XT Air Intake Shut Off Valve

The AMOT XT Air Intake Shut Off Valve (also known as a positive air shutoff valve or diesel engine emergency shutoff valve) is the industry’s most advanced butterfly-style solution for preventing diesel engine runaway.

Runaway diesel events occur when external fuels, such as oil mist, gas vapors, or excessive fuel injection, cause uncontrolled engine acceleration. The XT valve improves operations by choking off intake air, shutting down combustion safely and rapidly.

When paired with the Revguard 2 speed switch and activation kit, the XT valve integrates into a fully automatic overspeed shutdown system, trusted by OEMs worldwide for critical safety applications.

Key Features & Benefits

• Wide Temperature Range: Operates reliably from -40°C to +125°C.
• Engine OEM Certified: Tested to strict standards for shock, corrosion, vibration, lifecycle durability, and IP67/IP69k ingress protection.
• Proven Reliability: The most widely trusted butterfly shutoff valve by engine manufacturers.
• Field-Serviceable: Components can be replaced easily to minimize downtime.
• Flexible Operation Options:
  • Integrated valve position switch (optional)
  • Manual override option
  • Relay enclosure box option (with valve open switch)
• Rugged Build: Manufactured from anodized aluminum and Viton seals for corrosion resistance.
• Ingress Protection: IP69k-rated for high-pressure water jets and dust, ensuring long life in harsh environments.
• Compact Design: Easy to install on modern low-emission diesel engines.
• Manual Reset: Simple reset via the top handle turn.
• Cold Weather Ready: Suitable for cold climate operations down to -40°C.