Belimo R2020-S1 2-Way Ball Valve – DN20, Rp 3/4"
The Belimo R2020-S1 is a 2-way open/close ball valve designed for hydronic heating, cooling and air-handling applications. It is suitable for both open and closed water systems and is commonly used for water-side shut-off and on/off control duties.
The valve features a durable nickel-plated brass body with stainless steel internal components and provides an air-bubble-tight shut-off for reliable isolation. Its DN20 body uses a Rp 3/4" internal threaded connection and provides a Kvs flow coefficient of 15 m³/h.
Suitable for water and water/glycol mixtures up to 50% glycol by volume, the R2020-S1 has a wide operating fluid temperature range of -10°C to 120°C.
Technical Specifications
| Specification | Details |
|---|
| Model | R2020-S1 |
| Valve Type | 2-Way Ball Valve |
| Function | Open / Close |
| Nominal Diameter | DN20 |
| Connection | Rp 3/4" Internal Thread |
| Thread Standard | ISO 7-1 |
| Pressure Rating | PN40 |
| Kvs | 15 m³/h |
| Fluid | Water / Water with up to 50% glycol |
| Fluid Temperature | -10°C to 120°C |
| Close-Off Pressure | 1400 kPa |
| Max. Differential Pressure | 1000 kPa |
| Recommended Differential Pressure for Low-Noise Operation | 200 kPa |
| Leakage Rate | Air-bubble tight, Leakage Rate A to EN 12266-1 |
| Angle of Rotation | 90° |
| Valve Body | Nickel-plated brass |
| Closing Element | Stainless steel |
| Spindle | Stainless steel |
| Spindle Seal | EPDM O-ring |
| Seat | PTFE with EPDM O-ring |
| Installation Position | Upright to horizontal relative to spindle |
| Maintenance | Maintenance-free |
Applications
Ideal for shut-off and open/close control of water circuits in:
Manufacturer: Belimo
Model: R2020-S1
Size: DN20 / Rp 3/4"
Kvs: 15 m³/h
