|Roda Deaco provides air intake shutoff valves and systems (also known as emergency shutdown valves or ESD), offering a wide selection of sizes and actuation methods to meet the installation requirements of the hundreds of different diesel engine applications in use today.
Diesel engines are a potential source of ignition when used in areas where combustible gas,
vapors, or vapor dust may exist, sometimes leading to catastrophic consequences for personnel,
production facilities and the environment. Various industry regulatory agencies in several countries have therefore established regulations for their industries requiring air intake shutoff devices on diesel engines.
Diesel engine speed is governed by controlling the amount of fuel fed to the
engine through its fuel system and internal speed governor. If a flammable material
is drawn into the air intake system of a diesel engine it acts as an additional
ungoverned fuel supply. This additional fuel source can cause the diesel engine
to accelerate or overspeed out of control. This condition is referred to as diesel
engine runaway. The result of a diesel engine runaway can range from engine
damage to a catastrophic explosion.