Johnson Controls V48AC-2 Three-Way, Pressure-Actuated Water Regulating Valve. R-22,145/190 3/4"

The Johnson Controls V48AC-2 is a three-way, pressure-actuated water regulating valve designed for use in hydronic heating and cooling systems. It features a compact, cast brass body with a 3/4- pipe thread (NPT) connection. Internally, a pressure-sensing element with a 30- capillary tube monitors system pressure. When the water pressure falls below a designated setpoint (between 145 and 190 psi for the V48AC-2), the valve automatically opens, allowing more hot or cold water to flow through the system. Conversely, when pressure reaches the setpoint, the valve closes, regulating water flow and maintaining consistent system temperature. This valve is ideal for applications requiring precise control of water flow based on pressure fluctuations. It's commonly used in chilled water systems, heating boilers, and heat exchangers. Benefits of the V48AC-2 include improved system efficiency by ensuring optimal water circulation, protection of equipment from pressure surges, and the ability to maintain desired comfort levels within a building.