Two-way zone valve Afriso AZV 453 DN20 G1" Kvs 10 230 V AC NO

The Afriso Two-way zone valve AZV 453 DN20 G1" Kvs 10 230 V AC NO is a motorized actuator valve designed for on/off regulation of water in hydronic heating and cooling systems. The valve combines a DN20 (G1") connection size with a Kvs 10 flow coefficient and a normally open (NO) 230 V AC electric drive, making it suitable for controlling flow in radiator circuits, zone distribution manifolds, and boiler return lines. The construction supports installation in residential and light-commercial HVAC applications where a reliable electrically actuated shut-off is required.

Advantages

The valve offers straightforward electrical control with a 230 V AC drive and a normally open default position that ensures flow when unpowered. Its DN20 connection and Kvs 10 characteristic balance compact dimensions with a medium flow capacity suitable for many zone and radiator applications. The actuator and valve body are designed for integration into standard hydronic piping layouts, enabling convenient replacement or retrofit. The device provides precise on/off switching to isolate or enable flow without continuous modulation, reducing system complexity for applications that need binary control.

Suitable for

• Control of individual radiator or convector circuits in hydronic heating systems
• Zone control on distribution manifolds in multi-zone installations
• Boiler return or pump protection circuits requiring on/off isolation
• Commercial and residential HVAC applications with 230 V AC control signals

Key specifications

• Connection size: DN20 (G1")
• Flow coefficient: Kvs 10
• Actuation type: electrically actuated two-way valve, normally open (NO)
• Supply voltage: 230 V AC
• Function: on/off (binary) water flow control
• Application medium: heating and cooling water in closed hydronic systems

How to use

Install the valve in the piping run using the DN20 (G1") threaded connections and ensure correct orientation according to the flow direction marked on the valve body. Connect the actuator to a 230 V AC control circuit, following local electrical codes and safety practices; the valve is normally open and will close when the actuator receives the control signal. Commission the zone by testing open/close operation and verifying leak-free joints. Integrate with room thermostats, zone controllers, or building automation systems that provide the required on/off signal for zone management.

Usage recommendations

For reliable operation, use the valve in clean, treated water systems and install appropriate filtration or strainers upstream to prevent debris from affecting the sealing surfaces. Avoid using the valve with aggressive fluids or outside the temperature and pressure ranges specified by the manufacturer. Regularly inspect electrical connections and mechanical joints as part of routine HVAC maintenance.