Wet Alarm Check Valve With Carbon Steel Water Motor Gong

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Product Introduction:

When a fire breaks out in the protected area of the automatic sprinkler system and the ambient temperature of the fire scene rises, the glass ball on the closed nozzle bursts (or is easily fused and financialized), and the nozzle opens to spray water to extinguish the fire. At this time, due to the drop in water pressure of the pipe network on the outlet side of the wet alarm valve, a pressure difference is formed, the valve disc assembly is opened, and the water source water is continuously replenished to the pipe network to extinguish the fire. A certain water pressure impacts the hydraulic alarm bell and sends out a continuous alarm sound. The pressure switch acts to connect the electrical contacts and the control center to give an alarm with sound and light, and at the same time start the main water supply pump for fire extinguishing.

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Description

Technical Parameters

Wet Alarm Check Vlave

The alarm check valve is a water flow alarm device designed for vertical installation in the main supply to a wet pipe sprinkler system. When a flow of water from the system equals or exceeds that of a single sprinkler, the valve is to actuate a fire alarm. It has a carbon steel material water motor gong which is a mechanical bell – driven by water – that provides localized notification when water is actively flowing through the system. Water motor gongs can be seen on older buildings as a large, flattened dome, cast iron bell mounted on an exterior wall. Gongs will always have a drain immediately beneath them. When the Alarm Check Valve clapper opens during a water flow, a pipe is uncovered which allows water to flow to the gong. This water strikes a water wheel inside the gong, spinning the wheel and driving the hammer inside the gong. The spent water then runs freely out the drain to the exterior of the building. Water motor gongs are seen less in newer system installations as they have been replaced by electric-powered bells.

Specification

Material	Body	Ductile iron
	Clapper	SS304 w/NBR
	Pipes	SS304
	Ball valve & strainer & check valve	Brass
	Water motor gong	SS304
Working pressure	12 bar
Sealing testing pressure	24 bar
Applicable temperature	4°C to 70°C
Installation	Vertically
Flow switch contact capacity	DC24V,0.5A
Connection	Flange × Flange
Available Size	DN80 thru DN250 (3" thru 10")

FAQ

Q:How can we guarantee quality?

Always a pre-production sample before mass production;

Always final Inspection before shipment;

Q:How long does it take to produce the product?

Conventional products and small quantities can be produced within 15 days. The specific production time needs to have specific products and product quantities to confirm.

Q:What services can we provide?

Accepted Delivery Terms: FOB,CIF,EXW,Express Delivery;

Accepted Payment Currency:USD,CNY;

Accepted Payment Type: T/T,L/C,MoneyGram,Credit Card,PayPal,Western Union,Cash;

Language Spoken:English,Chinese.

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