Powell Fabrication & Manufacturing, Inc.

Valve Shutoff on Gas Cylinders & Ton Containers


More Information

UL-CUL Approved

Powell Valve Closure System control panels (UniPro family, 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.

Typical Installation of the MaxPro™ SG Pneumatic Valve Closure System

MaxPro SG System installed on tube trailerThe image above shows the MaxPro™ SG installed on a tube trailer. The system can also be mounted on the valves of 150 lb gas cylinders and ton containers and is compatible with numerous specialty gases and valves.

System Components

Every component of the MaxPro™ SG 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™ SG 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.

Control PanelPowell Valve Closure System control panels 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

Air Control Unit

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

 

Remote Emergency Stop Pushbutton Panel

 

Remote Emergency Stop Pushbutton Panel

 

 

Air Receiver Tank

 

 

Air Receiver Tank

 

 

Extensive engineering and field testing go into every system we produce.
That’s Reliable Engineering. That’s Powell.