I. Product Features and Application Range of Stainless Steel Deluge Valve ZSFM:

This deluge alarm valve (hereinafter referred to as the deluge valve) is a direct-sealing diaphragm valve with no shaft, metal valve disc, or other components inside, thus eliminating rust issues. It features durability, reliable performance, flexible installation, and easy maintenance. It is widely used in various open systems (where the system-side pipeline is equipped with open sprinklers), such as deluge systems, water curtain systems, and water mist systems. This valve is manufactured in accordance with the GB5135.5-2003 standard. The Ex series uses explosion-proof solenoid valves, suitable for various locations with explosion-proof requirements. The P series is made of stainless steel, offering strong corrosion resistance.

The deluge valve, combined with various open sprinklers, forms a deluge system, also known as an open fire extinguishing system. Once the deluge valve is activated, all open sprinklers connected to it spray water simultaneously. Therefore, the deluge system is suitable for high-risk locations where fires spread rapidly, and water spray from closed sprinklers cannot effectively cover the fire area, as well as locations with excessively high spaces where closed sprinklers cannot activate in time. Examples include stages, fireworks factories, and other severely hazardous locations (such as those involving solvents, paints, asphalt, etc.).

Since the deluge system is a single-coverage facility, it must be designed according to specifications. The protection range of one set of deluge valves must not exceed 260 m2.

II. Product Composition and Working Principle of Stainless Steel Deluge Alarm Valve:

The deluge system consists of a deluge valve, hydraulic alarm bell, pressure switch, fire detectors (electronic detectors, closed sprinklers), and fire extinguishing sprinklers (open, water mist, water curtain). It is suitable for high-risk locations where fires spread rapidly, such as stages, fireworks factories, and severely hazardous Level II locations, including flammable liquids, spray coating operation areas, fixed flammable and combustible aerosol products, solvent and paint product factories, etc. When the system is in the standby state, the deluge valve seals the fire-fighting water on the water supply side of the pipeline network, while the system-side pipeline network contains no water. The deluge valve can be activated in three ways: electric control, pilot tube control (wet or dry), and manual control. Users can choose the appropriate method based on their specific conditions.

The opening and closing of the deluge valve are controlled by the water pressure in the diaphragm chamber. When the water pressure in the diaphragm chamber equals the supply pressure, the diaphragm closes, preventing water from entering the system. When the solenoid valve is opened, the emergency manual quick-opening valve is opened by personnel, or a closed sprinkler activates, the water pressure in the diaphragm chamber drops to a certain value, and the diaphragm chamber is pushed open by the supply pressure, allowing water to flow into the system-side pipeline network for fire extinguishing.

Electric control: First, electronic detectors located in the protected area send the detected fire signal to the fire control center. The fire control center filters and processes the signal, then sends an activation signal to the solenoid valve on the deluge valve. The solenoid valve opens, depressurizing the diaphragm chamber, which activates the deluge valve. Water flows from the supply side into the system pipeline network and is sprayed through open sprinklers across the entire protected area to perform the fire extinguishing function.

Pilot tube control: The water pressure in the diaphragm chamber can also be controlled by a wet or dry pilot tube system, forming a wet (water) or dry (air) system. When a closed sprinkler activates, the water pressure in the diaphragm chamber drops through the pilot tube, opening the valve.

Manual control: This is generally used for debugging, testing, or in emergencies.

This valve is equipped with an anti-reset device. Under proper operation, once the water pressure in the diaphragm chamber is released, regardless of whether the solenoid valve or manual quick-opening valve is closed again, the diaphragm pressure chamber cannot repressurize, and the valve remains open. This ensures that during fire extinguishing, the deluge valve will not close again due to sudden power failure and solenoid valve closure. After the fire is extinguished, personnel must open the reset ball valve to repressurize the pressure chamber and close the valve.