Operating handwheel GR

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Product overview
The GR Manual Actuator Override enables manual operation of valve actuators when instrument air is unavailable. It is compatible with single and double-acting actuators and can be mounted directly on a valve or integrated with STI actuator ranges. The internal gear train runs on ball bearings to reduce operator effort and extend service life. Multiple sizes and optional accessories are available to suit accessibility and environmental requirements.

Key features

• Compatible with single and double-acting actuators
• Internal gear system mounted on ball bearings to minimise operator effort
• Optional mechanical chain transmission for remote operation
• Adjustable thrust limiter for controlled movement
• Integrated locking mechanism to secure valve position
• Sandstorm-resistant bellows option
• Available in several size options and mounting configurations
• Direct valve mounting or integration with STI actuators

Materials
Material options / finishes:
Painted Aluminium
Painted Cast Iron
Painted Carbon Steel

Additional information

• Provides precise manual positioning of valves when instrument air is unavailable
• Ball-bearing gear train designed for low operating torque and durability
• Can be fitted directly to valves or combined with STI actuator models
• Mechanical chain transmission option improves accessibility for remote installations
• Suitable for standard, offshore and harsh (e.g. sandstorm) environments; copper-free variants available

Technical specifications

• Compatibility: single and double-acting actuators
• Gear type: internal gear system on ball bearings
• Remote operation: optional mechanical chain transmission
• Thrust limiter: adjustable
• Locking: integrated locking mechanism
• Materials: Painted Aluminium; Painted Cast Iron; Painted Carbon Steel
• Temperature range: -40°C to 85°C
• Mounting: direct valve mounting or integration with STI actuators
• Sizes: multiple size options available
• Environment suitability: standard, offshore, sandstorm-resistant options; copper-free variants available