|
51
|
492
|
305
|
515
|
16
|
M24
|
|
450
|
51
|
541
|
356
|
565
|
20
|
M24
|
|
500
|
65
|
596
|
406
|
620
|
20
|
M24
|
|
600
|
70
|
698
|
482
|
725
|
20
|
M27
|
|
1.6
|
50
|
14.5
|
109
|
25
|
125
|
4
|
M16
|
|
60
|
14.5
|
129
|
38
|
145
|
4
|
M16
|
|
80
|
14.5
|
144
|
46
|
160
|
8
|
M16
|
|
100
|
14.5
|
164
|
71.5
|
180
|
8
|
M16
|
|
125
|
16
|
194
|
95
|
210
|
8
|
M16
|
|
150
|
19
|
221
|
114
|
240
|
8
|
M20
|
|
200
|
29
|
275
|
140
|
295
|
8
|
M20
|
|
250
|
29
|
331
|
188
|
355
|
12
|
M24
|
|
300
|
38
|
386
|
216
|
410
|
12
|
M24
|
|
350
|
41
|
446
|
263
|
470
|
16
|
M24
|
|
400
|
51
|
498
|
305
|
525
|
16
|
M27
|
|
450
|
51
|
558
|
356
|
585
|
20
|
M27
|
|
500
|
65
|
620
|
406
|
650
|
20
|
M30
|
|
600
|
70
|
737
|
482
|
770
|
20
|
M33
|
|
2.5
|
50
|
14.5
|
109
|
25
|
125
|
4
|
M16
|
|
60
|
14.5
|
129
|
38
|
145
|
4
|
M16
|
|
80
|
14.5
|
144
|
46
|
160
|
8
|
M16
|
|
100
|
14.5
|
170
|
71.5
|
190
|
8
|
M20
|
|
125
|
16
|
196
|
95
|
220
|
8
|
M24
|
|
150
|
19
|
226
|
114
|
250
|
8
|
M24
|
|
200
|
29
|
286
|
140
|
310
|
8
|
M24
|
|
250
|
29
|
343
|
188
|
370
|
12
|
M27
|
|
300
|
38
|
403
|
216
|
430
|
12
|
M27
|
|
350
|
41
|
460
|
263
|
490
|
16
|
M30
|
|
400
|
51
|
517
|
305
|
550
|
16
|
M33
|
|
450
|
51
|
567
|
356
|
600
|
20
|
M33
|
|
500
|
65
|
627
|
406
|
660
|
20
|
M33
|
|
600
|
70
|
737
|
482
|
770
|
20
|
M36
|
|
4.0
|
50
|
14.5
|
109
|
51
|
125
|
4
|
M16
|
|
60
|
14.5
|
129
|
65
|
145
|
4
|
M16
|
|
80
|
14.5
|
144
|
80
|
160
|
8
|
M16
|
|
100
|
14.5
|
170
|
105
|
190
|
8
|
M20
|
|
125
|
16
|
196
|
127
|
220
|
8
|
M24
|
|
150
|
19
|
226
|
152
|
250
|
8
|
M24
|
|
200
|
29
|
293
|
203
|
320
|
8
|
M27
|
|
250
|
29
|
355
|
254
|
385
|
12
|
M30
|
|
300
|
38
|
420
|
305
|
405
|
12
|
M30
|
|
350
|
41
|
477
|
350
|
510
|
16
|
M33
|
|
400
|
51
|
549
|
400
|
585
|
16
|
M36
|
|
450
|
51
|
574
|
450
|
610
|
20
|
M36
|
|
500
|
65
|
631
|
500
|
670
|
20
|
M39
|
|
600
|
70
|
750
|
600
|
795
|
20
|
M45
|
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