Overview
The Tyco WMA-1 water motor alarm is a hydraulically operated outdoor alarm designed for use with fire protection system waterflow-detection valves. This mechanical alarm gong offers a dependable, maintenance-free solution for audible fire system notification. It can easily be mounted to any type of rigid wall and can be used in conjunction with alarm check, dry pipe, deluge, and preaction valves to sound a local alarm.
Key Features
- Energy-efficient lightweight impeller design capable of producing a very high sound level
- Corrosion-resistant aluminum alloy gong, gong-mount, and water motor housing
- Polymer bearings do not require lubrication
- UL and C-UL Listed; FM, VdS Approved, and LPCB Approved
- Can accommodate range of wall thicknesses from 2 to 18 inches (50 to 450 mm)
- Furnished with approved ¾-inch (20 mm) Y-strainer
Technical Specifications
- Operating Pressure Range: 7 to 300 psi (0.5 to 20.7 bar)
- Water Inlet: 3/4 inch NPT
- Drain Outlet: 1 inch drain outlet
- Nozzle K-Factor: 10.1 lpm/bar1/2
- Housing Material: Corrosion-resistant aluminum alloys with brass nozzle insert
- Certifications: UL, C-UL, FM, VdS, LPCB
- Bearing Type: Polymer drive bearings with no lubrication required
Typical Applications
Water motor gongs are typically required by NFPA 13 and local fire codes for fire sprinkler systems exceeding 20 sprinklers and are often installed on exterior walls where they provide an audible warning to occupants and passersby while also helping firefighters locate fire department connections. The WMA-1 is ideal for commercial buildings, industrial facilities, warehouses, and any structure requiring NFPA 13 compliance.
Compatibility & Replacements
Compatible With
- Fire protection system waterflow-detection valves
- Alarm check valves
- Dry pipe fire sprinkler systems
- Deluge systems
- Preaction fire protection systems
- NFPA 13 compliant sprinkler installations (20+ sprinklers)
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or Tyco Fire Products documentation before ordering for specific model interchangeability.
Works With
- Tyco fire protection valve trim packages
- Industry-standard alarm line piping (¾ inch NPT inlet, 1 inch drain)
- Listed and approved Y-strainer assemblies
- Rigid wall mounting surfaces (wood, concrete, metal)
