check valves
Check Valve is a kind of valve whose opening and closing parts are circular disc and act by its own weight and medium pressure to block medium reverse flow. Is An automatic valve, also known as check valve, one-way Valve, backflow valve or isolation valve. Disc movement is divided into lifting and swing-type. Lift check valves are similar in structure to globe valves except for the stem that drives the disc. The medium flows in from the inlet (lower side) and out from the outlet (upper side) . The valve is opened when the inlet pressure is greater than the combined weight of the disc and its flow resistance. Conversely, the medium reverse flow when the valve is closed. Swing check valves have an inclined disc that can be rotated about an axis and work in a similar way to lift check valves. Check valves are often used as the bottom valve of a pumping unit to prevent backflow of water. Check Valve and globe valve combination use, can play the role of safe isolation
Size Chart:
SIZE
ITEM |
2" |
2-1/2" |
3" |
4" |
5" |
6" |
8" |
10" |
12" |
|
| Dn |
51 |
64 |
80 |
100 |
126 |
152 |
204 |
254 |
302 |
| L |
203 |
216 |
241 |
292 |
330 |
356 |
495 |
622 |
698 |
| D |
152 |
178 |
191 |
229 |
254 |
279 |
343 |
406 |
483 |
| c |
120.5 |
139.5 |
152.5 |
190.5 |
216 |
241.5 |
298.5 |
362 |
432 |
| H |
142 |
148 |
163.5 |
172 |
237 |
233 |
301 |
348 |
419 |
package
FAQ
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Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition.
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2) Delivery time required.
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A:More than 20 years in this industry . It makes us professional .Good credit in this market. All of our machines are the assurance of our responsibility.
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