Wafer Silent Check Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
E-mail: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Wafer silent check valves
Features and applications
CVWR type wafer silent check valve adopts fluid-type design, with a smaller head loss; the internal spring can accelerate the closure, to achieve silent effect; metal to metal ensures the reliability of sealing; the install space is small. CVWR wafer silent check valve can be installed on the pump outlet, avoiding water hammer, water hammer noise and destructive impact, to achieve the purpose of preventing reflux and protecting equipments. The valve has been widely used in water supply and drainage, fire protection, construction, HVAC, industrial systems.
Dimensions & constructral diagram
Wafer silent check valve constructral diagram
Technical parameter
| nominal diameter | DN40～250mm |
| nominal pressureMPa | 1.0/1.6 |
| working pressure ℃ | -10～80 |
| sealing test | 1.1 times of nominal pressure |
| shell test | 1.5 times of nominal pressure |
The materials of main parts
| No. | part name | material |
| 1 | body | GG25 |
| 2 | disc | Bronze |
| 3 | spring | SUS316 |
| 4 | seat | Bronze |
External dimensions
| type | nominal diameter DN | L | D |
| CVWR-0040 | 40 | 45 | 90 |
| CVWR-0050 | 50 | 55 | 105 |
| CVWR-0065 | 65 | 70 | 125 |
| CVWR-0080 | 80 | 75 | 140 |
| CVWR-0100 | 100 | 95 | 160 |
| CVWR-0125 | 125 | 115 | 195 |
| CVWR-0150 | 150 | 135 | 215 |
| CVWR-0200 | 200 | 160 | 270 |
| CVWR-0250 | 250 | 200 | 325 |
