The best price of Meiji alarm valve in Dong Nam

Manufacture: meiji
Product code: The best price

FIG. 1007, ALARM CHECK VALVE, PN16/20 Price of Meiji alarm check valve: 9,800,000 VND stainless steel structure: 304 and ductile steel 100% genuine imported, nationwide warranty Contact 0917.911.114

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Consulting hotline: 0944934114
Product information

- Structure: ductile steel, 304 stainless steel, carbon steel

- Working pressure: 16/20 bar.

- Test pressure: Shell: 24/30 bar, Seat: 17/21 Bar

- Working temperature: -10°C to 80°C

- Flanges to JIS 10/16K, BS4504 PN16/20, ANSI #150 (300PSI).

- Size: DN 80mm, DN 100mm, DN 150mm, DN 200mm.

Content

• The alarm check valve is split ring seat, rubber facing, water flow check valve is intended for use in wet pipe fire protection systems. They can be installed vertically and they are designed to automatically trigger an electrical or hydraulic alarm when there is a steady flow of water the system equivalent to the discharge rate of one or more sprinklers.

• Cut off alarm check valve including pressure gauge to monitor system pressure condition, check valve, main relief valve and alarm check valve. Bypass check valves serve to reduce the possibility of false alarms by allowing slow as well as transient increases in water pressure through the system without opening the water cap. Operate

• When the fire protection system is initially pressurized, water will flow the system until pressurized water is supplied and the system becomes balanced and the torsion spring closes chirping in the Alarm Check Valve . Once the pressure has stabilized, the Alarm Check Valve comes play and the groove located in the center of the seat ring is sealed. Therefore, with the alarm check valve set for service, no flow passes through the alarm port to the alarm devices (water engine alarms or pressure alarm switches).

• When there is a steady stream of water the sprinkler system due to the operation of the nozzle, the Clapper opens. The water is then allowed to flow the centrally located groove in the Seal and exit out of the gate alarm towards the restriction assembly. When the flow through the inlet restriction of the limited assembly exceeds the outflow through the outlet restriction, the Retard chamber is provided in case the system with variable pressure, begins to fill. Then the water motor alarm or pressure alarm switch will be activated. The alarm will continue to be triggered as long as the Clapper remains open. Water in alarm lines will automatically drain out through the 3mm drain hole in the Restriction Board when Clapper closes the damage due to stopping water flow the sprinkler system.

• In case of system pressure changes, slow as well as small increase in water supply pressure can continue to be built the system without opening the clapper. A transient supply pressure just enough to open the Clapper momentarily will not cause a false alarm and part of the pressure increase will be trapped in the system, thereby reducing the possibility of another opening. Any water in the alarm line is automatically drained, further reducing the possibility of false alarms due to successive increases in supply pressure.

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