Powell Fabrication & Manufacturing, Inc.

Actuators for Various Cylinder, Container, and Railcar Valves




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.

Emergency Shutdown Systems for Hazardous Gases

Powell Valve Closure Systems are suitable for use with hazardous gases such as chlorine, ammonia, sulfur dioxide and more...

Vacuum Regulators

Powell can design your valve closure system to accommodate vacuum regulators. More...

Gas Detection Systems

Powell recommended gas detection systems More...

Gas Scrubber Systems

Powell offers a variety of equipment and emergency gas scrubber systems. More...

FAQ about Electric Valve Closure Systems for 150 lb Cylinders and Ton Containers

How much power is required? How does it mount on the valve? Can it accomodate a vacuum regulator (chlorinator)? How does it detect a leak? More...

FAQ about Pneumatic Valve Closure Systems for 150 lb Cylinders and Ton Containers

How much air pressure is required? How does it mount on the valve? Can it accomodate a vacuum regulator (chlorinator)? How does it detect a leak? More...

FAQ about Pneumatic Valve Closure Systems for Railcars and Bullet Tanks

How much air pressure is required? What if the gas I service is combustible? My process automatically shuts down in a leak. Why would I need the UniPro? More...

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Electric and Pneumatic Actuators for Various Cylinder, Container, and Railcar Valves

Powell is the ONLY manufacturer to offer both electric and pneumatic emergency shutdown systems for compressed gas cylinders and container sizes including 150 lb cylinders, ton containers, 90-ton railcars, bullet tanks, tankcars, and tube trailers.  

Powell Valve Closure Systems are superior to any other emergency shutdown system available on the market. Powell offers several brackets designed to adapt to a variety of valve types, making the systems compatible with an extensive list of hazardous gases.  Powell can design, engineer and test prototype brackets upon request.

Cylinder Actuators for Valves on 150 lb Gas Cylinders and Ton Containers

150 lb Cylinder Valves, Ton Container ValvesPowell offers both electric and pneumatic emergency shutdown systems for compressed gas cylinders ranging from 150 lb to one ton. Powell Valve Closure Systems are unique from any other emergency shutdown system available on the market in that the actuator mounts on the valve body, not on the yoke.   Powell's E-Pro (Electric) Valve Closure System and MaxPro RA (Pneumatic) Valve Closure Systems are compatible with an extensive list of valves found on 150lb cylinders and ton containers.  These include but are not limited to:

Applicable to a variety of compressed cylinders, valve designs and hazardous chemicals, the systems have a unique mounting bracket that can be mated to any of several available valve adapters. More...

Pneumatic Actuators for Valves on 20 Ton Bullet Tanks, 90 Ton Railcars, and Tankcars

UniPro Family

Powell Valve Closure Systems for large containers ranging from 20-Ton bullet tanks to 90-Ton railcars.  The Powell UniPro Standard, R (Reversible), LT (Low Torque), LTR (Low Torque Reversible), and QT (Quarter Turn) are pneumatic systems compatible with many valve types found on 20 ton bullet tanks, 90 ton railcars, and tank cars including but not limited to:  

  • Midland Valve A 713
  • Midland Valve A 718