Zhejiang TongJiang Holdings Company
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No Slam Silent Check Valve in Globe Type of Cast Steel, Flange Class 125 LB
Check Valve PRODUCT INTRODUCTION
Check Valve Description
Silent check valve was to meet this steadily growing problem that the Silent Check Valve evolved. In designing this valve all other characteristics were subordinated to the principal need that it must positively close before a reversal of flow takes place, silently. The Silent Check Valve was designed to open at approximately 1 /4 to 1 /2 psi (2 - 3 kpa), which means that when a pump is shut down, a Silent Check Valve will completely close while there is still positive head on the inlet side of approximately 1 /2 psi (3 kpa). In this simple manner reverse flow, which is a major cause of water hammer, never gets a chance to start (in contrast to the swing check).
Silent check valves are composed of body, seat, fluid guide, disc, Bush and spring. Internal runner is streamlined design, pressure loss is small, disc opening and closing stroke is very short, stop pump can be quickly closed, prevent huge water hammer sound, form silent effect. The valve is mainly used for water supply, drainage, fire protection, HVAC system, can be installed at the outlet of the pump to prevent media backflow and water hammer damage to the pump.
| DN | DN80-1100mm |
| PN | 1.0/1.6/2.5MPa |
| Working temperature | 0℃～80℃ |
| Seal test | 1.1times of PN |
| Casing test | 1.5 times of PN |
Valve Outline Size Drawing
| 125# & 150# ANSI Pressure Casses | |||||||
|
Model |
Size |
Flange Dia. | Face to Face | Bolt Circle Dia. |
Bolt Size |
No. of Bolts | *Max Mating Flange ID |
| 603 | 3" 80 | 7.5" 191 | 6" 152 | 6" 152 | .625" 16 | 4 | 3.375" 86 |
| 604* | 4" 100 | 9" 229 | 7.25" 184 | 7.5" 191 | .625" 16 | 8 | 4.75" 121 |
| 605* | 5" 125 | 10" 254 | 8.5" 216 | 8.5" 216 | .75" 19 | 8 | 5.5" 140 |
| 606* | 6" 150 | 11" 279 | 9" 229 | 9.5" 241 | .75" 19 | 8 | 6.5" 165 |
| 608* | 8" 200 | 13.5" 343 | 10.125" 257 | 11.75" 298 | .75" 19 | 8 | 8.5" 216 |
| 610* | 10" 250 | 16" 406 | 12" 305 | 14.25" 362 | .875" 22 | 12 | 10.75" 273 |
| 612* | 12" 300 | 19" 483 | 14.25" 362 | 17" 432 | .875" 22 | 12 | 12.875" 327 |
| 614 | 14" 350 | 21" 533 | 15.75" 400 | 18.75" 476 | 1" 25 | 12 | 14.75" 375 |
| 616 | 16" 400 | 23.5" 597 | 17.625" 448 | 21.25" 540 | 1" 25 | 16 | 16.5" 419 |
| 618* | 18" 450 | 25" 635 | 18.75" 476 | 22.75" 578 | 1.125" 29 | 16 | 18.75" 476 |
| 620 | 20" 500 | 27.5" 699 | 20.625" 524 | 25" 635 | 1.125" 29 | 20 | 20.625" 524 |
| 624 | 24" 600 | 32" 813 | 24" 610 | 29.5" 749 | 1.25" 32 | 20 | 24.75" 629 |
| 630 | 30" 750 | 38.75" 984 | 29.25" 743 | 36" 914 | 1.25" 32 | 28 | 29.5" 749 |
| 636 | 36" 900 | 46" 1168 | 45" 1143 | 42.75" 1086 | 1.5" 38 | 32 | 36" 914 |
| 642 | 42" 1100 | 53" 1346 | 50" 1270 | 49.5" 1257 | 1.5" 38 | 36 | 42" 1067 |
If you require other sizes and valve design standards, please send email to angela@tjfmcn.com to get the drawing.
Valve Packing with Plywood
Please feel free to contact with us at angela@tjfmcn.com or filling up an enquiry form instructed at the bottom.
You will get an effective response within 24 hours from TongJiang Team.
COMPANY PROFILE
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1. Our Factory
30 years experience of valve and pipeline industry.
10 senior technical engineers
20000 m2 production area
More than 100 employees to provide professional service.
As the reliable OEM for famous valve brand companies.
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TONGJIANG Valve Technology Company was established for 30 years.
There are more than 100 employees which includes 10 professional engineers.
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Reliable Quality, Competitive Price
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Miss Angela
Mobile: +86 13588429004(Whatsapp)
Skype: angelazhuo1
E-mail: angela@tjfmcn.com
Tel No: +86 571 86991717
Official Website: www.zjtjvalve.com