Products

Complete Line of Emergency Shutdown Systems

Whatever your application, we can provide an emergency shutdown system to suit your needs. Powell is the only manufacturer that offers a full line of valve closure systems to accommodate containers of various sizes.

For 20-ton bullet tanks and 90-ton railcars:

UniPro™ Pneumatic Valve Closure Systems

For 150-lb cylinders and 1-ton containers:

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 accommodate 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 accommodate 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...

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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Emergency Shutdown Systems

Every Powell Valve Closure System, whether intended for 90 ton tank cars or 150 pound cylinders of hazardous chemicals, has undergone a complete design and testing procedure before the first system is ever sold. By doing this, we can ensure that every future system will share the same quality, reliability and durability you would expect to find in a Powell Valve Closure System.

MaxPro Valve Closure Sytem The procedure starts with a need. Our customers have indicated the need for various emergency shutdown systems aimed at the emergency closure of valves on containers of numerous different hazardous chemicals.

Once we understand the need, we gather a team of experienced professionals to determine the best path to fill the needs of our customers. During this period, we research every aspect of the particular chemical, container and valve combination in question.

Next, a design is produced in Powell’s CAD Department using the latest state-of-the-art drafting software. By utilizing the latest analysis features, we can identify the appropriate materials, dimensions and working clearances before the first prototype is built.

Still, no drawing can answer all the design and development questions that must be addressed before any new emergency valve closure system is put on the market. So, a prototype system is then fabricated. This system is then evaluated as described in following articles:

Shutdown Systems for Various Container Sizes

Powell is the only manufacturer to offer both pneumatic or electric systems for both small (150 lb cylinders, ton containers, and tube trailers) to large container sizes (20 Ton Bullet Tanks to 90 Ton Railcars).

Powell offers several brackets designed to adapt to a variety of valve types, making the systems compatible with an extensive list of hazardous gasses. Powell can design, engineer and test prototype brackets upon request.

For more information about the valve closure system that will work in your application, reference the following matrix: