Spirax-Sarco 55222 Pressure Regulator 1/2" NPT Series 25

The Spirax-Sarco 55222 Pressure Regulator is a 1/2 inch NPT Series 25 pressure regulator that is used to regulate and maintain a constant downstream pressure. It controls the flow of systems like steam and hydronic lines in HVAC systems enabling constant operation of the equipment attached. It operates by automatically regulating an internal valve as pressure changes to keep the pressure at a desired level. It is mounted on the line of the piping at a control point. This assists in maintaining constant pressure, ensures that system components are safe, and ensures that the performance is reliable when the load conditions are different.