Siemens 242-00231 1/2" NPT 3-Way Mixing Valve 24V 2.5 Cv

The Siemens 242-00231 is a 1/2-inch NPT threaded 3-way mixing valve designed for hydronic heating and cooling systems. This valve operates on 24V power and features a flow coefficient (Cv) of 2.5, making it suitable for small to medium zone control applications in residential and light commercial HVAC systems.

Key Specifications:

• Port size: 1/2-inch NPT threaded connections
• Configuration: 3-way mixing valve with floating ball design
• Voltage: 24V AC/DC
• Flow coefficient (Cv): 2.5
• Valve body: Brass construction for durability and corrosion resistance
• Close-off rating: Designed for tight shut-off to prevent flow bypass

This valve is typically paired with Siemens actuators for automated control of water temperature in radiant heating, fan coil units, and other hydronic applications. The 3-way design allows for mixing of supply and return water to maintain precise temperature control. The floating ball (FB) design provides reliable modulating control with minimal wear over extended operation cycles.