Maxtorque declutchable manual override gears

Maxtorque™ declutchable manual override gears can be used with pneumatic, hydraulic, or backdrivable electric actuators that have higher torque requirements. Compatible with both spring-return and double-acting actuators, they ensure reliable valve operation during maintenance, emergencies, and system failures. Their durable design and simple installation suit a range of industrial settings, including oil and gas, water treatment, and manufacturing.

These gears help you maintain valve control without sacrificing speed, safety, or accessibility. By combining a compact, direct-mount design with a highly efficient gearset, they reduce operator effort and provide dependable manual backup.

• Emergency operation of automated valves during loss of power, instrument air, or control signal
• Commissioning and functional testing of valves where manual positioning is required before the actuator is placed in service
• Maintenance and troubleshooting by isolating a process or cycling a valve while the actuator is being serviced or has been removed
• Remote or difficult-to-access installations where a reliable and local manual backup is required
• Critical shutoff or isolation duties (e.g., emergency shutdown valves and block valves) where manual intervention may be required as a contingency
• Processes with intermittent automation requirements

• Highly efficient, double-enveloping bronze alloy worm gearset
• Torque tube design with robust lever engagement
• Direct mount to valve
• One-piece drive adapter
• Self-locking design
• Reduced handwheel size
• Suitable for spring-return and double-acting actuators
• Switchable worm gear that enables manual or automatic operation
• Standard and blank driver options that allow custom machining, with flexible installation