EIM Part-turn Manual Gear Operator

The EIM™ Part-turn Manual Gear Operator, designed by Emerson, is a robust and reliable manual actuator engineered for quarter-turn valve applications. It provides precise manual operation of ball, butterfly, and plug valves where electric, pneumatic, or hydraulic automation is not required or as a backup to motorized actuators in case of power failure. Built for durability, smooth operation, and high torque output, the EIM Part-turn Manual Gear Operator features a rugged cast-iron or ductile-iron housing, precision-machined gearing, and sealed lubrication for long service life and minimal maintenance. Its ergonomic handwheel design ensures comfortable and efficient operation, even in demanding environments. The unit is available in a wide range of torque capacities and mounting configurations, making it suitable for industrial, marine, and oil & gas applications. The operator can be fitted with optional position indicators, limit switches, and declutch mechanisms when integrated with EIM electric actuators for combined manual and automated control.

Technical Specification of EIM Part-turn Manual Gear Operator

Product Type

Manual Gear Operator

Control Type

On/Off

Valve Type

Ball, butterfly, plug, triple offset

Feature of EIM Part-turn Manual Gear Operator

• Type: Quarter-turn (part-turn) manual gear operator

• Torque Range: Wide range for small to large valve sizes

• Material: Cast-iron or ductile-iron housing with corrosion-resistant finish

• Operation: Smooth gear-driven handwheel for precise control

• Mounting: ISO 5211 compliant flange options for easy valve integration

• Sealing: Fully enclosed, permanently lubricated for maintenance-free service

• Design: Compact, rugged, and suitable for indoor or outdoor installation

• Optional Accessories: Mechanical position indicators, locking devices, declutch mechanisms