Description
The Siemens 25702039 MT Series 2-Way Pneumatic Valve Assembly is a fluid control component used to regulate water or steam flow in commercial heating and cooling applications. Featuring a 1/2″ FXUM connection, ANSI 250 pressure class rating, 2.5 Cv flow capacity, and 3–8 PSI pneumatic operating range, this valve assembly is commonly installed in air handling units, heat exchangers, and hydronic control systems. Its role within the HVAC system is to respond to control signals for accurate modulation of fluid circulation, maintain temperature stability, balance system operation, and controlled energy distribution throughout the facility.
