Ball valve Siemens VBI61.25-10

Siemens VBI61.25-10 three-way ball valve — reliable control and shut-off valve for HVAC systems. High-precision flow control in modern engineering systems. Siemens VBI61.25-10 is a modern 3-way ball valve (mixing/diverting) with internal thread, designed for heating, ventilation and air conditioning (HVAC) systems. Thanks to German Siemens quality and ball design, it provides maximum tightness, fast response and long-lasting operation even under intensive use. Ideal for automated temperature control systems where precise mixing or diverting of coolant flows is required. Key technical specifications: Valve type: 3-way ball valve (control/shut-off). Nominal diameter (DN): 25 mm. Flow capacity (Kvs): 10 m³/h. Working pressure: PN40 (up to 40 bar). Coolant temperature: from -10°C to +120°C. Connection: internal thread Rp 1" (according to ISO 7-1). Body material: high-quality DZR brass (corrosion resistant). Rotation angle: 90°. Control characteristic: equal percentage on the straight port, linear on the bypass. Application: closed circuits with water and water-glycol solutions. The valve works perfectly with rotary Siemens actuators (GMA, GCA, GEA series, etc.). Advantages of Siemens VBI61.25-10: Excellent tightness — ball mechanism provides tightness class A (virtually zero leakage). High wear resistance — brass body and high-quality seals guarantee long service life. Versatility — suitable for mixing and diverting flows in heating, cooling, fan coil units, heat substations and supply ventilation systems. Easy installation — internal thread allows quick and reliable valve installation.