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Swing Check Valve
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Swing Check Valve Manufacturing
Specifications
| Content |
Specification |
| General design standard |
ASME
B16.34/API600 |
| Pressure-temperature rating |
ASME
B16.34 |
| Face
to face dimensions |
ASME
B16.10 |
| Flange type and dimensions |
ASME
B16.5 |
| Butt-welded end |
ASME
B16.25 |
| Inspection and test |
API
598 |
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Construction Features Function
1.Construction
ZGFQ swing check valve adopt B.B., single disc swing,
which is in accordance with international general
standard.
2.Seat
For ZGFQ swing check valve in different pressure
or specifications, the seat would have the following
types:
(1) The connection of the seat ring and the body
may either be threaded or welded type. The threaded
type seat is easy for disassemble, maintenance and
replacement.
(2) The sealing surface is directly welded on the
body.
(3) For stainless steel gate valve, the sealing
surface is machined and finished on the body.
3. Gasket
The connection between body and bonnet shall be
bolted flange. Gasket of flange shall be as follows:
Below Class 600 Female and male gasket
CLASS 600 & Larger Octagon ring gasket
The metal spiral wound gasket with inner ring and
filling with graphite makes more reliable for the
seal of the gasket and excellent capability of disassembling
and reassembling.
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API
Series Swing Check Valve
| API Series Swing Check Valve |
 |
 |
Only for 6″& above 6″Class150;
4″&above 4″, Class300,Class600 swing check
valve, eye screw would be installed on it. |
| RTJ BW |
| CLASS 150 Dimensions （Flange
dimensions refer to ASME B16.5 CLASS150） |
| DN |
2"
|
21/2" |
3"
|
4"
|
6"
|
8"
|
10" |
12" |
14" |
16" |
18" |
20" |
| d |
51 |
64 |
76 |
102 |
152 |
203 |
254 |
305 |
337 |
387 |
438 |
487 |
| LRF&BW |
203 |
216 |
241 |
292 |
356 |
495 |
622 |
699 |
787 |
864 |
978 |
978 |
| H |
150 |
168 |
182 |
215 |
277 |
350 |
400 |
417 |
515 |
540 |
580 |
610 |
| Wt(kg) |
15 |
24 |
40 |
52 |
84 |
100 |
163 |
240 |
436 |
540 |
680 |
830 |
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| CLASS
300 Dimensions （Flange dimensions refer to
ASME B16.5 CLASS300） |
| DN |
2"
|
21/2" |
3"
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4"
|
6"
|
8"
|
10" |
12" |
14" |
16" |
18" |
20" |
| d |
51 |
64 |
76 |
102 |
152 |
203 |
254 |
305 |
337 |
387 |
432 |
483 |
| LRF&BW |
267 |
292 |
319 |
356 |
444 |
533 |
622 |
711 |
838 |
864 |
978 |
1016 |
| H |
178 |
185 |
215 |
246 |
352 |
420 |
400 |
440 |
560 |
580 |
620 |
650 |
| Wt(kg) |
20 |
32 |
50 |
75 |
136 |
184 |
295 |
410 |
565 |
640 |
980 |
1320 |
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| CLASS
600 Dimensions （Flange dimensions refer to
ASME B16.5 CLASS600） |
| DN |
2"
|
21/2" |
3"
|
4"
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6"
|
8"
|
10" |
12" |
14" |
16" |
| d |
51 |
64 |
76 |
102 |
152 |
200 |
248 |
298 |
327 |
375 |
|
L |
RF&BW |
292 |
330 |
356 |
432 |
559 |
660 |
287 |
838 |
889 |
991 |
| RTJ |
295 |
333 |
359 |
435 |
562 |
664 |
791 |
841 |
892 |
994 |
| H |
180 |
205 |
252 |
284 |
380 |
430 |
515 |
550 |
595 |
635 |
| Wt(kg) |
32 |
42 |
58 |
110 |
215 |
392 |
526 |
870 |
940 |
1350 |
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