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UniPro™ LTR (Low Torque, Reversible) Pneumatic Emergency Valve Closure System
Avoid production slowdowns, operator injury, or lengthy and expensive environmental
cleanups by stopping dangerous chemical leaks with the UniPro™ LTR Pneumatic
Valve Closure System. The only low-torque, reversible emergency shutdown technology
designed for 20-ton bullet tanks to 90-ton railcars, this patent-pending system
prevents reportable releases of pressurized hazardous gases at the source. Like
the UniPro™ LT, the UniPro™ LTR is specifically designed for "low-torque"
valves to prevent damage to the valve seat. Plus, the UniPro™ LTR is easily
reversible - allowing the operator to safely open the valves. Improve your Risk
Management Planning (RMP) scenarios with a pneumatic-powered system that not only
promises easy installation and low maintenance, but also superior performance and
UniPro™ System Components
The UniPro™ Valve Closure Family includes the
UniPro&trade Standard, UniPro™
R (Reversible), UniPro™
LT (Low Torque), UniPro LTR
(Low Torque Reversible) and
UniPro™ QT (Quarter Turn).
FOR LOW-TORQUE, PLUG-TYPE ANGLE VALVES
Designed to close a variety of low-torque, plug-type angle valves on railcars and
tank trucks. These soft-seat valves are often marked with warnings to operate by
hand only. Not intended for use on any high-torque valves that require tools to
close and seat completely.
Ideal for applications where air or nitrogen are readily available. Requires 90
psig to operate. Fail-closed design operates even if AC power or air pressure is
Easily opens valves with just a pull of the lever. Pushing the lever in the opposite
direction closes the valve. Reversible feature requires an additional air line (90
psig) and does not interfere with emergency operation mode. Designed for low-torque
Automatically responds to any alarm input, closing valves with 120 lb-ft of torque
in less than 10 seconds.
Robust motor requires no lubrication, and is encased by an aluminum cover for protection
and years of reliable service.
EASY TO INSTALL
Easily mounts to the dome wall in seconds, without tools. Can be quickly removed
from the valve handle without detaching from the dome wall to facilitate manual
valve operation. Weighs just 28 pounds.
The UniPro™ QT Pneumatic Valve Closure System has been engineered, designed,
and field-tested to ensure reliable performance while reducing installation time,
maintenance, and material cost.
Various valve adapters are available depending on your particular application (valve
handle configurations, material hazards, spark resistance), and all easily attach/detach
with a single hitch pin.
For use on containers of hydrogen chloride, vinyl chloride, monomer methyl mercaptan
and other pressurized hazardous gases.
The UniPro™ LTR Pneumatic Valve Closure System is engineered to be the most
versatile, efficient, and reliable unit on the market. The system includes the actuator,
control panel, air control unit, and air supply hose.
The UniPro™ LTR is designed to stand alone as a complete system or to integrate
with existing unloading components. The included air supply hose has a safety swing
coupling to ensure a secure connection between actuator and gas supply.
Designed for Durability
The actuator is constructed of aircraft-quality aluminum and high-grade carbon and
stainless steels for maximum service life. A two-step polyurethane coating provides
The UniPro™ Control
Panel automatically activates the actuator to close the valve in the event
of a gas leak, car movement, fire alarm, seismic event, security breach, process
shutdown, or other monitored condition. You can also manually activate the system
by depressing the emergency stop button on the panel.
Air Control Unit
The air control unit supplies the proper amount of clean pressurized air to the
system. Available in two sizes to operate up to six UniPro™ actuators simultaneously.
The UniPro™ Pneumatic Valve Closure System is engineered to be the most versatile,
efficient, and reliable unit on the market. The system includes the actuator, control
panel, air control unit, and air supply hose.
The UniPro™ name represents a whole family of pneumatic actuators for railcar
and tanker applications, including the standard, reversible and low-torque models,
all designed for plug-type valves, plus a quarter-turn model specifically designed
for ball-type valves. The control panel, air control unit, and all optional system
components work with any of our pneumatic actuators.
UL - CUL Approved
Powell Valve Closure System control panels (UniPro™, MaxPro™ RA &
E-Pro®) are listed by Underwriters Laboratory to UL 508A for Enclosed Industrial
Control Panels. Panels are listed by Underwriters Laboratory bearing the UL &
CUL mark for use in the United States and Canada markets. In applications where
a CSA listed control panel in Canada is required, please
contact Powell for further information.