Powell Fabrication & Manufacturing, Inc.

Sherwood USA Chlorine / Sulfur Dioxide Valve




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.

Valve Closure Systems

Compressed Gas Valves

Various Cylinder, Ton Container, and Railcar Valves compatible with both Electric and Pneumatic actuators.  More...

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Sherwood USA Chlorine / Sulfur Dioxide Valve Sherwood USA Chlorine / Sulfur Dioxide Valve

Sherwood USA valves are commonly used on pressurized containers of chlorine or sulfur dioxide.

Powell Valve Closure Systems (Shut Off Systems) are compatible with Sherwood USA Valves and with most other valves found on ton containers or 150 lb cylinders containing pressurized hazardous gases.

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.


for 150 lb Cylinder, Ton Containers, & Tube Trailers

for Railcars & Bullet Tanks

Other Safety Systems


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