3-way zone valve Afriso AZV 844 DN25 G1¼ Kvs 11 m3/h (S)

The Afriso 3-way zone valve AZV 844 DN25 G1¼ with a nominal flow coefficient Kvs 11 m3/h is a compact mixing/diverting valve for hydronic heating and cooling systems. Designed for use in distribution circuits, radiator branches and underfloor heating loops, the valve supports precise flow direction and proportioning when paired with compatible actuators. Its DN25 size and G1¼ threaded connection provide a standard interface for system integration and straightforward installation into existing piping layouts.

Advantages

The AZV 844 offers stable hydraulic performance with a clearly defined Kvs value to assist balancing and control tasks. Its three-way body enables both mixing and diverting configurations, reducing the need for additional piping components. The valve is suitable for actuator mounting, allowing automated zone control and integration with building management or room thermostats. Its construction is intended for reliable operation in closed hydronic circuits and minimizes pressure drop while maintaining required flow rates.

Suitable for

• Zoning and flow control in residential and commercial heating systems
• Mixing applications to temper supply water for underfloor heating
• Diverting flow between circuits in plant rooms or distribution manifolds
• Integration with electric or pneumatic actuators for automated control

Key specifications

• Valve type: three-way mixing/diverting valve
• Nominal size: DN25
• Connection: G1¼ threaded
• Nominal flow coefficient: Kvs 11 m3/h
• Application: hydronic heating and cooling systems
• Mounting: actuator-ready for automated operation

How to use

Install the valve in the pipework according to system design, observing flow direction markings and ensuring proper sealing of G1¼ threaded connections. Mount a compatible actuator onto the valve following the actuator manufacturer’s instructions and establish control wiring or pneumatic connections as required. Commission the valve by adjusting control parameters and balancing the circuit to achieve target temperatures and flow distribution. Periodic checks of sealing, actuator operation and system pressure will support reliable long-term performance.

Usage recommendations

Select an actuator compatible with Afriso AZV 844’s mounting interface and ensure the actuator stroke and control signal type match system requirements. Use appropriate thread sealant for G1¼ connections and follow standard procedures for flushing and filling hydronic systems prior to commissioning to prevent debris-related wear.