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central africa ZSFZ150-1.6G wet alarm valve
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Product Description
Working principle
The wet alarm valve device is in a constant state of readiness, with the system side filled with water under working pressure. When a fire occurs in the controlled area of the automatic sprinkler fire extinguishing system, the heat-sensitive element in the closed sprinkler heads on the system network is heated and bursts, automatically spraying water. The pressure on the system side of the wet alarm valve decreases, and under the action of the pressure difference, the valve automatically opens, and the water from the supply side flows into the system side to replenish the network, making the entire network in an automatic sprinkler fire extinguishing state. At the same time, a small amount of water flows to the delay device and the hydraulic alarm bell through the small holes on the seat ring. Under certain pressure and flow conditions, the hydraulic alarm bell sounds an alarm, and the pressure switch converts the pressure signal into an electrical signal to start the fire pump and auxiliary fire extinguishing equipment for water replenishment and fire extinguishing. The pipeline equipped with a water flow indicator also operates accordingly, outputting an electrical signal to allow the system control terminal to promptly detect the area where the fire occurred, achieving the purpose of automatic sprinkler fire extinguishing and alarm.
| Nominal diameter | 100 | 125 | 150 | 200 | |
| Pipe outer diameter | Actual size | 114.3 | 139.7 | 165.1 | 219.1 |
| Tolerance | ±0.61 | ±0.68 | ±0.74 | ±0.76 | |
| Dimension from pipe end to groove edge | Actual size | 15.88 | 15.88 | 15.88 | 19.05 |
| Tolerance | ±0.76 | ±0.76 | ±0.76 | ±0.76 | |
| Groove width | Actual size | 9.53 | 9.53 | 9.53 | 11.10 |
| Tolerance | -0.51 | -0.51 | -0.56 | -0.64 | |
| Groove diameter | Actual size | 110.1 | 135.5 | 160.8 | 214.4 |
| Tolerance | -1.07 | -1.07 | -1.07 | -1.52 | |
Hongan Fire Equipment Co., Ltd.
No. 101, Nantong Road, Ximei Street, Nan'an City, Quanzhou City, Fujian Province