Product Description

The VID Fire-Kill Model WAC and AFA valves are wafer style wet alarm check valves with a unique anti-false alarm unit integrated, designed for detection of small changes in water flow commonly found in low pressure watermist systems, making it possible to easily and reliably detect system actuations and changes to pressure. The Anti False Alarm Unit ensures that false alarms created from pressure burst will not be detected. The Model WAC and AFA valves use 12-24VDC and send a relay (NO or NC) signal in case of water flow. The valves have a flow test arrangement built into the valves and are very compact compared to more conventional solutions.

Product Approval & Scope


The VID Fire-Kill Model WAC and AFA  valves have successfully been endurance tested with 1000 operations cycles and have furthermore been tested to corrosion tests and other such component tests described in CEN/TS 14972. For FM Approved systems the valve is approved together with the FIREKILL OH-VSO Automatic water mist nozzle.


The VID Fire-Kill Model WAC and AFA valves can be used in wet pipe, automatic fire protection systems. As the valves are designed to detect water flows around 25-30 l/min, they are perfectly suited for low pressure watermist systems.
Wet Alarm Check valves are often part of a wet pipe systems where water flow created form nozzle release needs to be detected.

Product Uniqueness

– Compact sized design with no external trim,
– Will not give any false alarms,
– Full test arrangement is integrated in the valve unit,
– Electronics can be tested without the need of waterflow,
– Simple maintenance requirements and fast disassembly of the valves if needed.

Model WAC & AFA related documents