Swing check valve
- name: Swing check valve
- Type: H44H
- Presure: PN1.6~PN10MPa
- Specifications: DN50~DN500
- material: Carbon steel, stainless steel, chrome molybdenum steel
Product description
Swing check valve, also known as a one-way valve or check valve, its role is to prevent the media back in the pipeline. Opening and closing pieces by medium flow and power to open or close, in order to prevent the media back valve is called the check valve. Check valves are automatic valves, mainly for the medium one-way flow of the pipeline, only to allow the media to flow in one direction, in order to prevent the occurrence of accidents. This type of valve in the pipeline should generally be installed horizontally. Can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea and other media. Mainly used in petroleum, chemical, pharmaceutical, fertilizer, power and other pipelines.
Main connection and dimensions(PN25)
nominal diameter
Main connection and dimensions
Body connecting dimensions
flange connecting dimensions
L
H
D
D1
D2
b
f
Z-Φd
50
230
160
160
125
100
20
3
4-18
65
290
175
180
145
120
22
3
8-18
80
310
185
195
160
135
22
3
8-18
100
350
220
230
190
160
24
3
8-23
125
400
248
270
220
188
28
3
8-25
150
480
276
300
250
218
30
3
8-25
200
550
350
360
310
278
34
3
12-25
250
650
410
425
370
332
36
3
12-30
300
750
430
485
430
390
40
4
16-30
350
850
518
550
490
448
44
4
16-34
400
950
560
610
550
505
48
4
16-34
500
1150
618
730
660
610
52
4
20-41
main connecting and dimensions(PN40)
nominal diameter
main connecting and dimensions
valve connection size
flange connnection size
L
H
D
D1
D2
D6
b
f
f2
Z-Φd
50
230
169
160
125
100
88
20
3
4
4-18
65
290
173
180
145
120
110
22
3
4
8-18
80
310
185
195
160
135
121
22
3
4
8-18
100
350
220
230
190
160
150
24
3
4.5
8-23
125
400
248
270
220
188
176
28
3
4.5
8-25
150
480
270
300
250
218
204
30
3
4.5
8-25
200
550
342
375
320
282
260
38
3
4.5
12-30
250
650
401
445
385
345
313
42
3
4.5
12-34
300
750
423
510
450
408
364
46
4
4.5
16-34
350
850
455
570
510
465
422
52
4
5
16-34
400
950
510
655
585
535
474
58
4
5
16-41
main connection and outside size(PN64)
nominal diameter
main connection and outside size
body connection size
flange connnection size
L
H
D
D1
D2
D6
b
f
f2
Z-Φd
50
300
177
175
135
105
88
26
3
4
4-23
65
340
197
200
160
130
110
28
3
4
8-23
80
380
212
210
170
140
121
30
3
4
8-23
100
430
248
250
200
168
150
32
3
4.5
8-25
125
500
296
295
240
202
176
36
3
4.5
8-30
150
550
330
340
280
240
204
38
3
4.5
8-34
200
650
385
405
345
300
260
44
3
4.5
12-34
250
775
445
470
400
352
313
48
3
4.5
12-41
300
900
474
530
460
412
364
54
4
4.5
16-41
350
1025
514
595
525
475
422
66
4
5
16-41
400
1150
616
670
585
525
474
36
4
5
16-48
main connection and outside size(PN100)
nominal diameter
main connection and outside size
valve body connection size
flange connection size
L
H
D
D1
D2
D6
b
f
f2
Z-Φd
50
300
210
195
145
112
88
28
3
4
4-Φ25
65
340
227
220
170
138
110
32
3
4
8-Φ25
80
380
235
230
180
148
121
34
3
4
8-Φ25
100
430
274
265
210
172
150
38
3
4
8-Φ30
150
550
340
350
290
250
204
46
3
4.5
12-Φ34
200
650
374
430
360
312
260
54
3
4.5
12-Φ41
250
775
440
500
430
382
313
60
3
4.5
12-Φ41
300
900
505
585
500
442
364
70
4
4.5
16-Φ48
Main Parts Material
Material CODE
Valve body, valve cover
valve clack Swing arm
shim
C
WCB carbon steel
WCB+hard alloy or stainless steel
WCB carbon steel
graphite+304
P
CF8(304) stainless steel
stainless steel
CF8(304) stainless steel
PTFE
R
CF8M(316)stainless steel
stainless steel
CF8M(316)stainless steel
PTFE
I
WC6 Cr Mo steel
Alloy steel + hard alloy
WC6 Cr Mo steel
graphite+304
V
WC9 Cr Mo steel
Alloy steel + hard alloy
WC9 Cr Mo steel
graphite+304
Other special materials, our company can also be tailored to customer needs.
Material CODE
Valve body, valve cover
valve clack
Swing arm
shim
C
WCB carbon steel
WCB+hard alloy or stainless steel
WCB carbon steel
graphite+304
P
CF8(304) stainless steel
stainless steel
CF8(304) stainless steel
PTFE
R
CF8M(316) stainless steel
stainless steel
CF8M(316) stainless steel
PTFE
I
WC6 Cr Mo steel
Alloy steel + hard alloy
WC6 Cr Mo steel
graphite+304
V
WC9 Cr Mo steel
vAlloy steel + hard alloy WC9 Cr Mo steel
graphite+304
Other special materials, our company can also be tailored to customer needs.
shell material
Applicable medium
Applicable temperature（℃）
carbon steel（C type）
Water, steam, oil
≤425
Ci Ni Ti（P type）
Nitric acid
≤150
Ci Ni Mo Ti Steel（R type）
Acetic acid
≤150
Cr Mo steel（I type）
Water, steam, oil
≤550
Nominal pressure PN（MPa）
housing（MPa）
Test pressure（MPa）
Seal (liquid)（MPa）
Seal (gas)（MPa）
1.6
2.4
1.8
0.6
2.5
3.8
2.8
0.6
4
6
4.4
0.6
6.4
9.6
7
0.6
10
15
11
0.6
- Implementation standards:
Design standard: GB/T12236
Structure length: GB/T12221
Connecting flange: JB/T79, GB/T9113, HG/T20592, HG/T20615
Experiment and test: JB/T9092, GB/T13927
Pressure - temperature: GB/T9131
Product label: GB/T12220
- Storage and maintenance
1 the valve must be kept in a dry, ventilated room.
2 the storage period of the valve, the valve should be closed and fixed, both ends of the flange should be closed.
3 during the storage of the valve, the surface of the machine is easy to be removed.
4 long-term storage of the valve should be regularly checked, timely protection.
Installation and maintenance
1 the installation position of the valve is not limited, usually installed in horizontal pipeline, can also be installed in the vertical pipe or inclined pipeline, but it is convenient for maintenance.
2 must be carefully checked before installation, the valve plate is marked and consistent with the requirement and condition.
3 when installing, should check the inner cavity, remove the valve flap fixing device, try to check the sealing surface of the valve flap, and clean.
4.. Lifting the valve before, should check whether it has been tightening screw ring.
5 installation should pay special attention to media flow, should make the normal flow direction and the direction of the arrow on the valve body on the direction of the arrow is consistent, otherwise it will cut off the normal flow of the media.
6 when installing, tighten the connecting bolts evenly and symmetrically.
