Design and manufacturing: GB/T 12237
The structural length:GB/T 12221
Connection forms:JB / T 79.1
Inspection and test:GB / T 26480
Caliber: 1/2″ ~ 48″ (DN15 ~ DN1200)
Pressure temporature level:GB / T 9131
Drive mode:Worm Gear
Pressure: PN1.6 MPa ~ PN42.0 MPa Class 150 ~ Class 2500
Operating Mechanism (Drive Mode):
Worm Gear Operated
Materials
• Body: Carbon Steel
• Ball: Stainless Steel (304, 316)
• Seals: PTFE, RPTFE, Metal-to-Metal (for high temperature applications)
• Stem: Stainless Steel
Certifications
• Compliance: API 6D, ISO 9001, CE, PED, and other international standards.
• Full Bore Design: Minimizes pressure drop and turbulence.
• Welded Body: Eliminates the risk of leakage from bolted connections.
• Buried Applications: Specially designed for direct burial with long service life.
• Maintenance-Free: With no need for regular servicing in buried or hard-to-access areas.
• Temperature Range:
o -29°C ~ 180°C depending on materials and seals.
• Corrosion Resistance: High-quality materials suitable for gas and corrosive environments.
• Fire-Safe Design: Available as per API 607, ISO 10497.
Design and Manufacturing Standards: API 6D, GB/T 12237
Structural Length Standard: GB/T 12221
Connection Forms Standards:
Flanged Connections:JB / T 79.1
Threaded Connections: NPT, BSP, per ISO 7-1
Welded Connections: ASME B16.25
Inspection and Test Standards: GB / T 26480
Available Sizes (Caliber)
• Range:1/2″ ~ 48″ (DN15 ~ DN1200)
Pressure-Temperature Rating
GB / T 9131
• Pressure Range:
:PN1.6 MPa ~ PN26 MPa
Class 150 ~ Class 2500
|
Nominal pressure PN (MPa)
|
case
|
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
|
6.0
|
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
|
|
Shell material
|
Applicable medium
|
Applicable temperature (℃)
|
|
Carbon steel (C type)
|
Water, steam, oil
|
≤425
|
|
Chromium nickel titanium steel (P type)
|
Nitric acid
|
≤200
|
|
Chromium nickel molybdenum titanium steel (R type)
|
Acetic acid
|
≤200
|
|
Chrome Molybdenum Steel (Type I)
|
Water, steam, oil
|
≤550
|
|
Valve body, bonnet
|
Valve plate, valve seat
|
Stem
|
Stem nut
|
filler
|
Handwheel
|
|
Carbon steel
|
High quality carbon steel + hard alloy or stainless steel
|
Chrome stainless steel
|
Aluminum bronze
|
Graphite asbestos packing
|
Malleable cast iron
|
|
Chromium nickel titanium steel
|
Stainless steel, stainless steel + hard alloy
|
Chrome nickel titanium stainless steel
|
Aluminum bronze
|
Polytetrafluoroethylene
|
Malleable cast iron
|
|
Chromium nickel molybdenum titanium steel
|
Stainless steel, stainless steel + hard alloy
|
Chrome nickel titanium stainless steel
|
Aluminum bronze
|
Polytetrafluoroethylene
|
Malleable cast iron
|
|
Chrome-molybdenum steel
|
Alloy steel + hard alloy
|
Chrome-molybdenum steel
|
Aluminum bronze
|
Flexible asbestos
|
Malleable cast iron
|
|
Nominal diameter
|
Main external dimensions and connection dimensions
|
|||||||
|
L
|
D
|
D1
|
D2
|
b
|
Z-d
|
H
|
D0
|
|
|
Z41H-16C
|
||||||||
|
15
|
130
|
95
|
65
|
45
|
14-2
|
4-Φ14
|
170
|
120
|
|
20
|
150
|
105
|
75
|
55
|
14-2
|
4-Φ14
|
190
|
140
|
|
25
|
160
|
115
|
85
|
65
|
14-2
|
4-Φ14
|
205
|
160
|
|
32
|
180
|
135
|
100
|
78
|
16-2
|
4-Φ18
|
270
|
180
|
|
40
|
200
|
145
|
110
|
85
|
16-3
|
4-Φ18
|
310
|
200
|
|
50
|
250
|
160
|
125
|
100
|
16-3
|
4-Φ18
|
358
|
240
|
|
65
|
265
|
180
|
145
|
120
|
18-3
|
4-Φ18
|
373
|
240
|
|
80
|
280
|
195
|
160
|
135
|
20-3
|
8-Φ18
|
435
|
280
|
|
100
|
300
|
215
|
180
|
155
|
20-3
|
8-Φ18
|
500
|
300
|
|
125
|
325
|
245
|
210
|
185
|
22-3
|
8-Φ18
|
614
|
320
|
|
150
|
350
|
280
|
240
|
210
|
24-3
|
8-Φ23
|
674
|
360
|
|
200
|
400
|
335
|
295
|
265
|
26-3
|
12-Φ23
|
811
|
400
|
|
250
|
450
|
405
|
355
|
320
|
30-3
|
12-Φ25
|
969
|
450
|
|
300
|
500
|
460
|
410
|
375
|
30-3
|
12-Φ25
|
1145
|
580
|
|
350
|
550
|
520
|
470
|
435
|
34-4
|
16-Φ25
|
1280
|
640
|
|
400
|
600
|
580
|
525
|
485
|
36-4
|
16-Φ30
|
1452
|
640
|
|
Z41H-25
|
||||||||
|
15
|
130
|
95
|
65
|
45
|
16-2
|
4-Φ14
|
170
|
120
|
|
20
|
150
|
105
|
75
|
55
|
16-2
|
4-Φ14
|
190
|
140
|
|
25
|
160
|
115
|
85
|
65
|
16-2
|
4-Φ14
|
205
|
160
|
|
32
|
180
|
135
|
100
|
78
|
18-2
|
4-Φ18
|
270
|
180
|
|
40
|
200
|
145
|
110
|
85
|
18-3
|
4-Φ18
|
310
|
200
|
|
50
|
250
|
160
|
125
|
100
|
20-3
|
4-Φ18
|
358
|
240
|
|
65
|
265
|
180
|
145
|
120
|
22-3
|
8-Φ18
|
373
|
240
|
|
80
|
280
|
195
|
160
|
135
|
22-3
|
8-Φ18
|
435
|
280
|
|
100
|
300
|
230
|
190
|
160
|
24-3
|
8-Φ23
|
500
|
300
|
|
125
|
325
|
270
|
220
|
188
|
28-3
|
8-Φ25
|
614
|
320
|
|
150
|
350
|
300
|
250
|
218
|
30-3
|
8-Φ25
|
674
|
360
|
|
200
|
400
|
360
|
310
|
278
|
34-3
|
12-Φ25
|
811
|
400
|
|
250
|
450
|
425
|
370
|
332
|
36-3
|
12-Φ30
|
969
|
450
|
|
300
|
500
|
485
|
430
|
390
|
40-4
|
16-Φ30
|
1145
|
580
|
|
350
|
550
|
550
|
490
|
448
|
44-4
|
16-Φ34
|
1280
|
640
|
|
400
|
600
|
610
|
550
|
505
|
48-4
|
16-Φ34
|
1452
|
640
|
Applications:
o Oil and Gas Pipelines
o Natural Gas Transmission
o City Gas Distribution
o Petrochemical Industry
o Heat Supply Systems
o Water Systems (including buried installations)
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