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Fisherr 1079 Declutchable Manual Actuator

The 1079 manual actuator is a declutchable unit for

manual operation of keyed or square shaft control

valves and equipment that use a Hytork actuator. The

1079 manual actuator mounts directly on the Hytork

actuator and can be engaged to allow manual

operation of the valve when the power actuator is not

in use or disengaged to allow automatic operation of

the valve by the power actuator. The mechanism used

allows manual actuator engagement at any point of

poweractuatorrotation.

Features

 Direct Attachment to the Power Actuator-- Direct

mounting to the actuator housing simplifies

installation and eliminates the need for yokes and

other brackets.

 Engage Manual Actuator At Any Point of Rotation--

A lever-operated eccentricbearingsupportonthe

input shaft allows engagement of the worm gear

with the sector at any point of rotation.

W6214

Fisher 1079 Manual Actuator Mounted on a

Hytork Actuator and A41 Valve

 Positive Operation-- The disengagement lever is

held in both the engaged and disengaged positions

by a spring-loaded pin, which must be released

before the lever can be moved. This reduces the

possibility of inadvertent or accidental operation. In

addition, stop-pins at the fully engaged and fully

disengaged positions provide positive limits for

lever travel.

1079 Manual Actuator

D500209X012

Product Bulletin

22.2:1079

January 2013

1 2 3 4 5 6 7 8

Inhaltsverzeichnis

Seite 1 - Features

www.Fisher.comFisherr 1079 Declutchable Manual ActuatorThe 1079 manual actuator is a declutchable unit formanual operation of keyed or square shaft co

Seite 2 - Product Bulletin

1079 Manual ActuatorD500209X012Product Bulletin22.2:1079January 20132SpecificationsAvailable ConfigurationsDirect acting; see Handwheel RotationManual

Seite 3 - 1079 Manual A ctuator

1079 Manual A ctuatorD500209X012Product Bulletin22.2:1079January 20133Table1.ActuatorSizeSelectionandSpecifications for Keyed Shaft Valves (Fisher A31

Seite 4

1079 Manual ActuatorD500209X012Product Bulletin22.2:1079January 20134Table2.ActuatorSizeSelectionandSpecifications for Valves (Fisher A41)ACTUATORSIZE

Seite 5

1079 Manual A ctuatorD500209X012Product Bulletin22.2:1079January 20135Table3.ActuatorSizeSelectionandSpecifications for Square Shaft Valves (Fisher A1

Seite 6

1079 Manual ActuatorD500209X012Product Bulletin22.2:1079January 20136Figure 2. Dimensions (also see table 4)13B8871-BA6259JHW MKWNEENGAGEDNDDISENGAGE

Seite 7

1079 Manual A ctuatorD500209X012Product Bulletin22.2:1079January 20137Table 4. Dimensions (also see figure 2)1079ActuatorSize1032ActuatorSizeJ HW M D

Seite 8 - Ordering Information

1079 Manual ActuatorD500209X012Product Bulletin22.2:1079January 20138Ordering InformationWhen ordering, specify:1. Manual actuator size2. Handwheel si