Overview of Primary Product

Valve and Actuator Manual 977
Actuators and Positioners Product Information Section
Product Bulletin V-3000
Issue Date 0496
© 1996 Johnson Controls, Inc. 1
Part No. 14-350-18, Rev. B
Code No. LIT-977250
V-3000 Pneumatic Valve Actuator
Exposed or Enclosed
The V-3000 Series Pneumatic
Valve Actuators are designed to
accurately position steam or
water valve modulating plugs in
response to a pneumatic signal
from a controller. Two models
of the V-3000 are available; the
exposed model is for installation
in a protected location and the
enclosed model is for
installation in a location where
the actuator would be subjected
to tampering. A V-9502 Valve
Positioner can be ordered
separately for use on the
exposed model only in
applications where sequential
operation is desired or
additional positioning power is
necessary; refer to the
Specifications Table for ordering
information.
Construction
Both models of the V-3000 have
a molded synthetic rubber
diaphragm design. This molded
diaphragm provides a constant
effective area throughout the
valve stem stroke. All parts are
protected by a sturdy die cast
aluminum housing. The
actuator assembly can be
removed or repositioned by
loosening a single set screw
without disturbing the rest of the
valve assembly.
Operation
With no control air pressure
applied to the diaphragm, the
valve is in the normal position.
Spring and fluid forces in the
valve combine to balance
against the diaphragm pressure.
Reducing the air pressure
permits the valve spring to
return the valve plug to its
normal position.
Mounting
Both the exposed and enclosed
V-3000 Actuators are easily field
mounted to the valve bonnet
with a single set screw. The
V-3000 Exposed Actuator can
also be ordered factory mounted
to any of the V-3000 or V-4000
Series Valves (except V-3854).
The V-9502 Valve Positioner
can also be factory mounted on
these units.
Fig. 2: Enclosed V-3000
Actuator
Fig. 1: Exposed V-3000
Actuator
Specifications