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Wet Alarm Valve with ISO, CCC Certificates
DN150 Deluge Check Valve
| SIZE | DN100 | DN150 | DN200 | DN250 |
| HEIGHT mm | 350 | 410 | 550 | 620 |
| Working Pressure | 1.2Mpa | 1.2Mpa | 1.2Mpa | 1.2Mpa |
| Seal Test | 2.4Mpa | 2.4Mpa | 2.4Mpa | 2.4Mpa |
| Strength Test | 4.8Mpa | 4.8Mpa | 4.8Mpa | 4.8Mpa |
| Control way | Manual Type/ Electric Type/Guiding tube control | |||
Alarm Check Valves are used in wet pipe fire sprinkler systems. They primarilyserve a dual purpose in that they prevent a reverse flow of water through their bodies (non-return) and also provide for the use of a hydraulic fire alarm which is not dependent upon an electrical power supply for its operation.
Through the use of a hydraulic retard chamber a time delay is provided to eliminate potential false alarms caused by fluctuating water supply pressures. Where constant pressure water supplies are used the retard chamber (time delay) is not necessary. By incorporating the use of electrical pressure switches, other supplemental alarms, annunciators, etc. may also be used.
| 1 | Valve Body |
| 2 | control line strainer |
| 3 | Inlet Gage |
| 4 | One-way valve |
| 5 | reset ball valve(NC) |
| 6 | Solenoid Valve(NC) |
| 7 | control chamber pressure gage |
| 8 | Automatic drain valve |
| 9 | Emergency manual ball valve(NC) |
| 10 | testing alarm bell ball valve(NC) |
| 11 | Alarm isolation valve ball valve (NO) |
| 12 | alarm pipeline strainer |
| 13 | Water motor alarm |
| 14 | pressure switch |
| 15 | drain valve(automatic drain) |
| 16 | Drain valves(NC) |
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