Frequently Asked Questions

E-Pro® Electric Valve Closure System

MaxPro™ RA Valve Closure System

UniPro™ Valve Closure Systems

Powell Valve Closure Systems - Do Emergency Shutdown Systems Work?

Technical Documents about Emergency Shutdown Systems

 
Vacuum Regulators
Vacuum Regulators
Powell can design your shut off system to accommodate vacuum regulators.
 

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Frequently asked questions, technical topics, and more.

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 Ball-Type Angle Valves
 


Have a unique application? Powell may have a customized solution.

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.

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Chlorine (Cl2) Emergency Shutdown System

About Chlorine

Chlorine is a greenish yellow gas with a sharp irritating odor at standard temperature and pressure. Exposure to Chlorine can cause eye, skin, throat and lung irritation. In sufficient quantities, it can burn the lungs and result in death.

Chlorine is used in the manufacture of bleach, pharmaceuticals and for water purification. It is shipped in 150# cylinders, ton containers, both having 660 type valves, and in pressurized tank cars with angle plug valves.

Preventing an Accidental Release of Chlorine

Quickly stopping the flow of chlorine in the event of an accidental release is crucial.

Powell Emergency Valve Closure Systems are designed to prevent significant releases of hazardous gases like chlorine. In the case of an accidental release, the chlorine emergency shutdown system will close the container valve within seconds, effectively preventing further release regardless of where the leak occurs.

It is possible to prevent an accidental release of chlorine. Contact us today to discuss your specific application requirements.

Back to List of Hazardous Gases

Shutdown Systems for Various Container Sizes

Powell is the only manufacturer to offer both pneumatic or electric systems for both small to large container sizes.

For 150 lb Cylinders and Ton Containers
Electric
Pneumatic
For Large Containers Ranging from 20-Ton Bullet Tanks
to 90-Ton Railcars
Pneumatic
For Plug Type Angle Valves
For Ball Type Angle Valves