AFRISO ATM 881 DN25 G1 1/4 20-43°C Kvs4.2
- AFRISO ATM 881 thermostatic mixing valve for mixing and maintaining a medium temperature of 20-43°C. Kvs 4.2.
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Thermostatic mixing valve ATM 881 DN25, G 1 1/4 inch, range 20-43°C, Kvs 4.2
Precise valve for mixing and maintaining a stable temperature of the medium within the set range. Robust connection parameters DN25 / G 1 1/4 and Kvs 4,2 support the right capacity.
- Thermostatic mixing valve, model ATM 881
- Connection: G 1 1/4 inch
- Nominal diameter: DN25
- Temperature setting range: 20-43°C
- Flow coefficient Kvs: 4.2
Key benefits
Stable medium temperature due to thermostatic control in the range of 20-43°C, which helps maintain comfort and safety of the installation.
Fits installations with G 1 1/4 connection and DN25 nominal diameter, enabling easy selection and installation.
Adequate flow characteristics (Kvs 4.2) support predictable pressure drops and correct hydraulic selection.
Features and equipment
Allows mixing of streams and maintaining the set temperature of the medium within the range of 20-43°C.
Design provided for DN25 systems with G 1 1/4 threads for easy integration with existing fittings.
Kvs characteristic of 4.2 promotes proper operation in designed flows.
Application
For installations where it is required to obtain and maintain a stable temperature of the medium in the range of 20-43°C.
It works well in new and modernized systems with G 1 1/4 connections and DN25 nominal diameter.
Technical data
| Type | Thermostatic mixing valve |
| Model | ATM 881 |
| Manufacturer | AFRISO |
| Nominal diameter | DN25 |
| Connection | G 1 1/4 inch |
| Temperature setting range | 20-43°C |
| Kvs coefficient | 4,2 |
Summary
ATM 881 is a thermostatic mixing valve with parameters DN25, G 1 1/4 and Kvs 4,2, allowing precise temperature setting in the range of 20-43°C. A practical choice for installations requiring stable medium temperature.
FAQ (customer)
- What is the adjustable temperature range? The setpoint can be adjusted between 20–43°C.
- Will it fit my installation? It is designed for DN25 pipelines with G 1 1/4 threaded connections.
- Can I change the set temperature after installation? Yes, the temperature can be adjusted within the specified 20–43°C range.
- What does Kvs 4.2 mean? Kvs 4.2 indicates the flow capacity used for hydraulic sizing and estimating pressure drops.
- Is any special maintenance required? Routine functional checks and keeping the valve free from debris are generally recommended practices.
FAQ (expert)
- How should I size the valve using Kvs 4.2? Use the Kvs value to verify expected pressure losses at design flow; select the valve so it operates within an efficient authority range for your circuit.
- Installation orientation considerations? Follow standard best practices for thermostatic mixing valves; ensure proper flow direction and accessible setpoint adjustment.
- What control range should I pLan for? The control range is 20–43°C; ensure your heat source and downstream requirements align with this band.
- Commissioning recommendations? After installation, flush the line, set the target temperature within 20–43°C, and verify stability at representative flow conditions.
- Any filtration needs upstream? Protect the valve from particulates per general hydraulic practice to maintain stable operation and extend service life.
- Delivers stable outlet temperature once set—does exactly what I needed.
- Straightforward to integrate thanks to the G 1 1/4 connection size.
- Good flow characteristics; no noticeable performance issues after installation.
- Setpoint adjustment is intuitive and holds steady under varying demand.
- Solid choice for keeping temperatures consistent within the specified range.
- Worked well in our DN25 line; commissioning was quick.
- Reliable performance with predictable pressure drop for our appLication.
- After several weeks, temperature stability remains very good.
- Great balance between control range and flow capacity.
- Provided the control we needed without compLicating the system layout.