Description
Discover the precision and reliability of the Belimo R2025-10-S2 Characterised Control Valve, designed for optimal performance in open and closed cold and warm water systems. Ideal for modulating control of air-handling and heating systems on the waterside, this valve ensures air-bubble-tight sealing and efficient fluid management.
Click here for the technical data PDF
Functional Data:
- Fluid: Cold and warm water, water with glycol up to max. 50% vol.
- Fluid Temperature: -10...120°C [14...248°F]
- Note: At fluid temperatures of -10...2°C, a spindle heater or valve neck extension is recommended. Fluid temperature limits may vary based on the actuator type.
- Close-off Pressure ∆ps: 1400 kPa
- Differential Pressure Δpmax: 350 kPa
- Note: 200 kPa for low-noise operation
- Flow Characteristic: Equal percentage (VDI/VDE 2173), optimized in the opening range
- Leakage Rate: Air-bubble tight, leakage rate A (EN 12266-1)
- Angle of Rotation: 90°
- Note: Operating range 15...90°
- Pipe Connection: Internal thread according to ISO 7-1
- Installation Orientation: Upright to horizontal (in relation to the stem)
- Servicing: Maintenance-free
Material Composition:
- 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
Product Features:
Operating Mode: It is adjusted by a rotary actuator controlled by a commercially available modulating or 3-point control system. The ball of the valve (throttling device) moves to the position dictated by the control signal.
- Flow Characteristic: The integrated characterising disc ensures Equal percentage flow control.
Additional Accessories:
- Electrical Accessories:
- Stem heater DN 15...50 (20 W) - Type: ZR24-2
- Mechanical Accessories:
- Valve neck extension for ball valve DN 15...50 - Type: ZR-EXT-01
- Pipe connectors for ball valves with internal thread:
- DN 15 Rp 1/2" - Type: ZR2315
- DN 20 Rp 3/4" - Type: ZR2320
- DN 25 Rp 1" - Type: ZR2325
- DN 32 Rp 1 1/4" - Type: ZR2332
- DN 40 Rp 1 1/2" - Type: ZR2340
- DN 50 Rp 2" - Type: ZR2350
Installation Notes:
- Permissible Installation Orientation: The ball valve can be installed upright to horizontal, but not in a hanging position (spindle pointing downwards).
- Water Quality Requirements: Adhere to VDI 2035. Ensure valves are free from particle debris. Installation of a suitable strainer is recommended.
Why You Should Buy:
- Reliability: Designed for robust performance in HVAC systems.
- Efficiency: Optimized for low-noise and efficient fluid control.
- Durability: Constructed from high-quality materials, ensuring long-lasting operation.
- Ease of Installation: Flexible installation orientations and maintenance-free design.
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 call us on 01772 284 626.
