4-way mixing valve Valvex Controlmix4 DN20 (model 6093120) for hydronic systems

Valvex Controlmix4 DN20 is a 4-way mixing valve designed for hydronic heating and cooling systems. Intended for integration with boilers, heat pumps, radiators and underfloor heating circuits, the valve manages flow paths to blend or divert fluids between circuits and to maintain desired temperature setpoints. The compact DN20 body provides reliable hydraulic control in residential and light-commercial installations where temperature regulation, system balancing and partial hydraulic separation are required.

Advantages

The Valvex Controlmix4 DN20 offers precise flow direction control and stable mixing performance across a range of operating conditions. Its four-way configuration enables both blending and diverting functions within a single compact valve, reducing the need for multiple fittings and simplifying piping layouts. The valve construction supports consistent temperature control, helps reduce hydraulic interactions between circuits and is suitable for automated actuation when paired with standard actuators and controllers.

Suitable for

• Mixing flow between supply and return circuits in heating systems
• Diverting or bypassing flow to protect boilers and heat pumps
• Balancing temperatures for radiators and underfloor heating zones
• Hydraulic separation tasks in small commercial and residential plants

Key specifications

• Valve type: 4-way mixing/diverting valve
• Nominal size: DN20
• Application: hydronic heating and cooling systems
• Function: blend or divert fluid between circuits for temperature control
• Compatibility: suitable for integration with boilers, heat pumps, radiators and floor heating manifolds

How to use

Install the valve in the piping layout according to system design drawings, ensuring correct orientation of ports for intended mixing or diverting operation. Connect to appropriate actuator and control wiring if automatic regulation is required, and commission the valve by checking travel, leak tightness and correct flow direction. Adjust the control system to achieve the required setpoint temperatures, and verify interaction with pumps and other hydraulic components to prevent unwanted pressure differentials.

Usage recommendations

Use Valvex Controlmix4 DN20 with compatible actuator types and a properly configured controller. During commissioning, flush and purge the system to remove debris, check seals and connections for tightness, and verify operation across the expected temperature range. Regular inspection as part of scheduled maintenance will help ensure reliable temperature control and system balancing.