Product properties

Product Description

The Alarm Check Valves are designed expressly for use in wet pipe systems. The valve will open and allow pressurization of the alarm chamber upon the operation of one or more automatic fire sprinklers.

The pressurization of the alarm chamber causes the alarm to sound mechanically through the use of a water alarm gong or through the use of a pressure switch, electrically connected to audible or visual signaling devices.

The hydraulic alarm gong is a mechanical, water-powered device signaling the flow of water in an automatic sprinkler system. The unit is usually installed on a wall with the motor inside the building and the gong outside for maximum audibility. Made out of aluminum, stainless steel, and other noncorrosive materials to prevent rust. Red enamel finish for the gong shell is standard.

The S.S. retard chamber prevents false alarms due to severe fluctuations in water pressure or water hammers. In these cases, water admitted to the retarding chamber is automatically released through the drain port without sounding an alarm.

Regular size

Specification

Main Features

1. The valve body is made of heavy DI.

2. Many connecting parts are made of brass, anti-corrosion.

3. Full-inspection in each main parts(body, alarm gong, pressure switch)

4. External pressure compensatory, no block-failure as compared with internal type.

5. Extended quality warranty to 2 years.

Payment & Shipping

Packaging Details: Packing by wooden or carton box or pallet according to product's attribute.

Delivery Detail: 14-40days, based on quantity.

Payment: T/T, Alipay, L/C, Cash, Paypal, TA, Western Union, etc.

Our Service

1. Sample service;

2. Multiple size options;

3. 7*24 hours reply;

4. 2 years quality assurance;

5. OEM production;

FAQ

Q: what can you buy from us?

Fire Alarm Check valve, Fire Deluge Valve, Fire Sprinkler, Fire Foot Valve, Fire Gate Valve

Q: why should you buy from us not from other suppliers?

CREATIVE COMMERCIAL LIMITED is a privately owned company operating on producing the market of industrial equipment in China since 2015. As an nationwide exporter and manufacturer of a wide range of Fire-fighting equipment.

Q: what services can we provide?

Accepted Delivery Terms: FOB CIF CFR...

Accepted Payment Currency: USD EUR

Accepted Payment Type: L/C T/T;

Language Spoken:English French Russian

Q: Can I have a sample order?

A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.

Q: Do you have any MOQ limit for valve order?

A: Low MOQ, 1pc for sample checking is available

Q: How do you ship the goods and how long does it take to arrive?

A: We usually ship by sea. It usually takes 30 days to arrive. Airline shipping also optional.

Q: How to proceed an order for valve?

A: Firstly let us know your requirements or application. Secondly We quote according to your requirements or our suggestions.

Thirdly customer confirms the samples and places deposit for formal order.

Fourthly We arrange the production.

Q: Are you products standard?

A: Our model is standard, if you have specific demand, pls tell us.

Q: Do you have interest to do our own design items?

A: Absolutely! We have big interest.

Key Specifications/Special Features

The ZSFZ wet alarm check valve is a check valve that only allows water flows unidirectionally and drive the matching part to alarm at prescribed pressure and flow. It constitutes the sprinkler system with water flow inductor, pressure switch and sprinklers. This valve is divided into two sides by a valve flap. The above side is connected with system pipeline ant the underside is connected with water supply. The valve flap will open only when the pressure between the two parts reach a certain level

Working Principle

The alarm valve is always on a set condition the system side is full of pressurized water. The heat sensitive component on the sprinkler will blast and spray automatically when there is fire somewhere. Thus the pressure at system side will reduce and then valve flap opens because of pressure difference. One hand the water supplied to system side, on the other hand a small part of water flows to delayer and reach water motor alarm finally to make it alarm. The pressure switch turns pressure signal to electric signal and start fire pump and auxiliary fire-fighting equipments to put out the fire. Water flow inductor will also work and show the position of fire

Delayer

The delayer is a cylindrical water storage tank that with inlet and outlet. Because that the pressure of system side will fluctuate that the valve flap will open at a moment but will close right away. In order that the water motor alarm make misinformation, the delayer store the water to buffer time

Pressure Switch

Pressure switch turns the pressure of water into electrical signal and it was installed above the delayer. When the system is started, pressure in the alarm pipeline reaches the motion level of the switch and the contact will close or open, turning water pressure into electrical signal

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