Powell Fabrication & Manufacturing, Inc.

Reversible Pneumatic Actuator




Powell is the only manufacturer to offer emergency shutdown systems with pneumatic or electric actuators for use on either small containers (150 lb. – 1 ton) or large containers (such as 90 ton railcars). Powell has taken great care to design dependable systems that are convenient to use, powerful, versatile, and most importantly, reliable. We are proud to have developed valve closure systems superior to any other shutdown system available on the market.

Frequently Asked Questions About:

Available Systems

Compressed Gas Valves

Various Cylinder, Ton Container, and Railcar Valves compatible with both Electric and Pneumatic actuators.  More...

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.

Versión en Español

Why does the UniPro™ R actuator require two air hoses?

Answer:

Because one is a dedicated air line that is pressurized all of the time. This air line provides constant pressure so the operator can use the UniPro™ to manipulate the valve position at any time. The second air line is pressurized only in an emergency. It is important that these two air lines have the same operating pressure. Therefore, we recommend that the dedicated air line be installed in the UniPro™ Air Control Unit at the point where the UniPro™ Air Receiver is attached.

UniPro R Installed

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Tank Car Fleets are Changing


for 150 lb & ton Containers

for Railcars & Bullet Tanks

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