Control valve Siemens VXF42.40-25

Siemens VXF42.40-25 three-way control valve — flanged seat valve PN16 for medium HVAC systems. Reliable and precise flow control in professional engineering systems. Siemens VXF42.40-25 is a high-quality 3-way seat control valve (mixing/diverting) with flanged connection of the Acvatix series. With nominal diameter DN40 and flow capacity Kvs 25 m³/h, it is ideal for heating substations, boiler rooms, fan coil systems, chillers, supply and exhaust ventilation and other medium-power hydraulic circuits in commercial, administrative and industrial facilities. German quality Siemens guarantees high tightness, precise control and exceptional durability when working with water, water-glycol solutions and brines in closed circuits. Main technical specifications: Valve type: 3-way seat (mixing/diverting); Nominal diameter: DN40; Flow capacity: Kvs 25 m³/h; Working pressure: PN16 (up to 16 bar); Medium temperature: -10°C to +150°C; Connection: flanged according to ISO 7005; Body material: high-strength grey cast iron EN-GJL-250; Stroke: 20 mm; Control characteristic: equal percentage (straight-through), linear (bypass); Leakage: 0…0.02% of Kvs (main port), 0.5…2% (bypass); Application: closed heating, cooling and air conditioning systems. Perfectly compatible with Siemens SAX, SKD, SKB series actuators and others with 20 mm stroke. Advantages of Siemens VXF42.40-25: Increased strength — PN16 allows use in systems with high working pressure. Excellent tightness — minimal leakage ensures maximum energy efficiency and safety. High performance — optimal Kvs for efficient distribution of significant flows.