Fisher® 10770 pages

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1077 Handwheel Actuator

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D101625X012

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Product Bulletin

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61.8:1077

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July 2012

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Fisher® 1077 Manual Handwheel

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Rotary Actuator

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Fisher 1077 manual-only handwheel actuator is for use

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with rotary-shaft valves such as the 9500 butterfly

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valve; 8532, 8560, and 8580 eccentric disc valves;

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VI50, V200 and V300 Vee-Ball ™ valves; V250 valves;

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and CV500 and V500 valves. Figure 1 shows the

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gearbox of the actuator. In this actuator, torque is

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transmitted from the handwheel through the

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handwheel input shaft to a worm and drive sleeve gear

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(sector) with splined bore. The worm and drive sleeve

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gear multiply the torque and transmit it to a splined

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valve shaft or splined stub shaft. The size 10-KE:6

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actuator additionally has a spur gear reduction drive

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for increased torque capability.

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W8176-1

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Fisher 1077 Handwheel Actuator

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Features

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■ Easy to Install and Maintain—Splined valve shaft

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mates directly with the drive gear sleeve, reducing

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the number of parts required and simplifying

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installation and maintenance.

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■ Easy to Operate—Handwheel rotation direction

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required to open the valve disc or ball is marked on

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the handwheel; the rotation indicator is marked in

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bold print at the open and closed positions and with

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bold incremental lines to indicate the valve disc or

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ball position.

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■ Consistency of Operation—When installed

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according to instructions, clockwise handwheel

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rotation closes the valve in all applications.

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■ Accurate Valve Disc or Ball Positioning—Travel stops

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can be adjusted and locked in place to provide

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accurate disc or ball positioning at closed

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(0-degree) and open (90-degree) positions. Travel

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stops for 60-degree operation may be used to

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establish a disc or ball closing stop at any angle

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Figure 1. Gearbox Subassembly

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between 0 and 30 degrees and/or to establish a disc or

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ball opening stop at any angle between 60 and 90

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degrees. This option is available on sizes 2-KE and 7-KE

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as a set screw change. For sizes 0-KE, 6-KE, 9-KE, and

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10-KE:6, a different actuator is required when

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changing from 90-degree to 60-degree ball rotation.

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FISHER

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www.Fisher.com

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EMERSON

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Process Management

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