Belimo R3020-2P5-4-B2 - 6-way control valve with orifice

Belimo R3020-2P5-4-B2

6-way control valve with orifice for closed water systems. The two sequences enable water-side control of heating and cooling elements using a rotary actuator with a 90° rotation angle.

Key features and specifications

• DN 20, PN 16; Rp 3/4" female threaded connection.
• Kvs (sequence 1): 2.5 m³/h; Kvs (sequence 2): 4 m³/h.
• Medium: water or water with up to 50% vol. glycol; medium temperature 6...80°C [43...176°F].
• Maximum differential pressure ∆pmax 100 kPa; closing pressure 350 kPa. For quiet operation: Δpv100 <50 kPa.
• Linear flow characteristic; bubble-tight, leakage rate class A (EN 12266-1).
• Nickel-plated brass body; stainless-steel flow control disc.
• Sequence 1: 0...30° (recommended for cooling); dead zone: 30...60°; sequence 2: 60...90° (recommended for heating).
• The integrated pressure compensation function operates when the valve is closed (45°), while keeping sequences 1 and 2 separate.

Installation instructions

Permitted installation position: from vertical to horizontal in relation to the stem. Installation with the stem pointing downwards is not permitted. Observe the flow direction; the ball position is indicated by the L marking on the stem.