Rubber Disc Check Valve
Purpose
This valve is used mainly for water supply and drainage system and can be set on the pump outlet to prevent the pump from getting harmed by the medium backflow. It can also be set on the mouth of a water outlet pipe to prevent the medium from backflow.
Features
Simple structure, reliable performance, long durable, open—close times can be up to over million ones, suitable for sewage.
Executive Standard
- Size of flange: GB/T 17241.6.
- Test and inspection standard. GB/T 13927.
Main Performance Parameters
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Main Part Materials
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Main dimensions
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DN |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
450 |
500 |
600 |
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L |
203 |
216 |
241 |
292 |
330 |
356 |
495 |
622 |
698 |
787 |
914 |
978 |
978 |
1295 |
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D |
165 |
185 |
200 |
220 |
250 |
285 |
340 |
405 |
460 |
520 |
580 |
640 |
715 |
840 |
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D1 |
125 |
145 |
160 |
180 |
210 |
240 |
295 |
355 |
410 |
470 |
525 |
585 |
650 |
770 |
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D2 |
99 |
118 |
132 |
156 |
184 |
211 |
266 |
319 |
370 |
430 |
480 |
548 |
609 |
720 |
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b |
19 |
19 |
19 |
19 |
19 |
19 |
20 |
22 |
24.5 |
26.5 |
28 |
30 |
31.5 |
36 |
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n-od |
4-19 |
4-19 |
8-19 |
8-19 |
8-19 |
8-23 |
12-23 |
12-28 |
12-28 |
16-28 |
16-31 |
20-31 |
20-34 |
20-37 |
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