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Vacuum Regulators
Powell can design your shut off system to accommodate vacuum regulators. |
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Frequently asked questions, technical topics, and more. 
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Have a unique application? Powell may have a customized solution.

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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. |
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Shut Down Systems for
1,3-Butadiene (C4H6)
About 1,3-Butadiene
1,3–Butadiene is a flammable, colorless toxic gas with a pungent odor similar to that of gasoline at standard temperature and pressure. It is considered a ‘probable carcinogen’ by the Environmental Protection Agency. Breathing very high levels of 1,3-butadiene for a short time can cause central nervous system damage, blurred vision, nausea, fatigue, headache, decreased blood pressure and pulse rate, and unconsciousness.
Approximately 75% of all 1.3–Butadiene is used in the production of synthetic rubber. It is also used in making plastic. It is shipped in pressurized tank cars.
1,3-Butadiene Valve Closure Systems (Shutdown Systems)
Powell Emergency Valve Closure Systems are designed to prevent significant releases of hazardous gases like 1,3-Butadiene. In the case of an accidental release, the emergency valve closure system will close the valves in 10 seconds or less, effectively preventing further release from the container.
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.
Container Size |
Pneumatic |
Electric |
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for 20-Ton
Bullet Tanks to
90-Ton Railcars
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UniPro™ Valve Closure Systems |
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Contact us today for more information about the full line of equipment and services offered by Powell
or visit:
www.powellfab.com |
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