Belimo R7050R25-B3 - 3-way flanged control valve

Belimo R7050R25-B3 – technical data

3-way control valve with a regulating plug, designed for closed water systems and for controlling flow on the water side of ventilation and heating systems.

• Nominal diameter: DN 50; nominal pressure: PN 6; connection: flange in accordance with EN 1092-1/4.
• Kvs: 25 m³/h; flow through bypass B – AB: 70% of the Kvs value.
• Medium: water or water mixed with up to 50% vol. glycol; medium temperature: -10...100°C [14...212°F].
• Differential pressure Δpmax: 100 kPa; closing pressure ∆ps: 600 kPa.
• Flow characteristic: A – AB equal percentage, B – AB linear.
• Leakage: A – AB bubble-tight, leakage class A; B – AB leakage class I, 1...2% of the Kvs value.
• Rotary angle: 90°; body made of nickel-plated brass, flange made of aluminium.

For medium temperatures of -10...2°C, shaft heating or an extended valve neck is recommended. The permissible medium temperature may depend on the actuator used.