Diesel engine emergency shutdown

A shut down valve (also referred to as SDV or Emergency shutdown valve, ESV, ESD, or ESDV) is an actuated valve designed to stop the flow of a hazardous fluid or external hydrocarbons (gases) upon the detection of a dangerous event. This provides protection against possible harm to people, equipment or the environment. Shutdown valves form part of a Safety instrumented system. The process of providing automated safety protection upon the detection of a hazardous event is called Functional Safety Shutdown valves are primarily associated with the petroleum industry although other industries may also require this type of protection system. ESD valves are required by law on any equipment placed on an offshore drilling rig to prevent catastrophic events like the BP Horizon explosion in the Gulf of Mexico in 2010.

diesel engine emergency shutdown
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Diesel engine emergency shutdown
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Pro Model

Elite Model

Premium Model

Custom Applications

Air Shut Off Valve Systems: Our Products

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Easy to Test

All DTI Guardian Systems contain a built in, easy-to-use, "Test" function  which allows you to safely test the DTI Guardian Safety System from the driver's seat.

Diesel engine emergency shutdown

The table below displays the different features and components of each Guardian Valve System that DTI manufactures:

The color coding makes it easy for customers to distinguish which air shut off valve system they have purchased and, if for any reason a problem occurs, they are able to give the correct information to our team in order to resolve the issue quickly.


All of the Guardian Valve models are available in 3”, 4” and 6” models and the 3” model is fitted with a Nozzle system that allows it to be modified to fit smaller pipes down to 1”.


DTI holds the Patent rights for all parts of the DTI Guardian Safety System and therefore the product cannot be replicated by any of our competitors advanced systems.

Easy to Install and Upgrade

The DTI Guardian Safety System utilizes simple plug and play technology, making installation quick and cost-effective compared to other diesel shutdown systems.

Diesel engine emergency shutdown

Easy to Operate

Our System doesn't require you to search the engine compartment to reset it. Using an electronic system and dash controller it allows you to simply Stop/Run the valve with the push of a button.

Diesel engine emergency shutdown

The table on this page outlines the different features and components for the three main models of the Guardian Valve, the innovative air shut off valve that Diesel Tech Industries manufactures. We’ve also included our flagship Premium model. These systems are color coded as follows:

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