Siemens Building Technology VXP45.25-6.3 3-Port Bronze Control Valve DN25 PN16

The Siemens VXP45.25-6.3 is a 3-port seat valve with external thread, PN16 pressure rating, DN25 (1 1/4 inch) connection size, and a kvs flow coefficient of 6.3 m³/h. This valve features a bronze CC499K valve body with flat seal male threaded connections conforming to ISO 228-1, making it suitable for professional HVAC and building control applications.

Key Features:

• Bronze construction with external thread design, suitable for controlling hot and cold water in closed circuits including induction and fan coil units, small heaters, coolers, and heating circuits
• Compatible with water to VDI 2035 standards and water with anti-freeze, designed for use as mixing or 2-port valves
• Constructed with bronze body, stainless steel spindle, brass plug/seat/gland, and special EPDM rubber O-rings with 5.5mm nominal stroke
• Compatible with Siemens SSB and SSC series electromotor actuators including SSF161.05HF, SSC31, SSC61.5, SSC81, and SSC161.05HF models
• PN16 pressure class rated for ANSI Class 250 applications

Ideal for water-side terminal unit control in ventilation and air-conditioning systems within closed circuits. This valve requires an electric actuator for operation and includes a manual adjuster for setup and commissioning.