Angle seat valves are 2-position valves with a built in pneumatic actuator. The actuator can be spring return or double acting. The obstructer is a plug that enters the valve at an angle to sit in an angled seat molded into the valve’s flow path. The plug gets retracted almost completely out of the flow path when open. This factor makes angle seat valves the highest flow fast-acting valves with the lowest pressure drop. In many on/off applications, angle seat valves are a perfect substitute for a ball valve. They are faster acting, less costly, and longer lasting.
Angle valves are particularly suited for use on low pressure steam applications below 150 PSI.