Type 1051 & 1052 Styles H & J
2
Table 1. T
ype 1051 and 1052 Actuator Specifications
Operation
Direct Acting: Increasing loading pressure extends
the diaphragm rod out of the spring barrel
Service:
Type 1051:
For on-off or throttling service with posi-
tioner
Type 1052:
For on-off or throttling service with or
without a positioner
Actuator Sizes
Type 1051: 30, 40, and 60
Type 1052: 30, 40, 60, and 70
Maximum Diaphragm Casing Pressure
Size 30: 80 psig (5.5 bar)
Size 40: 65 psig (4.5 bar)
Size 60: 40 psig (2.8 bar)
Size 70: 55 psig (3.8 bar)
Maximum Valve Shaft Rotation
90, 75, or 60 deg with optional stops
Torque Limits (mm)
Limited by maximum diaphragm casing pressure or
tables 2 and 3, whichever is less
Stroking Time
Dependent on actuator size, rotation, spring rate,
initial spring compression, and supply pressure. If
stroking time is critical, consult the Fisher sales of-
fice or sales representative
Material Temperature Capabilities
Nitrile Diaphragm or O-Rings
(1)
: –40 to 180F
(–40 to 82C)
Silicone Diaphragm: –40 to 300F (–40 to 149 C)
Travel Indication
Graduated disk and pointer combination located on
actuator end of valve shaft
Pressure Connections
1/4 in. NPT female
Mounting Positions
See figure 7
Approximate Weights
See table 4
Additional Specifications
For casing pressure ranges and for material identifi-
cation of the parts, see the parts list
1. Nitrile O-rings are used in optional top-mounted handwheel, adjustable down travel stop, and adjustable up travel stop assemblies.
Introduction
Scope of Manual
This manual provides instructions for Styles H & J
mounting adaptations used to mount Fisher rotary ac-
tuators on other valves, or on other devices not
manufactured by Fisher. This instruction manual in-
cludes installation, adjustment, operation, mainte-
nance, and parts ordering information for the Type
1051 (sizes 30, 40, and 60) and Type 1052 (sizes 30,
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 option-
al up and down travel stops. Instructions for the con-
trol valve body, the positioner, and accessories are
covered in separate manuals. Instructions for the con-
trol valve body, the positioner, accessories, and other
sizes or constructions of this actuator are covered in
separate manuals.
Only personnel qualified through training or experience
should install, operate, and maintain this actuator. If
there are any questions concerning these instructions
contact your Fisher sales office or sales representative
before proceeding.
Description
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 ser-
vice 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 user-provided mounting brackets and cou-
plings for rotary actuation of equipment other than
Fisher valve bodies. This mounting adaptation in-
cludes 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 rotary output either directly or
through a user-provided coupling
(1)
. Output shaft
1. Actuators with H mounting and a 2-inch (50.8 mm) output shaft are supplied with a
coupling for adaption to either a 1-3/4 or 2-inch (44.5 or 50.8 mm) keyed shaft.
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