Spirax-Sarco 55227 2 Inch Npt Pressure Regulator 25Seriesmain Valve E

The Spirax-Sarco 55227 is a 2-inch NPT pressure regulator and the principal valve component of the 25 Series product line. This valve regulates the steam output in a range of HVAC and industrial uses. This is accomplished with a pilot-operated system, in which a different pilot unit senses the downstream pressure and modifies the position of the main valve correspondingly. This keeps the pressure output constant even when the upstream supply varies. It guarantees constant pressure for devices such as sterilizers.It keeps the condensate return systems and boiler feedwater lines at the proper pressure. In processes like steam heating and humidification, it indirectly controls temperature by adjusting steam pressure.