User Guide

High-Capacity Rotary Valves
Product Flier
PF51.3:Vee-Ball
May 2009
8
Fisher 2052 Diaphragm Actuators
The 2052 pneumatic diaphragm rotary actuators are
compact, spring-return actuators that provide reliable
operation for the valves in this flier.
The 2052 actuator mountings conform to ISO 5211;
the actuator can be mounted directly to non-spline
shafts, such as square or double-D, allowing the
actuator to be paired with a wider range of valves to
be used for both automated on/off and throttling
applications.
This actuator features single-joint linkage with
splined-and-clamped levers for minimum lost motion
and high control accuracy.
It also features a nested spring design, which
requires no bench set, simplifying the actuator
selection process.
Options . . .
 Top-mounted handwheel,  Fisher
1078 declutchable handwheel actuator, and

actuator locking mechanism
W9589/IL
W9588-1/IL
Figure 8. Fisher 2052 Actuator
Accessories . . .  Pneumatic and
electro-pneumatic positioners,
 FIELDVUE digital
valve controllers, and
 Limit and proximity
switches.
Table 4 .Fisher 2052 Actuator Specifications
2052
ACTUATOR
SIZE
NOMINAL OPERATING
PRESSURE RATINGS
MAXIMUM CASING
PRESSURE
MAXIMUM
VALVE
BREAKOUT
TORQUE, N
m
AMBIENT
TEMPERATURE, qC
MATERIALS
Bar Psig Bar Psig
1
2-3 30-43 5.0 73 28
40 to 80
Upper Casing: Steel
Housing: Cast Iron
Diaphragm: Nitrile and nylon is
standard; silicone and polyester
low-temperature is optional
Lever: Ductile iron
Diaphragm Plate: Cast iron
4-5 60-72 5.0 73 50.8
2
2-3 30-43 5.0 73 104
4-5 60-72 5.0 73 209
3
2-3 30-43 5.0 73 270
4-5 60-72 5.0 73 565