Fisher™ 1077 Manual Handwheel Actuator
Fisher 1077 manual-only handwheel actuators are intended for use with rotary-shaft valves. Torque is transmitted from the handwheel through the handwheel input shaft to a worm and drive sleeve gear (sector) with splined bore. The worm and drive sleeve gear multiply the torque and transmit it to a splined valve shaft or splined stub shaft.
The Fisher™ 1077 Manual Handwheel Actuator, designed by Emerson, is a rugged and dependable manual actuator engineered for linear motion control valves that require manual positioning or emergency override. Built for reliability, precision, and safety, the 1077 actuator provides operators with smooth, positive control of valve travel using a handwheel-driven screw mechanism that directly converts rotational motion into linear stem movement.
The Fisher 1077 actuator is ideal for applications where manual operation, backup control, or fail-safe functionality is needed—particularly in environments where power or air supply may be unavailable. Its durable mechanical design ensures consistent performance in demanding process conditions, while its simple, compact configuration allows for easy installation and maintenance.
Constructed from corrosion-resistant materials, the 1077 actuator provides long service life and dependable operation even in outdoor or corrosive atmospheres, making it well-suited for use in refineries, chemical plants, power generation facilities, and general industrial systems.
Technical Specification of Fisher™ 1077 Manual Handwheel Actuator
- Actuation
- Rotary, Manual
- Certifications
- PED, CUTR, ATEX
- Control Type
- On/Off, Positioning, Positioning
- Power Source
- Manual
- Valve Type
- Ball Valve, Butterfly Valve, Eccentric Plug Valve, Triple Offset Valve
- Other Configurations
- Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.
Feature of Fisher™ 1077 Manual Handwheel Actuator
- Splined valve shaft mates directly with the drive gear sleeve, reducing the number of parts required and simplifying installation and maintenance.
- Handwheel rotation direction required to open the valve disk or ball is marked on the handwheel; the rotation indicator is marked in bold print at the open and closed positions and with bold incremental lines to indicate the valve disk or ball position.
- When installed according to instructions, clockwise handwheel rotation closes the valve in all applications.
- Travel stops can be adjusted and locked in place to provide accurate disk or ball positioning at closed (0 degree) and open (90 degree) positions. Travel stops for 60 degree operation may be used to establish a disk or ball closing stop at any angle betw