Flange Right Angle Globe Valve
Flange Right Angle Globe Valve
[Overview of Low Pressure Angle Globe Valve]
The low-pressure angle stop valve is a forced sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of the valve must be large, otherwise the valve stem will bend.
|
parts |
materail |
|
valve body .valve cap |
Cf8,CF3,CF8M,CF3M |
| Disc |
304,304L,316,316L |
|
valve rod |
304,304L,316,316L |
|
valve rod nut |
Aluminum Iron Bronze Al bronze |
| handwheel | Gray cast iron, malleable cast iron |
【Main dimensions of low pressure angle globe valve PN1.6MPa】
|
DN |
L |
D |
D1 |
D2 |
f |
b |
zxφd |
Do |
H1 |
H2 |
|
20 |
75 |
105 |
75 |
50 |
3 |
16 |
4xφ14 |
90 |
188 |
205 |
|
25 |
80 |
115 |
85 |
53 |
3 |
16 |
4xφ14 |
100 |
250 |
275 |
|
32 |
90 |
135 |
100 |
66 |
3 |
18 |
4xφ18 |
120 |
275 |
303 |
|
40 |
100 |
145 |
110 |
70 |
3 |
18 |
4xφ18 |
140 |
303 |
343 |
|
50 |
115 |
160 |
125 |
90 |
3 |
20 |
4xφ18 |
160 |
310 |
350 |
|
65 |
145 |
180 |
145 |
117 |
3 |
20 |
4xφ18 |
180 |
337 |
372 |
|
80 |
155 |
195 |
160 |
130 |
3 |
22 |
8xφ18 |
220 |
425 |
490 |
|
100 |
175 |
215 |
180 |
150 |
3 |
24 |
8xφ18 |
240 |
435 |
515 |
|
125 |
200 |
245 |
210 |
173 |
3 |
24 |
8xφ18 |
280 |
500 |
585 |
|
150 |
240 |
280 |
240 |
200 |
3 |
24 |
12xφ23 |
320 |
554 |
640 |
|
200 |
300 |
335 |
295 |
248 |
3 |
27 |
12xφ23 |
400 |
718 |
868 |
[Installation Precautions for Low Pressure Angle Globe Valve]
1) The installation position, height, and entrance and exit directions must meet the design requirements, and the connections should be firm and tight.
2) The handles of various manual valves installed on insulated pipes must not be downwards.
3) Appearance inspection must be carried out before the valve is installed. The nameplate of the valve should comply with the current national standard "General Valve Marking" GB 12220. For valves with a working pressure greater than 1.0 MPa and which function as a cut-off on main pipes, strength and tight performance tests should be conducted before installation, and they can only be used after passing the test. During the strength test, the test pressure is 1.5 times the nominal pressure and the duration is no less than 5 minutes. The valve shell and packing should be free of leakage to be qualified. During the tightness test, the test pressure is 1.1 times the nominal pressure; the test pressure should comply with the requirements of the GB 50243 standard for the duration of the test, and the sealing surface of the valve disc is deemed to be qualified if there is no leakage.
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1. ① Low-pressure angle stop valve product name and model ② Low-pressure angle stop valve caliber ③ Whether the low-pressure angle stop valve comes with accessories so that we can select the correct one for you.
2. If the Zhengang Valve low-pressure angle stop valve model has been selected by the design unit, please order directly from our sales department according to the low-pressure angle stop valve model.
3. When the occasion of use is very important or the environment is complex, please try your best to provide design drawings and detailed parameters, and our Zhenggang valve experts will review and check them for you.
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