WTR Series
Product Capabilities and Features
WTR Installation & Maintenance Manual 330-15000 • Revision A • August
2 Product Capabilities and Features
Designed to operate 90° applications WTR series worm gear actuators are designed to operate
valves or other applications that require 90° operation such as butterfly, ball, and plug valves.
Can be hand-operated with a handwheel or 2" nut, or electrically operated with an added
motorized actuator.
Designed for use in Commercial service and AWWA C504-87 and 540-93 standards The
Commercial service series uses a ductile iron worm gear with a hardened steel worm. The
AWWA service series uses an alloy bronze worm gear and hardened steel worm.
The WTR has flexibility built into its design
Removable Splined Adapter to accommodate simple installation The actuator has a drop-in
splined adapter to allow easy incremental adjustments when aligning the valve stem keyway
and the actuator positions.
Removable/Interchangeable Mounting Base for easy input shaft position and mounting base
changes for Units WTR-3 through 150
The handwheel/input shaft assembly position is
changed by unbolting the housing cover and baseplate from the WTR main housing,
inverting the housing 180°, and bolting the cover and the baseplate back to the WTR main
housing.
a WARNING: Always isolate valve before reversing assembly position.
The WTR accommodates other components such as spur gear attachments and electric actua-
tors. For WTR-3 through 150, combinations of these components can be added without
removing the input shaft assembly.
O-ring sealed and permanently lubricated for reduced maintenance.
2.1 Initial Inspection and Storage Instructions
a WARNING: Read this Installation and Maintenance Manual carefully and
completely before attempting to store the actuator. If an electric actuator is attached
to the WTR manual actuator, be aware of the electrical hazards.
2-1
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