Description
The Belimo R2020-S2 series open/close ball valve is engineered to precisely control cold and warm water systems, including water with glycol up to a maximum of 50% volume. This valve ensures air-bubble-tight sealing and reliable performance and is ideal for shut-off functions on the waterside and 2-point controls in air-handling units and heating systems.
Open/close ball valve, 2-way, DN 20, Internal thread, Rp 3/4", PN 40, ps 1600 kPa, Kvs 32 m³/h, Fluid temperature -10...120°C [14...248°F]
Product Features
- Type: 2-way, Internal thread
- Application: Open and closed cold and warm water systems, shut-off functions, air-handling units, heating systems
- Operation: Adjusted by a rotary actuator with open/close signal
- Installation Orientation: Upright to horizontal (in relation to the stem)
- Maintenance: Maintenance-free
Functional Data
- Fluid: Cold and warm water, water with glycol (up to 50% vol.)
- Fluid Temperature: -10 to 120°C (14 to 248°F)
-
*Note*: At fluid temperatures of -10 to 2°C, a spindle heater or valve neck extension is recommended.
- Close-off Pressure ∆ps: 1400 kPa
- Differential Pressure Δpmax: 1000 kPa
-
*Note*: 200 kPa for low-noise operation
- Leakage Rate: Air-bubble tight, leakage rate A (EN 12266-1)
- Angle of Rotation: 90°
Materials
- Valve Body: Nickel-plated brass
- Closing Element: Stainless steel
- Spindle: Stainless steel
- Spindle Seal: EPDM O-ring
- Seat: PTFE, O-ring EPDM
Connections
Pipe Connection: Internal thread according to ISO 7-1
Dimensions
Dimensional Drawings: Refer to the product datasheet for detailed dimensions
Safety and Compliance
- Protection Class: IEC/EN
- Certification: EMC, UL Approval
- Installation Requirements: Only authorised specialists should install according to applicable regulations.
- Disposal: Must be disposed of according to local regulations
Electrical Accessories:
Stem heater DN 15...50 (20 W) ZR24-2
Mechanical Accessories:
Valve neck extension for ball valve DN 15...50 ZR-EXT-01
Pipe connectors for various DN sizes (15 to 50)
Water Quality Requirements: Must adhere to VDI 2035 standards
Servicing: Maintenance-free; ensure isolation of rotary actuator from the power supply before service
Flow Direction: Must comply with the specified direction of flow marked on the housing to avoid damage
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.
