Emergency Shutdown Systems

EPro electric valve closure system

for 150 lb Gas Cylinders, Ton Containers, & Tube Trailers

Powell is the only valve closure manufacturer to offer both an electric and a pneumatic system for 150 lb gas cylinders and ton containers. In addition, Powell offers a pneumatic system for specialty gases contained in tube trailers. Powell Valve Closure Systems are superior to any other emergency shutdown system available on the market and can be integrated within your existing compressed gas storage room offering you the most reliable protection against releases of hazardous gases.

E-Pro® Electric Valve Closure System

Uses standard 120-volt AC power. Ideal for smaller plants or remote facilities that do not have compressed air or nitrogen required by pneumatic systems. Designed for both 1-ton containers and 150 lb cylinders. Unique mounting bracket easily attaches and detaches from the valve stem in seconds, without tools. Click here for more information.

MaxPro™ RA Pneumatic Valve Closure System

Ideal for applications where air or nitrogen is readily available. Fail-closed design operates even if AC power or air pressure is lost. Requires 90 psig. Designed for both 1-ton containers and 150-lb cylinders. Unique mounting bracket easily attaches and detaches from the valve stem in seconds, without tools. Click here for more information.

MaxPro RA pneumatic valve closure system
MaxPro SG pneumatic valve closure system
MaxPro™ SG Pneumatic Valve Closure System
for Specialty Gas Closure System in 150 lb Cylinders, Ton Containers, & Tube Trailers

Designed for 150 lb Cylinders, Ton Containers, and Tube Trailers. Applicable to a variety of valve designs and speciality gases, the system has a unique mounting bracket that can be mated to any of several available valve adapters. For use on anhydrous hydrogen chloride, dichlorosaline, trichlorosaline, silicon tetrachloride, and other pressurized hazardous gases. Click here for more information.