Poland Shaft

Poland Shaft

Although they are less popular than sliding-stem control valves, a wide range of rotary-shaft control valves, including ball valves, butterfly valves, and rotary-plug valves, are also available. The components of a typical rotary-shaft control valve include the valve body and the trim. An important advantage of rotary control valves over sliding-stem designs such as the globe valve and diaphragm valve is a virtually obstruction less path for fluid when the valve is wide-open.