About our company

About ISOV

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The ISOV valve is a positive spring operated air intake shutoff device that provides emergency overspeed shutdown of a diesel engine. Mechanical failure or the presence of combustible vapors like hydrocarbons in the engine’s intake system may cause the engine to overspeed beyond control causing servere damage to the engine or even explosion.

The overspeeding of an engine under such conditions can therefor only be prevented by the application of an air intake valve. The ISOV valve can be released to starve the engine of air and stop it directly. Over 23,000 ISOV valves are in use worldwide to provide reliable engine overspeed control.

As a large supplier to global engine OEM's, ISOV is the industry leading innovator of positive air shutoff valves and systems, offering a diverse selection of valve types, sizes and actuation methods.

With over 25 years of experience, focused exclusively on positive air shutoff valves, our engineers are the most knowledgeable in the industry. Utilizing that expertise, we have developed a rigorous testing and performance analysis process that thoroughly assesses the quality, reliability and durability of every valve from concept to full production. Specific testing may include:

what we offer

1
Pneumatic Shutoff Valves

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2
Manual Shutoff Valves

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3
Electric Shutoff Valves

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4
Failsafe Shutoff Valves

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