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Electric Shut Off Systems for Small Containers
Pneumatic Shut Off Systems for Small Containers
Pneumatic Shut Off Systems for Large Containers with Plug-Type Angle Valves
Pneumatic Systems for Large Containers with 1/4 Turn Ball-Type Angle Valves
 


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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.

Powell Durability Testing

Do You Have a Reliable Shutdown System?

Threshold Pressure and the UniPro Torque Limiting Valve Adapter for Soft Seat Valves

Available Valve Adapters for UniPro Valve Closure System

Explosion Proof Motion Detection System

Automated Shut Off Valves on Flexible Transfer Hoses: Why Mount An Emergency Valve Closure Actuator On A Tank Car Valve?

UniPro™ System Components

 

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Frequently Asked Questions About the UniPro Valve Closure Systems

Question:

My control room is quite a distance from the platform. Would I be able to activate the UniPro™ system from there?

Answer:

In the event of an emergency, the UniPro™ System will automatically respond to any alarm input, closing valves with 120 lb-ft of torque in less than 10 seconds. 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.

Due to the possible presence of stray electrical interference, the UniPro™ electrical system controls should never be more than 130 ft. (40 m) away from each other. Powell offers Emergency Stop Push Button Panels that can be mounted remotely. They should always be mounted within 130 ft (40 m) from the control panel to avoid electrical interference that could affect the operation of the system. Likewise, the UniPro™ Control Panel should always be within 130 ft (40 m) of the UniPro™ Air Control Unit. The same rule holds for gas sensors and other safeties that must send an electrical signal to the UniPro™ Control Panel.

Emergency Stop Pushbutton Panel installed outside of control room
UniPro™ Emergency Stop Pushbutton Panel Installed Outside of Control Room

UniPro Installed on Railcar
UniPro™ Installed on Railcar

E-Stop Remote Pushbutton Panel Installed on Stairs leading to Railcar Platform
UniPro™ Remote Emergency Pushbutton Panel Installed on the staircase
leading to the railcar platform

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Richard Fortino, BSME, is Powell’s Lead Valve Closure Development Engineer. Richard is available to assist you with your technical questions by email at rfortino@powellfab.com or by calling 989.681.2158. 

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