Sprinklers & Alarm Valves

Deluge Alarm Valve Group (ZSFM Series)

ZSFM Deluge Alarm Valve is a diaphragm-type check valve. It relies on diaphragm pressure balance to control valve opening, and can be integrated with various fire detection networks to form complete deluge or water spray systems.

Key Features

High-precision pressure chamber balance design for instant opening
Heavy duty ductile iron construction ensures prolonged pressure holding
Includes hydraulic alarm gong and pressure feedback switch
Supports mechanical, pneumatic, or electrical remote trigger

Technical Specifications

Size Range: DN50 - DN300
Working Pressure: 1.6 MPa
Testing Pressure: 3.2 MPa (Shell 6.4 MPa)
Solenoid Valve: DC24V / 0.5A
Connection Type: Flanged / Grooved

Parts & Materials List

Main Valve Body: Ductile Iron (QT450-10)
Diaphragm / Seal: Nylon Thread Reinforced NBR Rubber
Solenoid Pilot: Solid Brass / Stainless Steel 304
Pipes & Trims: Stainless Steel / Brass

Applications

Automatic sprinkler systems
Commercial and residential buildings
Industrial warehouses
High-hazard deluge and pre-action systems

Quality & Testing

Pressure and leakage testing per GB 5135 series; alarm sensitivity verified with flow switches and alarm gongs.

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Frequently Asked Questions

How does the ZSFM deluge alarm valve keep the system closed until a fire is detected?

The ZSFM is a diaphragm-type valve that stays closed under system pressure through diaphragm pressure balance. When a fire detection network sends a signal, the diaphragm chamber pressure is released and the valve opens instantly, flooding every open nozzle in the deluge zone.

What size range and pressure ratings does the ZSFM cover?

The ZSFM deluge alarm valve group covers DN50 to DN300 with a working pressure of 1.6 MPa and a testing pressure of 3.2 MPa (shell test 6.4 MPa). Flanged and grooved connections are both available.

Which remote triggers can open the ZSFM deluge valve?

The valve supports mechanical, pneumatic and electrical remote triggers. The electrical option uses a DC24V / 0.5A solenoid pilot, so the valve group can be integrated with most fire alarm control panels.

What does the complete ZSFM deluge alarm valve group include?

The group includes the ductile iron (QT450-10) main valve with a nylon-reinforced NBR diaphragm, a hydraulic alarm gong, a pressure feedback switch, and stainless steel or brass trims for alarm and discharge connections.