NEW ARRIVAL: Siemens VXF42.40-25C 3-Port Mixing Valve Now Available
Model Description
We are pleased to announce the immediate availability of the Siemens VXF42.40-25C 3-port flanged control valve, a PN16-rated mixing/diverting valve engineered for precise hydraulic control in closed HVAC and industrial circuits. Sized DN 40 with a kvs of 25 m³/h, the valve is suitable for 150–200 kW heat-exchange duties at typical ΔT = 6 K. Cast-iron EN-GJL-250 body and CrNi-steel/bronze trim resist corrosion up to 150 °C, while a 20 mm stroke matches standard 400–2 800 N Siemens SAX/SKD/SKB/SKC actuators for direct-mount installation without linkages. ISO 7005 flanges (PN 16) allow immediate drop-in replacement on existing risers, district-cooling substations and process heat exchangers .
Key Features
VXF42.40-25C delivers equal-percentage through-port and linear bypass characteristics, ensuring stable, linear control when paired with any 0–10 V or 3-point Siemens actuator. Permissible operating pressure is 1600 kPa (16 bar) and leakage rate ≤ 0.02 % of kvs—ideal for variable-flow systems with high differential pressures. Operating temperature –10 … +150 °C accommodates glycol mixtures and district-heating networks; optional ASZ6.6 stem heater maintains reliability below 0 °C. The non-repairable design guarantees long, maintenance-free service life, while CE, cULus and CRN approvals validate global deployment. Dimensions 290 × 132 × 95 mm and weight 5.8 kg suit standard plant-room handling without special rigging .
Related Models in the VXF42..C Series
The VXF42 line offers scalable capacity within the same footprint. VXF42.32-16C (DN 32, kvs 16) provides lower flow for smaller coils, while VXF42.50-31.5C and VXF42.50-40C (DN 50, kvs 31.5 / 40) cover larger duties without changing flange drilling. For 2-port applications, VVF42.40-25C supplies identical hydraulic data in a mixing configuration. All variants share 20 mm stroke (≤ DN 80), PN 16 rating and cast-iron body, enabling one-size actuator selection and unified piping layouts across 6.3 … 400 m³/h capacities .
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We are a focused industrial-automation components trader committed to delivering authentic Siemens valve solutions with speed, flexibility and technical expertise.