Powell Fabrication & Manufacturing, Inc.

Compressed Gas Safety - Automatic Shutdown Systems




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.

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...

Versión en Español

Valve Shutoff (Shutdown) Systems for 150 lb Cylinders - One Ton Containers

Powell Emergency Valve Closure Systems are suitable for use with many pressurized hazardous chemicals that are shipped in gas cylinders or ton containers.  These include but are not limited to:

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

Shutdown Systems for Various Container Sizes

Powell is the only manufacturer to offer both pneumatic or electric systems for 150 lb Gas Cylinders, Ton Containers, Railcars, Tank Cars, and Bullet Tanks.