Dynamic thermostatic valve - three-axis, 1/2" x EK, P

Product detailed description

This three-axis dynamic thermostatic valve is commonly used in radiant heating systems found in residential and commercial buildings. Installers often encounter these valves in underfloor heating applications, where consistent and balanced water flow is essential for even heat distribution. The valve’s dynamic balancing feature ensures stable flow rates despite variations in system pressure, making it suitable for systems with multiple circuits or zones. Its compact design and compatibility with both copper and plastic piping allow for flexible installation options in various building types.

The valve is typically installed in conjunction with other heating system components such as manifolds, circulators, and pipe insulation. It requires careful alignment during installation to ensure proper sealing and flow characteristics. Because it is part of a larger system, it must be selected based on the required flow rate and system pressure conditions.

Technical parameters

Material	Nickel-plated brass CW617N
Operating temperature	120 °C
Nominal pressure	PN 10
Weight	0.282 kg
Code	500512
Brand	IVAR

The nominal pressure rating of PN 10 indicates the valve can operate safely at pressures up to 10 bar at standard temperature conditions. The maximum operating temperature of 120°C makes it suitable for high-temperature radiant heating applications. The valve body is constructed from nickel-plated brass CW617N, which offers good corrosion resistance and mechanical strength. These parameters are important for determining correct sizing and ensuring long-term reliability in the system.

Installation and connection

To install the valve, align the 1/2 inch connection with the corresponding pipe and secure using IVAR compression fittings (TR for copper, TA for ALPEX, TP for plastic). Ensure the fitting is fully seated and tightened according to the manufacturer’s torque specifications. Check that the valve is oriented correctly—flow direction must match the arrow marking on the body. Common installation errors include incorrect orientation, insufficient tightening, or using incompatible fittings. After installation, verify the system’s flow balance and ensure the valve is not obstructed by debris or air pockets.

Compatibility and accessories

This valve is compatible with copper and plastic piping systems via the appropriate IVAR compression fittings. For installation, ensure that the correct fittings (IVAR.TR, IVAR.TA, IVAR.TP) are available for the specific pipe material. Additional components such as manifolds, balancing tools, and thermal actuators may also be needed depending on the system configuration. No related products are listed for this model.

Technical background for designers

The three-axis design allows the valve to adjust dynamically to changes in system pressure and temperature, maintaining a stable flow rate. This helps reduce energy consumption and improves system efficiency by preventing over- or under-supply of heat. The nickel-plated brass body provides durability and resistance to corrosion, while the internal components are designed to handle high-temperature water. Proper integration into the system depends on accurate calculation of flow requirements and correct positioning within the circuit. Long-term performance is influenced by the quality of the installation, system water chemistry, and regular maintenance.

Service and operation

No specific service intervals are provided in the brief. Routine checks should include verifying the integrity of the connections, ensuring no leaks are present, and checking for signs of wear or blockage. If the system experiences reduced flow or uneven heating, the valve should be inspected for debris or internal damage. In general, the valve requires minimal maintenance due to its robust construction and self-regulating design.

Frequently asked questions

Can this valve be used with plastic piping?
Yes, the valve can be connected to plastic piping using IVAR.TP compression fittings. Ensure the correct fitting is selected for the specific pipe type.

What is the maximum operating temperature?
The valve is rated for a maximum operating temperature of 120°C, making it suitable for high-temperature radiant heating systems.

Is the flow rate adjustable?
The valve features a pre-set flow adjustment, allowing for initial setting of the Kv value. Further fine-tuning may require additional balancing tools.

Can the valve be installed in a vertical position?
Yes, the valve can be installed vertically, but the flow direction must follow the arrow on the body to ensure correct operation.