Siemens VCI31.20 rotary valve

Siemens VCI31.20 rotary valve (4-way, DN20, kvs 6.3). Siemens VCI31.20 is a high-quality 4-way rotary (slipper) valve for precise control of heat transfer fluid flows in heating systems. The compact coupling valve with internal thread is ideal for small and medium circuits where complex hydraulics are required: mixing, diverting or switching flows in multiple directions. Why choose Siemens VCI31.20: Versatility of 4-way design — provides efficient control in complex heating schemes, allows simultaneous operation with several circuits. High flow capacity — Kvs 6.3 m³/h at DN20 is optimal for fan coil units, radiator systems, underfloor heating and small mixing units. Reliable construction — body made of durable cast iron, rotary mechanism with minimal flow resistance, working pressure PN10. Easy installation — internal thread, compact dimensions, quick compatibility with Siemens SQK.., SAL.., SQL.. and other actuators. Durability and energy efficiency — designed for closed circuits with low-temperature hot or chilled water, provides precise control and reduced energy consumption. Main technical specifications: Model: VCI31.20 Type: 4-way rotary valve (slipper valve) Diameter: DN20 Flow capacity: Kvs 6.3 m³/h Pressure: PN10 (1000 kPa) Connection: internal thread (coupling) Medium temperature: -20...+130°C (depending on actuator) Application: heating, ventilation and air conditioning systems in residential, commercial and administrative buildings. Siemens VCI31.20 is German reliability and engineering precision in every element. The valve guarantees stable system operation, comfortable indoor climate and significant resource savings over many