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| Product Name：National standard globe valve |
| Product Classification：Globe valve |
| Product Introduction： |
National standard globe valve open and close the valve parts are cylindrical, leaving it flat or cone seal, the fluid along the centerline of the valve in a straight line. National standard valve only applies to fully open and fully closed, generally do not have to regulate the flow, while allowing for custom adjustment and throttle |
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| Description |
Parameters |
Size Chart |
Application |
|
息
1, the structure is simple, relatively easy to manufacture and repair
2, the working stroke is small, open and close a short time
3, sealing, and sealing surface between the friction force is small, longer life expectancy
4.Design specification: GB / T 12235
5.Structure Length: GB / T 12221
6.Flange connection: JB / T 79
7.Test and inspection: JB / T 9002
8.Product ID: GB / T 12220
9.Supply standard: JB / T 7928
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[Performance parameters]
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Model |
J41H-16C～160C |
J41Y-16C～160C |
J41W-16P～160P |
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Working pressure(MPa) |
1.6～16.0 |
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Suitable temperature(℃) |
≤425 |
≤150 |
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Suitable medium |
Water,steam,oil,ect |
Weak corrosive medium |
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Material |
Body,bonnet |
Carbon steel |
Chrome-nickel stainless titanium |
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Valve stem |
Chromium stainless steel |
Chrome-nickel stainless titanium |
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Sealing face |
Welding iron-based alloy |
Hard alloy welding |
Body Material |
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Filler |
Asbestos,graphite,flexible graphite,PTFE
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Main external and connecting dimensions
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2.5MPa |
DN |
L |
D |
D1 |
D2 |
b |
n-Φd |
H |
D0 |
|
|
10 |
130 |
90 |
60 |
40 |
16 |
4-Φ14 |
198 |
120 |
|
15 |
130 |
95 |
65 |
45 |
16 |
4-Φ14 |
218 |
120 |
|
20 |
150 |
105 |
75 |
55 |
16 |
4-Φ14 |
258 |
140 |
|
25 |
160 |
115 |
85 |
65 |
16 |
4-Φ14 |
275 |
140 |
|
32 |
180 |
135 |
100 |
78 |
18 |
4-Φ18 |
280 |
160 |
|
40 |
200 |
145 |
110 |
85 |
18 |
4-Φ18 |
330 |
180 |
|
50 |
230 |
160 |
125 |
100 |
20 |
4-Φ18 |
350 |
200 |
|
65 |
290 |
180 |
145 |
125 |
22 |
8-Φ18 |
400 |
280 |
|
80 |
310 |
195 |
160 |
135 |
22 |
8-Φ18 |
355 |
280 |
|
100 |
350 |
230 |
190 |
160 |
24 |
8-Φ23 |
415 |
320 |
|
125 |
400 |
270 |
220 |
188 |
28 |
8-Φ25 |
460 |
360 |
|
150 |
480 |
300 |
250 |
218 |
30 |
8-Φ25 |
510 |
450 |
|
200 |
600 |
360 |
310 |
278 |
34 |
12-Φ25 |
710 |
500 |
|
250 |
622 |
425 |
370 |
332 |
36 |
12-Φ30 |
786 |
550 |
|
300 |
698 |
485 |
430 |
390 |
40 |
16-Φ30 |
925 |
600 |
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产品外形及结构尺寸示意图
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| Working principal:The globe valve is plug-shaped pieces of the valve, seal leaving it flat or cone, the fluid along the centerline of the valve in a straight line. Stem form of exercise with lifting rod (stem lift, hand wheel is not lifting), but also lift rotating rod (with hand wheel and stem spin down, the nut in the valve body). Valve is only applicable to fully open and fully closed, does not allow for adjustment and throttle. Valve is forced closed valve, so the valve is closed, the valve must exert pressure to force the sealing surface does not leak. When the medium from the bottom of the valve into the valve, the operating force required to overcome the resistance, is the stem and packing friction and pressure from the media generated by the thrust force than the valve off the valve opening force, Therefore, the diameter of the stem to a large, otherwise the top stem bending failure occurs.
Note:1, the hand wheel, lever operated valves can be installed in any position in the pipeline.
2, hand wheels, handles and Wei moving body does not allow for lifting purposes.
3, the flow of media should be consistent with the direction of the arrow shown in the valve body. |
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