Belimo R7020R-B1 - 3-way changeover ball valve

Belimo R7020R-B1 – changeover ball valve

3-way ball valve with flanged connection for closed water systems. Designed for changeover and on/off control on the water side of ventilation and heating systems.

Key features and specifications

• Pattern: 3-way; DN 20; PN 6.
• Pipe connection: flange; Kvs 32 m³/h.
• Medium: water, water with up to 50% by volume glycol.
• Medium temperature: -10...100°C [14...212°F].
• Differential pressure: ∆pmax 100 kPa; closing pressure: 600 kPa.
• Flow through bypass B – AB: approx. 50% of Kvs value.
• Tightness A – AB: bubble-tight, leakage rate class A (EN 12266-1); B – AB: leakage rate class I (EN 1349 and EN 60534-4), max. 1% of Kvs value.
• Angle of rotation: 90°; nickel-plated brass body; galvanised steel flange; seat sealing: PTFE and Viton O-ring.

Permitted mounting position: from vertical to horizontal relative to the valve axis; installation with the axis pointing downwards is not permitted. At a medium temperature of -10...2°C, shaft heating or a valve neck extension is recommended. The permitted medium temperature may depend on the actuator type; limits are given in the relevant actuator data sheets.