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.

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.

Features

• 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