Mixing valve - four-way, 1"; Kv 12; 5 Nm

Product detailed description

Four-way mixing valves are essential components in central heating systems where accurate temperature regulation is required. This type of valve is commonly used in residential and commercial buildings to manage heat distribution through underfloor heating, radiators, and fan coil units. Installers often integrate these valves into systems controlled by thermostatic actuators or motorised drives. Proper setup ensures stable operation and energy efficiency.

In multi-loop systems, the valve allows the controlled blending of hot and cold media to maintain desired temperatures. The integration into closed-circuit heating loops requires attention to pipe layout and actuator compatibility. Designers and engineers should consider hydraulic balance and flow requirements when specifying this component.

Technical parameters

Material	Brass CW617N
Operating temperature	+120 °C
Servo actuator torque	5 Nm
Nominal pressure	PN 10
Weight	0.79 kg
Code	501558
Brand	IVAR

The nominal flow coefficient (Kv) of 12 indicates the volume of water that can pass through the valve per hour under specific pressure conditions. The maximum operating temperature of +120°C determines suitability for high-temperature applications such as condensing boilers or solar thermal systems. The nominal pressure (PN 10) defines the maximum pressure level the valve can withstand during normal operation. These parameters are critical for correct dimensioning and system compatibility.

Installation and connection

The valve features 1-inch threaded connections compatible with standard copper or plastic piping. Prior to installation, verify that the pipe size matches the valve inlet and outlet dimensions. Ensure all joints are sealed with appropriate thread sealing compound or PTFE tape. Incorrect tightening can lead to leakage or internal damage. The recommended torque for tightening is according to the manufacturer’s instructions. Avoid cross-threading by aligning the threads correctly before turning. After fitting, perform a visual inspection for misalignment or stress points that could cause failure over time.

Compatibility and accessories

This valve is designed for use with actuators providing a minimum torque of 5 Nm. It can be integrated into control systems using proportional or on/off actuators depending on the application. For complete system functionality, additional components such as temperature sensors or control modules may be necessary. Always refer to the system design specifications to ensure correct pairing with other components.

Technical background for designers

The four-way configuration enables the simultaneous mixing of two fluids while maintaining a consistent output. The CW617N brass construction offers resistance to corrosion and mechanical wear in aggressive environments. The material’s thermal conductivity supports rapid response to temperature changes, which is important in dynamic control systems. Long-term performance depends on the quality of the sealing surfaces and the precision of the actuator linkage. System designers should account for pressure drops across the valve and ensure that the drive mechanism provides sufficient force to overcome friction and maintain stability.

Service and operation

Routine checks should include verifying the integrity of the seals and the absence of blockages in the flow paths. If the system shows signs of reduced efficiency, disassemble the valve for cleaning or inspection. Lubrication of moving parts is not typically required unless specified by the manufacturer. In case of actuator failure, isolate the valve and inspect the drive mechanism for wear or misalignment.

Frequently asked questions

Can this valve handle mixed media such as glycol solutions?
Yes, provided the concentration and chemical properties of the solution are within the manufacturer's specifications.

Is it possible to adjust the Kv value after installation?
No, the nominal flow coefficient is fixed and cannot be changed once the valve is assembled.

What type of actuator is compatible with this valve?
Actuators with a minimum torque of 5 Nm are required for proper operation.

Does the valve require a pressure-reducing device?
If the upstream pressure exceeds PN 10, a reducing device must be installed to prevent damage.