The Samson make Type 41-23 self-operated universal pressure reducing regulator is a standard size regulator (1/2" - 4") designed to work in all general industrial applications. A pressure reducing valve is used for controlling the downstream pressure (p2) to an adjusted set point. The design of a pressure reducing regulator valve is to close when the downstream pressure rises above a set value.

These valves are self-operated in that the downstream pressure being controlled is tapped downstream of the Pressure Reducing Valve and transmitted via a control line to the operating diaphragm of the Type 41-23 where it is converted into a positioning force.