3-way zone valve AZV 643 DN20, Kvs=8, male thread G 1 inch 1664300

Zoning valve for precise regulation in heating and air conditioning systems

The AZV 643 zoning valve is a reliable solution for controlling flow in water installations for central heating or air conditioning. Its design allows for efficient switching between circuits, and SPST signal control enables integration with various thermostats and switches. This is a key element for optimizing thermal comfort and energy efficiency in a building.

This valve is particularly useful in systems with a heat pump, where it allows switching between heating and domestic hot water. This allows you to automate the operation of the installation and ensure the appropriate temperature in each room.

Construction and application

The AZV 643 valve consists of a durable body made of brass and internal components made of PPS composite, which guarantees long-lasting and trouble-free operation. It is equipped with an electric actuator with a 1 meter long cable and a position indicator, making it easy to monitor the valve status.

Main areas of application:

• Central heating installations
• Air conditioning systems
• Domestic hot water (DHW) installations
• Systems with heat pumps – as an element switching between heating and DHW
• Zonal temperature control in residential and commercial buildings

Key features and benefits

• Efficiency: A Kvs value of 8 m³/h ensures efficient flow of the medium, minimizing pressure losses.
• Versatility: SPST signal control allows for easy integration with various control systems.
• Durability: The brass body and PPS internal components guarantee corrosion resistance and long-term operation, even when using a water-glycol mixture (up to 50% concentration).
• Position indicator: Allows for quick visual control of the valve status, which facilitates diagnostics and servicing.
• Easy installation: A standard G 1 inch connection simplifies integration with the existing hydraulic installation.
• Fast operation: A switching time of 12 seconds ensures a dynamic response to changes in heat or cooling demand.
• Manual control option: In the event of a power failure, the actuator can be removed and the switch can be turned manually, ensuring the continuity of the system (after removing the actuator).

The AZV 643 valve is an investment in comfort, energy efficiency and the reliability of the heating or air conditioning system. It is a high-quality product that will meet the expectations of both professional installers and demanding end users.