Flat gate valve, used to connect or cut off medium in pipelines is applicable for petroleum, gas, water, oil, etc.
Pressure: Class 150-900Lb or PN 1.0 -16.0MPa
Working temperature: -29-121℃
Characteristics
1. Base adopts O-ring and floating structure, realizing two-way seal for valve. Torque is only 1/2 of general valve.
2. When valve opened completely, the channel is a line, having low coefficient of flow resistance without any pressure losing.
3. Utilizing self-sealing packing structure.
4. Flat gate valve can release high pressure inside body automatically to ensure safety when closing.
5. Using fully seal structure
Standards
Design
Length
Flange
Testing
& Inspection
Pressure-temperature
Identification
JB/T
5298
JB/T
5298
JB/T
79
JB/T
5298
GB
9131
GB/T
12220
API
6D
API
6D
ANSI
B16.5
API
6D
ANSI
B16.34
MSS
SP-25
Materials
Components
Materials
JB/T7298
API
6D
Body/bonnet
WCB
WCB
A352-LCB
A351-CF8M
Disc
2Cr13+ENP
20CrMoV+STL
ANSI
410+ENP
ANSI
316+ENP
Stem
2Cr13
2Cr13
A182-F6a
A182-F316S
Base
25+PTFE
20CrMoV+STL
A105+PTFE
A182-F316+PTFE
Packing
NBR/FPM
Flexible
graphite
PTFE
Gasket
18-8/
Flexible graphite
Bolt
35
35CrMo
A193-B7M
A193-B8
Applicable
temperature
-29~250℃
-29~550℃
-46~250℃
-40~200℃
Applicable
medium
Water,
oil
Steam,
oil
Propane,
ethylene
Nitric
acid
Dimensions
|
300Lb |
DN |
L |
D |
D1 |
D2 |
Do |
f |
b |
H |
H1 |
n-Φd |
|
Convex
flange |
50 |
178 |
160 |
125 |
100 |
250 |
3 |
16 |
584 |
80 |
4-Φ18 |
|
65 |
190 |
180 |
145 |
120 |
250 |
3 |
18 |
634 |
95 |
4-Φ18 |
|
|
80 |
203 |
195 |
160 |
135 |
250 |
3 |
20 |
688 |
100 |
8-Φ18 |
|
|
100 |
229 |
215 |
181 |
155 |
300 |
3 |
20 |
863 |
114 |
8-Φ18 |
|
|
125 |
254 |
245 |
210 |
185 |
350 |
3 |
22 |
940 |
132 |
8-Φ18 |
|
|
150 |
267 |
280 |
240 |
210 |
350 |
3 |
24 |
1030 |
150 |
8-Φ23 |
|
|
200 |
292 |
335 |
295 |
265 |
350 |
3 |
26 |
1277 |
168 |
12-Φ23 |
|
|
250 |
330 |
405 |
355 |
320 |
400 |
3 |
30 |
1491 |
203 |
12-Φ25 |
|
|
300 |
356 |
460 |
410 |
375 |
450 |
4 |
30 |
1701 |
237 |
12-Φ25 |
|
|
350 |
381 |
520 |
470 |
435 |
500 |
4 |
34 |
1875 |
265 |
16-Φ30 |
|
|
400 |
406 |
580 |
525 |
485 |
305 |
4 |
36 |
2180 |
300 |
16-Φ30 |
|
|
450 |
432 |
640 |
585 |
545 |
305 |
4 |
40 |
2440 |
325 |
20-Φ34 |
|
|
500 |
457 |
705 |
650 |
608 |
305 |
4 |
44 |
2860 |
360 |
20-Φ41 |
|
|
600 |
508 |
840 |
770 |
718 |
305 |
5 |
48 |
3450 |
425 |
20-Φ41 |
|
|
700 |
610 |
910 |
840 |
788 |
305 |
5 |
50 |
3960 |
460 |
24-Φ41 |
|
|
800 |
660 |
1020 |
950 |
898 |
305 |
5 |
52 |
4550 |
512 |
24-Φ41 |
|
|
900 |
711 |
1120 |
1050 |
998 |
250 |
5 |
54 |
5250 |
565 |
28-Φ48 |
|
|
1000 |
811 |
1250 |
1170 |
1110 |
250 |
5 |
56 |
5870 |
630 |
28-Φ18 |
|
|
600Lb |
50 |
178 |
160 |
125 |
100 |
250 |
3 |
20 |
584 |
80 |
4-Φ18 |
|
Convex
flange |
65 |
190 |
180 |
145 |
120 |
300 |
3 |
22 |
634 |
95 |
8-Φ18 |
|
80 |
203 |
195 |
160 |
135 |
350 |
3 |
22, |
388 |
100 |
8-Φ18 |
|
|
100 |
229 |
230 |
190 |
160 |
350 |
3 |
24 |
863 |
114 |
8-Φ23 |
|
|
125 |
254 |
270 |
220 |
188, |
350 |
3 |
28 |
940 |
132 |
8-Φ25 |
|
|
150 |
267 |
300 |
250 |
218 |
400 |
3 |
30 |
1030 |
150 |
8-Φ25 |
|
|
200 |
292 |
360 |
310 |
278 |
450 |
3 |
34 |
1277 |
168 |
12-Φ25 |
|
|
250 |
330 |
425 |
370 |
332 |
500 |
3 |
36 |
1491 |
203 |
12-Φ30 |
|
|
300 |
356 |
485 |
430 |
390 |
305 |
4 |
40 |
1701 |
237 |
16-Φ30 |
|
|
350 |
381 |
550 |
490 |
448 |
305 |
4 |
44 |
1875 |
265 |
16-Φ34 |
|
|
400 |
406 |
610 |
550 |
505 |
305 |
4 |
48 |
2180 |
300 |
16-Φ34 |
|
|
450 |
432 |
660 |
600 |
555 |
305 |
4 |
50 |
2440 |
325 |
20-Φ34 |
|
|
500 |
457 |
730 |
660 |
610 |
305 |
4 |
52 |
2860 |
360 |
20-Φ41 |
|
|
600 |
508 |
840 |
770 |
718 |
305 |
5 |
56 |
3450 |
425 |
20-Φ41 |
|
|
700 |
610 |
955 |
875 |
815 |
305 |
5 |
60 |
3960 |
460 |
24-Φ48 |
|
|
800 |
660 |
1070 |
990 |
930 |
305 |
5 |
64 |
4550 |
512 |
24-Φ48 |
|
|
900 |
711 |
1180 |
1090 |
1025 |
- |
5 |
66 |
5250 |
595 |
28-Φ54 |
|
|
1000 |
811 |
1305 |
1210 |
1140 |
- |
5 |
68 |
5870 |
660 |
28-Φ48 |
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