Emerson Process Management 1051 User Manual

1051 & 1052 H & J

Form 5587
November 2006

3

Dm

40

9.5

12.7
15.9
19.1
25.4

3/8
1/2
5/8
3/4

1

52
69

114
207
468

460
610

1010
1830
4140

60

19.1
25.4
31.8
38.1
50.8

3/4

1

1-1/4
1-1/2

2

207
468

1030
1360
2650

1830
4140
9110

12,000
23,430

70

(1)

31.8
38.1
50.8

1-1/4
1-1/2

2

(2)

1030
1360
2650

9110

12,000
23,430

1. Type 1052 actuator only.
2. Coupling supplied for mating with either 44.5 or 50.8 mm (1-3/4 or 2-inch) keyed shaft.

This manual provides installation, adjustment,
operation, maintenance, and parts ordering
information for the Type 1051 (sizes 40 and 60) and
Type 1052 (sizes 40, 60, and 70) diaphragm rotary
actuators with H and J mounting adaptations (see
figures 1 and 2). Also, this instruction manual
provides information for the optional top-mounted
handwheel, and both the optional up and down
travel stops. Instructions for the control valve body,
the positioner, accessories, and other sizes or
constructions of this actuator are covered in
separate manuals.

Do not install, operate, or maintain a Type 1051 or
1052 actuator without first 

D being fully trained and

qualified in valve, actuator, and accessory
installation, operation, and maintenance, and 

D

carefully reading and understanding the contents of
this manual. If you have any questions about these
instructions, contact your Emerson Process
Management sales office before proceeding.

The Type 1051 and 1052 diaphragm rotary actuators
are pneumatic spring-return actuators for use with
rotary-control valves and other equipment. The Type
1051 actuator can be used for on-off service, or it
can be used for throttling service when equipped
with a valve positioner. The Type 1052 actuator can
be used for on-off service, or it can be used for
throttling service when equipped with or without a

valve positioner. The Type 1052 actuator spring is
adjustable.

The H mounting adaptation permits the actuator to
be used with equipment other than Fisher

r valve

bodies. The mounting brackets and couplings for
rotary actuation are user-provided. This mounting
adaptation includes a flat-surface mounting plate
that is drilled and tapped for attaching the
user-provided bracket. Cap screws for attaching the
bracket are provided. H mounting also includes an
output shaft (with milled flats) to provide the Double
D rotary output either directly or through a
user-provided coupling. Output shaft diameters and
torque limits are listed in table 2. Dimensional
information for the mounting plate and output shaft
are shown in figures 4, 5, and 6.

The J mounting adaptation permits the actuator to
be used for rotary actuation of Fisher keyed-shaft
butterfly valve bodies and other keyed-shaft
equipment. This mounting adaptation uses the
standard butterfly valve mounting bracket and
provides an output shaft with an attached coupling
for keyed equipment shafts. Coupling sizes and
torque limits are listed in table 3. Dimensional
information for the mounting bracket and stub shaft
coupling is shown in figures 4, 5, and 7.

Additionally, a top-mounted handwheel can be
applied for infrequent service as a manual
handwheel actuator. For more frequent manual
operation, a side-mounted handwheel actuator is
available. Also, an adjustable up travel stop can be
added to limit the actuator stroke in the upward
direction, or an adjustable down travel stop can be
added to limit actuator stroke in the downward
direction.