ENGINE AIR INTAKE SHUT DOWN (SHUT OFF) VALVES

If flammable gas or vapour is drawn into the intake of a diesel engine it acts as an additional ungoverned fuel supply. When this occurs the only certain way to stop the engine is by the operation of an air intake shut down (shut off) valve. Failure to stop the engine can result in uncontrolled engine overspeed followed by mechanical failure or flash back from the intake resulting in ignition of the surrounding flammable atmosphere.

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Select features required from Automatic reset, Manual reset or Manual start override types listed below.

Automatic reset types

Automatic overspeed shut down

Automatic overspeed shut down valve combined with engine air cleaner

Automatic overspeed or manual shut down

Automatic overspeed or manual shut down valve combined with air cleaner

Automatic overspeed or air pressure to shut down

Automatic overspeed, manual or air pressure to shut down

Air pressure to open

Air pressure to shut down

Solenoid energised to open

Manual reset types

Manual shut down

Manual or air pressure shut down

Solenoid energised to shut down

Manual start override types

Manual or de-energise solenoid to shut down

Manual or loss of oil (or air) pressure to shut down

Automatic overspeed, manual or loss of oil (or air) pressure to shut down

Air intake shut down (shut off) valves