Powell Fabrication & Manufacturing, Inc.

Compressed Gas Cylinders Shutoff  & Automated Valve 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.

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...

Available Systems

Gas Detection Systems

Powell recommended gas detection systems More...

Gas Scrubber Systems

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

Sodium Hypochlorite Continuous Process

Process flow diagram illustrating how our complete continuous process systems integrate and interface with all process components including chlorine railcar valve closure systems. More Information...

Versión en Español

Valve Closure Systems for Cylinders, Ton Containers, Railcars, and Tankcars

Emergency Shutdown for 150 lb Cylinders & One Ton Containers
E-Pro Electric Valve Closure System for 150 lb Cylinders and Ton ContainersE-Pro Electric MaxPro RA Pneumatic Valve Closure System for 150 lb Cylinders and Ton ContainersMaxPro RA

Emergency Shutdown for Railcars, Tankcars, & Bullet Tanks
UniPro Pneumatic Valve Closure System for Railcars, Tankcars, and Bullet Tanks
UniPro Pneumatic 		UniPro R (Reversible) Pneumatic Valve Closure System for Railcars, Tankcars, and Bullet Tanks
UniPro R (Reversible) Pneumatic   		UniPro LT (Low Torque) Pneumatic Valve Closure System for Railcars, Tankcars, and Bullet Tanks
UniPro LT (Low Torque) Pneumatic
UniPro LTR (Low Torque Reversible) Pneumatic Valve Closure System for Railcars, Tankcars, and Bullet Tanks
UniPro LTR (Low Torque Reversible) Pneumatic 		UniPro QT (Quarter Turn) Pneumatic Valve Closure System for Railcars, Tankcars, and Bullet Tanks
UniPro QT (Quarter Turn) Pneumatic

This link will redirect you to valveclosures.com, the official Powell Valve Closure System website.


for 150 lb Gas Cylinders & Ton Containers

for Railcars & Bullet Tanks

Other Safety Systems


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