Emerson Fisher 1008 Data Sheet

1008 Handwheel Actuator

D100106X012

Fisherr 1008 Handwheel Actuator

The Fisher 1008 manual handwheel actuator is used in
applications that require a throttling type of control
valve that can be manually operated and set. This
actuator can be used on nearly all standard globe-style
or angle-style control valve body assemblies. No
special valve body adaptor is required for use with the
1008 actuator, so that future conversion from manual
to automatic control can be accomplished at
minimum cost.

The 1008 actuator is capable of giving precise manual
throttling control. A travel indicator mounted on the
actuator yoke provides a visual indication of valve plug
position at all times. A dial type valve plug position
indicator is also available as optional equipment.

Product Bulletin

61.8:1008
July 2012

Features

 Easy to Install and Maintain–For sizes 30, 40, and

50, the yoke is attached to the valve body with a
forged steel hammer locknut (figure 1 shows a
typical locknut attachment). For the size 80
(figureNOTAG),theyokeisboltedtothevalve
body. The handwheel mechanism on all sizes is
totally enclosed.

 Easy to Operate–Regardless of the valve plug

action, counterclockwise rotation of the handwheel
always opens the valve. In size 40 and larger, two
ball bearings are used in the handwheel assembly to
facilitate rotation. A spring loaded ball detent in the
handwheel prevents it from rotating due to
vibration.

W0590-1

Fisher 1008, Size 80 Actuator

 Accurate Valve Plug Positioning–The valve stem

does not revolve, assuring the same seating surface
witheachfullstroke.Also,theyokeconstruction
ensures that the force required to turn the
handwheel cannot be transmitted to the valve
body. Sizes 30, 40, and 50 actuators can be
furnished with a Tejax Model A35 valve position
indicator (figure 2). This indicator enables you to
turn the handwheel to the desired position without
guesswork. The dial on the indicator is divided into
turns and fractions of turns so that you can return to
a predetermined valve setting quickly and easily.

www.Fisher.com

Product Bulletin

61.8:1008
July 2012

Specifications

1008 Handwheel Actuator

D100106X012

Available Configuration

Manual-only handwheel actuator for use with
sliding-stem valves

Actuator Size

See table 1

Stem and Yoke Boss Diameters

See table 1

Maximum Stem Travel

See table 1

Maximum Usable Thrust

See table 1

Handwheel Rotation

Clockwise handwheel rotation closes the valve
For sizes 30, 40, and 50:
for push-down-to-close;

J Left hand screw assembly

J Right hand screw

assembly for push-down-to-open valve
For size 80: Handwheel assembly is reversible so that
it can be arranged for clockwise-to-close rotation.

Maximum Handwheel Force

See table 1

Handwheel Revolutions per Inch of Stem Travel

See table 1

1. When a Tejax indicator is used, the actuator must beinstalled ina horizontal position.

Construction Materials

Sizes 30, 40, and 50:
Handwheel:
Size 30: Ductile Iron
Sizes 40 and 50: Cast Iron

Yoke: Ductile Iron
Acme Power Nut: Stainless Steel (Not used on Size 30)
Acme Power Screw:

Size 30: Stainless steel
Size 40 and 50: Aluminum Bronze
Size 80:

Handwheel: Cast Iron
Yoke: Cast Iron
Worm Gear: Phosphor Bronze
Worm Shaft: Steel
Stem Screw: Steel

Approximate Weight

Size 30: 6.4 kg (15 lb)
Size 40: 15.9 kg (35 lb)
Size 50: 20.4 kg (45 lb)
Size 80: 45.4 kg (100 lb)

Options

J Sizes 40 and 50: Set screw to permit locking

handwheel in place

J Sizes 30, 40, and 50: Tejax Model A35 valve stem

position indicator

(1)

.

Indicator dial calibrated in turns and fractions of turns

Table 1. Actuator Size Selection and Specifications

ACTUATOR

SIZE

30 54 10 7340 173.5 19 0.3

40 71 13 13122 160 51 0.3

50 90 19 29581 276 51 0.3

80 127

30 2-1/8 3/8 1650 39 0.75 8

40 2-13/16 1/2 2950 36 2 8

50 3-9/16 3/4 6650 62 2 8

80 5

1. For S31600stem at 38_C (100_F).

2. Alternate 102mm (4 inch) travel construction is available.

2

BOSS SIZE STEM DIAMETER

mm mm N N mm

25 50042 423
32 75620 623

Inch Inch Lbf Lbf Inch

1 11250 95

1-1/4 17000 140

MAXIMUM

USABLE THRUST

MAXIMUM FORCE ON

(1)

HANDWHEEL

MAXIMUM

TRAVEL

(2)

76

(2)

3

REVOLUTIONS

PER mm OF

TRAVEL

0.4

REVOLUTIONS PER

INCH OF TRAVEL

10