Description
This Belimo 3-Way Characterised Control Valve is designed for closed cold and warm water systems. It is ideal for modulating control of air-handling and heating systems on the water side, ensuring efficient and precise flow regulation.
Type Overview
- R3025-10-S2
- DN25
- RP 1"
- 10m³/h
- PN40
- 3.2n(gl)
- 100 Sv min.
Functional Data:
- Fluid: Cold and warm water, water with glycol up to 50% vol.
- Fluid Temperature: -10°C to 120°C [14°F to 248°F]
- Close-off Pressure: 1400 kPa
- Differential Pressure (Δpmax): 350 kPa
- Flow Characteristics:
- Control Path A – AB: Equal percentage (VDI/VDE 2173)
- Bypass B – AB: Linear (VDI/VDE 2173)
- Leakage Rate:
- Control Path A – AB: Air-bubble tight, leakage rate A (EN 12266-1)
- Bypass B – AB: Leakage class I (EN 1349 and EN 60534-4) 1-2% of Kvs value
Mechanical Data:
- Valve Body: Nickel-plated brass
- Closing Element: Stainless steel
- Spindle: Stainless steel
- Spindle Seal: EPDM O-ring
- Seat: PTFE, O-ring EPDM
- Characterised Disc: ETFE (DN 15, 20, 25, 32, 40, 50) or stainless steel (DN 40, 50)
Operational Data:
- Angle of Rotation: 90° (Control path A – AB: 15-90°, Bypass B – AB: 15-70°)
- Pipe Connection: Internal thread (ISO 7-1)
- Installation Orientation: Upright to horizontal
- Servicing: Maintenance-free
Accessories:
- Electrical:
- Stem heater DN 15-50 (20 W) ZR24-2
- Mechanical:
- Valve neck extension for ball valve DN 15-50 ZR-EXT-01
- Pipe connectors for ball valves (various sizes)
Installation Notes:
- The ball valve can be installed upright to horizontal but not in a hanging position.
- Water quality must meet VDI 2035 standards. Installation of a suitable strainer is recommended.
- Ensure the correct flow direction as specified by the housing arrow.
Why You Should Buy:
Efficiency: Ensures precise flow control for optimal heating and air-handling performance.
Durability: Made with high-quality materials for long-term use.
Versatility: Suitable for a variety of closed water systems.
For more information and to explore our range of Belimo products, visit our website at https://ecospares.co.uk/collections/belimo. If you need any assistance, please get in touch with us on 01772 284 626.