Suzhou Alpine Flow Control Co., Ltd
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Non Slam Check Valve For Fire Fighting System Anti Water Hammer
Fire Fighting Anti Water Hammer Non Slam Check Valve Ductile iron Low Head Loss
Description:
NSCV- Non Slam Check Valve is used as protection against reverse flow when power failure in areas where noise pollution or water hammering is a critical issue. It can provide not only quiet performance but also low head loss. The faster closing speed can decrease the reverse speed of water to minimize the water hammer.
Features:
·Extremely short stroke, quick close
·Diffuser design- lowest head loss and streamline flow
·Zero leakage of rubber disc seat
·Spring hidden on back side of disc prevent clogging
·Bronze bearing-long life service
·Disc will positively close before reverse flow, and maximize the closing speed up to 0.2 Sec.
· Installation can be vertical/horizontal/inclined.
·High strength ductile iron body used for durability and less weight.
·Advanced dynamic design of single body with diffuser provides streamline flow and assures lower head loss.
·Stainless steel spring hidden in the diffuser under protection while valve in operation.
·Comply with EN 558-1, ISO 5752 and EN 1092-2, ISO 7005-2 flange dimension.
Technical Data:
| Size | DN50-DN600 |
| Working Temperature | - 10C- 80C |
| Flange | AISI B16.1 Or PN16 |
| Flow Media | Clean Water |
| Quality System | |
| IQC | Check call incoming parts |
| IPQC | Check the production process is qualified |
| FQC | All valves are pressure tested |
| OQC | Check the valve ourlook and packing |
Dimension:
DN50 - DN350
DN400 - DN600
Materials:
DN50-DN350
| No. | Part Names | Material | Standard |
| 1 | Body | Ductile Iron | GJS500-7 |
| 2 | Disc | Ductile Iron+Rubber | GJS500-7+EPDM/NBR |
| 3 | Spring | Stainless Steel | AISI304/316 |
| 4 | Stem | Stainless Steel | AISI420/304/316 |
| 5 | Washer | Plastic/Rubber | Nylon/EPDM |
| 6 | Nut | Stainless Steel | AISI420/304 |
| 7 | Bushing | Bronze | C61900 |
| 8 | Diffuser | Ductile Iron | GJS500-7 |
| 9 | Set Screw | Stainless Steel | AISI304 |
| No. | Part Names | Material | Standard |
| 1 | Body | Ductile Iron | GJS500-7 |
| 2 | Disc | Ductile Iron+Rubber | GJS500-7+EPDM/NBR |
| 3 | Spring | Stainless Steel | AISI304/316 |
| 4 | Stem | Stainless Steel | AISI304 |
| 5 | Washer | Plastic | Nylon |
| 6 | Nut | Stainless Steel | AISI304 |
| 7 | Bushing | Bronze | C61900 |
| 8 | Plug | Ductile Iron | GJS500-7 |
| 9 | Diffuser | Ductile Iron | GJS500-7 |
| 10 | Set Screw | Stainless Steel | AISI304 |