Welding gate valves
- name: Welding gate valves
- Type: Z61
- Presure: PN1.6~PN10.0MPa
- Specifications: DN50~DN800
- material: Carbon steel, chrome molybdenum steel, stainless steel
The product description
Welding connection of valve is suitable for the nominal pressure PN16.0 32.0 Mpa, the working temperature of 540 ℃ or less oil, chemical industry, hydropower and thermal power plant all kinds of the pipeline system, cut off or connect pipe medium. Applicable medium such as water, oil, acid medium. Operation manual and gear drive, electric, etc.
The main connection and overall dimensions
Nominal diameter
L
a
H
PN1.6(MPa)
PN2.5(MPa)
D1
D2
Denso device
D1
D2
Denso device
50
250
37°30′
620
58
50
DZW10
64
49
ZB10
65
270
37°30′
714
75
65
DZW10
82
67
ZB10
80
280
37°30′
765
91
79
DZW10
95
77
ZB10
100
300
37°30′
840
110
97
DZW15
117
101
ZB15
125
325
37°30′
852
136
121
DZW15
144
126
ZB20
150
350
37°30′
875
163
146
DZW20I
172
158
ZB20
200
400
37°30′
1015
223
202
DZW20
223
202
ZB25
250
450
37°30′
1125
278
254
DZW30
278
254
ZB25
300
500
37°30′
1371
330
305
DZW45
330
305
ZC45
350
550
37°30′
1485
382
352
DZW60
382
352
ZC60
400
600
37°30′
1890
432
399
DZW60
432
399
ZC90
450
650
37°30′
1989
485
451
DZW90
485
451
ZC120
500
700
37°30′
2041
535
501
DZW120
535
499
ZC120
600
800
37°30′
2285
636
601
DZW180
636
599
ZC180
700
900
37°30′
2347
726
691
DZW250
726
689
ZC250
800
1000
37°30′
2593
826
791
DZW350
826
789
ZC350
The main connection and overall dimensions
Nominal diameter
L
D
a
PN4.0(MPa)
PN6.4MPa)
PN10.0(MPa)
D1
H
Electric actuator
D1
H
Electric actuator
D1
H
Electric actuator
50
280
64
37°30′
49
620
DZW10
50
622
DZW10
49
622
ZB10
65
310
83
37°30′
67
714
DZW10
66
718
DZW15
64
718
ZB15
80
350
96
37°30′
79
767
DZW15
77
770
DZW20I
75
770
ZB20
100
400
117
37°30′
101
845
DZW20I
99
845
DZW20I
97
845
ZB25
125
450
144
37°30′
126
852
DZW20I
129
852
DZW30
125
852
ZB25
150
550
172
37°30′
152
875
DZW30
150
875
DZW30
145
965
ZC45
200
650
223
37°30′
200
1015
DZW30
198
1105
DZW45
190
1105
ZC60
250
750
278
37°30′
252
1215
DZW45
246
1215
DZW60
236
1237
ZC90
300
850
330
37°30′
302
1371
DZW60
294
1424
DZW90I
282
1424
ZC120
350
950
382
37°30′
350
1507
DZW90I
342
1507
DZW120I
334
1670
ZC180
400
1050
432
37°30′
397
1912
DZW120
387
2075
DZW180
377
2075
ZC250
Note: PN1.6 (16) valve allows as PN1.0 (10) pressure level to choose.
The main connection and overall dimensions
Nominal diameter
L
a
H
PN1.6(MPa)
PN2.5(MPa)
D1
D2
Denso device
D1
D2
Denso device
50
250
37°30′
620
58
50
DZW10
64
49
ZB10
65
270
37°30′
714
75
65
DZW10
82
67
ZB10
80
280
37°30′
765
91
79
DZW10
95
77
ZB10
100
300
37°30′
840
110
97
DZW15
117
101
ZB15
125
325
37°30′
852
136
121
DZW15
144
126
ZB20
150
350
37°30′
875
163
146
DZW20I
172
158
ZB20
200
400
37°30′
1015
223
202
DZW20
223
202
ZB25
250
450
37°30′
1125
278
254
DZW30
278
254
ZB25
300
500
37°30′
1371
330
305
DZW45
330
305
ZC45
350
550
37°30′
1485
382
352
DZW60
382
352
ZC60
400
600
37°30′
1890
432
399
DZW60
432
399
ZC90
450
650
37°30′
1989
485
451
DZW90
485
451
ZC120
500
700
37°30′
2041
535
501
DZW120
535
499
ZC120
600
800
37°30′
2285
636
601
DZW180
636
599
ZC180
700
900
37°30′
2347
726
691
DZW250
726
689
ZC250
800
1000
37°30′
2593
826
791
DZW350
826
789
ZC350
The main connection and overall dimensions
nominal
size
L
D
a
PN4.0(MPa)
PN6.4MPa)
PN10.0(MPa)
D1
H
Electric actuator
D1
H
Electric actuator
D1
H
Electric actuator
50
280
64
37°30′
49
620
DZW10
50
622
DZW10
49
622
ZB10
65
310
83
37°30′
67
714
DZW10
66
718
DZW15
64
718
ZB15
80
350
96
37°30′
79
767
DZW15
77
770
DZW20I
75
770
ZB20
100
400
117
37°30′
101
845
DZW20I
99
845
DZW20I
97
845
ZB25
125
450
144
37°30′
126
852
DZW20I
129
852
DZW30
125
852
ZB25
150
550
172
37°30′
152
875
DZW30
150
875
DZW30
145
965
ZC45
200
650
223
37°30′
200
1015
DZW30
198
1105
DZW45
190
1105
ZC60
250
750
278
37°30′
252
1215
DZW45
246
1215
DZW60
236
1237
ZC90
300
850
330
37°30′
302
1371
DZW60
294
1424
DZW90I
282
1424
ZC120
350
950
382
37°30′
350
1507
DZW90I
342
1507
DZW120I
334
1670
ZC180
400
1050
432
37°30′
397
1912
DZW120
387
2075
DZW180
377
2075
ZC250
Note: PN1.6 (16) valve allows as PN1.0 (10) pressure level to choose.
The major parts material
Material code
valve body
valve plate The piston
The valve stem
Four open loop
packing
Stem nut
C
WCB Carbon steel
WCB
A105
20Cr13
A105
graphite
ZQAL9-4
I
WC6 Chrome molybdenum steel
WC6
F11
38CrMoAL
F11
graphite
ZQAL9-4
V
WC9 Chrome molybdenum steel
WC9
F22
25Cr2MoVA
F22
graphite
ZQAL9-4
Other special material our company can also be customized according to customer's requirements.
The performance specification
Shell material
Applicable medium
Applicable temperature（℃）
Carbon steel（C type）
Water, steam, oil
≤425
Chrome molybdenum steel（I、V type）
Water, steam, oil
≤550
Nominal pressure PN（MPa）
shell
Test pressure（MPa）
upper seal
Seal (liquid)
Seal (gas)
1.6
2.4
1.8
0.6
1.8
2.5
3.8
2.8
0.6
2.8
4.0
6
4.4
0.6
4.4
6.4
9.6
7
0.6
7
10
15
11
0.6
11
Execution standard:
Design criteria: JB/T3595
Structure length: GB/T12221
Groove size: JB/T3595
Experiment and test: GB/T13927
Pressure and temperature: GB/T9131 JB/T3595
Product labeling: GB/T12220
Storage maintenance
Valve can be stored in any masking area, but must pay attention to prevent valves are dirty mud or foundation. In at the time of shipment, the valve inlet and outlet are with protection cover. Note before installing the valve, don't to remove the protection cover. Ready to install the valve, the first will protect the end cover, and then check whether connection parts clean. For welding the parts need to clean them with a suitable solution, such as acetone or alcohol. Don't use contain fluoride and chloride solution.
Installation and maintenance
1. Before installation, must carefully check whether mark and nameplate of valve is consistent with working condition requirements.
(2) hand wheel, lever operation of pipe cut-off valve can be installed in any position.
3. The handwheel, handle and wei mechanism, does not allow for lifting.
4. The flow of medium should be consistent with the direction arrow shown in the body.
