FM Approved hydraulically driven mechanical alarm bell designed to provide an immediate audible alert when a fire sprinkler system activates. Requiring no electrical power or external lubrication, the Model GA is a reliable, self-contained alarm solution for wet pipe and deluge sprinkler systems.

When water flows through the alarm or deluge valve, it enters the motor housing via a nozzle, driving the impeller and striker arm to strike the aluminium gong — producing a loud, continuous alarm signal. Constructed from corrosion-resistant aluminium alloy, it is built to withstand demanding environments.

Key Specs:

• Max Working Pressure: 12.3 Kg/sq.cm (175 PSI)
• Min. Activation Pressure: 0.35 Kg/sq.cm (5 PSI)
• Connection: Inlet 3/4″ BSPT (3/4″ NPT) | Drain 1″ BSPT (1″ NPT)
• Gong Diameter: 205mm (8″) | Gong Depth: 50mm (2″)
• Finish: Epoxy red powder-coated
• Weight: 3.0 Kg
• Mounting: Type A (surface) & Type B (through-wall)

Key Features: No electrical supply required, lightweight non-metallic impeller and drive shaft, corrosion-resistant aluminium alloy construction, and suitable for both indoor and outdoor installation.

Must be installed in accordance with NFPA 13 requirements. A 3/4″ strainer in the alarm line is required to protect the nozzle from clogging.