Modified - Aftermarket
The AIR STOP positive air-intake shut-off valve is a safety device used to prevent catastrophic diesel engine over-speed resulting from an inhaled combustible gas from the surrounding atmosphere, or to prevent uncontrolled engine runaway caused by mechanical failure. Installed in the engine air-intake line, the valve cuts off the intake airflow when actuated, starving the engine of air.
The AIR STOP is a guillotine design of shut-off valve that is manufactured to the design demands of engine manufacturers. Standard valves can be rated up to 450 degrees F (232°C), so they can be safely mounted in close proximity to or in the air-line after the turbocharger. The modular design enables easy field conversion from one actuation mode to another, and the removable top cover enables replacement/inspection of all internal parts without removing the valve from the engine air-line.
Note that Envacon can also offer valve designs for extreme heat and vibration applications, and also for higher air-line pressure applications.
