Powell Fabrication & Manufacturing, Inc.

Pneumatic Valve Shutdown - Actuator Torque




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

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.

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How much torque do the UniPro™ Actuators deliver?

Answer:

There are four different UniPro™ actuators for different kinds of valves.

The UniPro™ Standard delivers 120 lb-ft of torque to traditional ACF angle plug valves. With the Torque Limiting Valve Adapter installed, it delivers only 30 lb-ft of torque.

The UniPro™ R is reversible. It also delivers 120 lb-ft of torque in both opening and closing directions. It is intended to assist operators in the manipulation of ACF angle plug valves.

The UniPro™ LT  (reversible is available) delivers only 30 lb-ft of torque to operate the soft seat angle plug valves that require hand operation only.

The UniPro™ QT (Quarter Turn) is designed for "quarter-turn" ball-type valves. The powerful actuator automatically responds to any alarm input, closing valves with 120 lb-ft of torque in less than 10 seconds.

UniPro Systems

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for 150 lb & ton Containers

for Railcars & Bullet Tanks

Other Safety Systems


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