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IMI STI
GR - Manual Actuator Override
Manual override system for actuators, allowing operation when instrument air is unavailable.
Allows manual actuator operation with a ball-bearing gear system that minimises effort and enhances durability.
Supports remote operation with an optional mechanical chain transmission for improved accessibility.
Includes an adjustable thrust limiter and locking mechanism to secure the valve in any required position.
Features
The GR Manual Override enables manual operation of actuators when instrument air is unavailable. Designed for single and double-acting actuators, it allows precise control of the valve position. The internal gear system is mounted on ball bearings to minimise operator effort and ensure long service life. It can be integrated with STI actuators or installed directly on a valve without an actuator. Available in various sizes, it includes optional features such as a mechanical chain transmission for remote operation and an adjustable thrust limiter. The robust design ensures reliable performance in standard, offshore, sandstorm, and copper-free environments.
Key features
Single and double-acting actuator compatibility
Ball-bearing gear system
Optional chain transmission
Adjustable thrust limiter
Locking mechanism
Sandstorm-resistant bellows
Temperature: -40°C to 85°C
Aluminium, cast iron, or carbon steel
Multiple size options
Direct valve mounting
Specifications
Material
Painted Aluminium
Painted Cast Iron
Painted Carbon Steel
