Control valve Siemens VVG44.40-25

Siemens VVG44.40-25 two-way control valve — a reliable seat valve for heating and cooling systems. Precise control and high tightness in engineering systems. Siemens VVG44.40-25 is a high-quality 2-way (straight-through) seat control valve with external thread, designed for heating, ventilation, and air conditioning (HVAC) systems. With nominal diameter DN40 and flow capacity Kvs 25 m³/h, it is ideal for medium heat substations, boiler rooms, fan coil units, underfloor heating systems, supply ventilation, and other hydraulic circuits. German Siemens Acvatix series quality ensures precise flow control, excellent tightness, and long service life. Main technical specifications: Valve type: 2-way seat control valve (straight-through); 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; Leakage: 0…0.02% of Kvs; Application: closed circuits with water and water-glycol solutions. Perfectly compatible with Siemens actuators of SFA, SQS, SAS series and others with 5.5 mm stroke. Advantages of Siemens VVG44.40-25: High control accuracy — ensures stable temperature and energy savings. Excellent tightness — minimal leakage (class A) for increased system efficiency. Durability — bronze body is corrosion-resistant, valve operates without maintenance for many years. Easy installation — external thread allows quick installation without welding. Versatility — suitable for heating, cooling, and air conditioning.