Industrial Grade Pneumatically Actuated Iris Valve is actuated by 360 degree pneumatic rotary pneumatically actuated valve actuator. The Iris Valve is available in sizes from 6" to 18". The Iris Valve has diaphragms made using quality grade polyurethane. The Industrial Grade Pneumatically Actuated Iris Valve has the feature of easy operation, light weight and is easy to clean and maintains.