Air Intake Shut Off Valves

Air intake shut off valves provide essential emergency overspeed protection for diesel engines by quickly blocking the air supply to stop combustion and prevent dangerous runaways. AMOT offers one of the industry’s widest ranges of automatic and manual Positive Air Shut Off Systems (PASS), engineered to deliver reliable performance across engines of all sizes and applications. Our solutions—designed and built under trusted names like AMOT, Chalwyn, Rigsaver, and Roda Deaco—help safeguard personnel, equipment, and the environment in hazardous locations.

Each AMOT air intake shut off valve is developed to meet strict safety and regulatory requirements, with options for spring-return or pneumatic actuation, hazardous-area approvals, and easy integration into OEM or retrofit installations. For complete diesel engine protection, pair your air intake shutoff solution with our diesel fuel shut off valves to create a coordinated shutdown system that minimizes risk and maximizes uptime.

Automotive Trucks 

Ford, GM, Dodge, Toyota Pick-Ups

Heavy Duty Trucks

Class 8 Tractors such as Peterbilt, Kenworth, Freightliner

Rental/Mobile Equipment

Light Towers, Generators, Welders

Drilling & Completion

High-Horsepower Drilling Units, Fracturing Equipment, Cementing Units