Siemens Building Technology 255-01139 1" 3-Way Mixing Valve Bronze 24V 0-10VDC Modulating Actuator

The Siemens Building Technology 255-01139 is a 1-inch three-way mixing valve with integrated electronic actuator designed for hydronic heating and cooling systems. This professional-grade valve features a durable bronze body construction and provides precise flow control for optimal temperature regulation in commercial and industrial HVAC applications.

Key Features:

• 1-inch NPT threaded connections for standard piping integration
• Three-way mixing configuration for blending hot and cold water flows
• Bronze valve body for corrosion resistance and long service life
• 10 Cv flow coefficient for high-capacity applications
• 24V AC/DC electronic modulating actuator with 0-10 VDC control signal
• Proportional control for precise temperature modulation
• Suitable for heating, cooling, and mixing applications in commercial buildings

This valve assembly is ideal for use in fan coil units, air handling units, radiant heating systems, and other applications requiring accurate water temperature control. The 0-10 VDC analog control input allows seamless integration with building automation systems and DDC controllers.