صمام التحكم Siemens VXG44.40-25

Siemens VXG44.40-25 three-way control valve — a reliable seat valve for medium heating and cooling systems. Precise flow control in HVAC systems. Siemens VXG44.40-25 is a high-quality 3-way seat control valve (mixing/diverting) with external thread, designed for medium heating, ventilation, and air conditioning systems. With nominal diameter DN40 and flow capacity Kvs 25 m³/h, it is ideal for heat substations, boiler rooms, fan coil units, underfloor heating systems, and supply ventilation in commercial and residential buildings. German Siemens Acvatix series quality ensures precise control, excellent tightness, and long-lasting operation in closed circuits. Main technical specifications: Valve type: 3-way seat (mixing/diverting); Nominal diameter (DN): 40 mm; Flow capacity (Kvs): 25 m³/h; Working pressure: PN16 (up to 16 bar); Medium temperature: from +1°C to +120°C; Connection: external thread G2¼" (according to ISO 228/1); Body material: high-quality bronze CC491K (Rg5); Stroke: 5.5 mm; Control characteristic: equal percentage (straight passage), linear (bypass); Leakage: 0…0.02% of Kvs (main and bypass port); Application: water and water-glycol solutions in closed circuits. Perfectly compatible with Siemens actuators (SFA, SQS series and others with 5.5 mm stroke). Advantages of Siemens VXG44.40-25: High control accuracy — ensures stable temperature and significant energy savings. Excellent tightness — minimal leakage guarantees system efficiency and safety. Durability — bronze body is corrosion-resistant, valve requires no maintenance for years. Versatility — suitable for mixing and diverting flows in various hydraulic systems.