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Typical Installation of the MaxPro™
SG Pneumatic Valve Closure System
The image above shows the MaxPro RA installed on chlorine ton
containers. The system can also be mounted on the valves of 150 lb gas
cylinders and is compatible with numerous compressed gases.
System Components
Every component of the MaxPro™ RA Pneumatic Valve Closure System is engineered
to be more versatile, efficient, and reliable than alternative shutdown systems
on the market. The system includes the actuator, air control unit, control panel,
mounting bracket, and air supply hose.
Maximum Control
The MaxPro™ RA Control Panel automatically activates the actuator to close
the valve in the event of a gas leak, 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. A single control panel
can activate up to eight container-mounted actuators to close all eight valves —
simultaneously.
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 engineering
for further information.
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
additional corrosion protection.
The included 6-foot air supply hose has a safety swing coupling to ensure a secure
connection between actuator and gas supply, while helping to prevent kinks or tangles
in the hose.
Air Control Unit

The air control unit supplies the proper amount of clean, pressurized air to the
system.

Remote Emergency Stop Pushbutton Panel
Air Receiver Tank
Extensive engineering and field testing go into every system we produce.
That’s
Reliable Engineering. That’s Powell.