The V series mechanical action valves use a new concept design which automatically closes the air intake once a pre-set engine speed is exceeded.

Suitable for both normally aspirated and turbocharged diesel engines up to 275 kW (370 HP), these compact valves are said to improve on the well-established differential pressure intake airflow principle for automatic shutdown. They also incorporate a manual emergency shutdown feature to meet the requirements specified in EN 1834-1:2000 for diesel engine air intake shutdown valves for operation in hazardous areas.

 

Furthermore, the valve has been designed to necessitate a manual reset with positive intervention by an operator rather than rely upon potentially outmoded and less safe practice where the valve automatically resets on an engine restart.