Dynamic thermostatic valve - axial, 3/8"

Product detailed description

This dynamic thermostatic valve is commonly used in residential and commercial heating systems to regulate and balance the flow of hot water. It is typically installed in systems where precise control of flow rates is necessary, such as in underfloor heating circuits or radiator systems. The valve helps maintain consistent temperatures and ensures even heat distribution. The nickel-plated brass construction provides resistance to corrosion and wear, making it suitable for long-term use in central heating applications.

The valve is designed to integrate into traditional pipe systems with standard steel piping. It is often used in conjunction with manual balancing valves and thermostatic heads to achieve optimal system performance. The pre-set Kv value allows for initial flow adjustment without the need for additional tools during installation. Installers should ensure that the system pressure does not exceed the rated PN 10 limit and that the operating temperature remains within the specified range.

Technical parameters

Material	Nickel-plated brass CW617N
Operating temperature	120 °C
Nominal pressure	PN 10
Weight	0.292 kg
Code	501189
Brand	IVAR

The valve is constructed from nickel-plated brass (CW617N), which offers good mechanical strength and resistance to corrosion in hot water environments. The maximum operating temperature is 120°C, and the nominal pressure rating is PN 10, meaning it is suitable for systems with up to 10 bar pressure. These parameters are essential for proper system sizing and selection to ensure the valve can handle the expected load without failure.Installation and connection The valve is connected using a 3/8 inch axial connection and is compatible with steel piping. The head connects via an M30 x 1.5 thread, which must be checked for alignment and tightness. During installation, it is important to verify that the pipe is clean and free of debris before tightening the valve. Common installation errors include misalignment of the valve body, improper sealing, or incorrect orientation of the flow direction. Installers should also confirm that the system pressure does not exceed PN 10 and that the operating temperature does not exceed 120°C. Always follow the manufacturer’s guidelines for torque settings when tightening threaded connections to prevent leaks or damage.

Compatibility and accessories

This valve is intended for use with steel pipes and is compatible with standard thermostatic heads that feature an M30 x 1.5 thread. For complete system functionality, it should be used in combination with a balancing valve and a temperature sensor. No specific accessories are required for basic installation, but additional components may be needed depending on the system design and control strategy. There are no alternative products listed for this model.

Technical background for designers

The valve operates on a dynamic thermostatic principle, adjusting the flow based on temperature changes in the system. The nickel-plated brass body provides good thermal conductivity and structural integrity, while the CW617N alloy offers enhanced durability in hot water environments. The valve integrates into the system by responding to temperature variations, maintaining a stable flow rate without the need for external power. The service life and efficiency depend on factors such as water quality, system pressure, and regular maintenance. Proper sizing according to the pre-set Kv value ensures accurate flow regulation and minimises energy consumption.

Service and operation

Regular inspection of the valve is recommended to ensure continued performance. Key checkpoints include verifying the tightness of all connections, checking for signs of corrosion or leakage, and confirming that the valve moves freely without obstruction. No scheduled service intervals are specified in the technical documentation, but any irregularities in flow or temperature control should be investigated promptly. If the valve shows signs of wear or malfunction, it should be replaced to maintain system efficiency.

Frequently asked questions

Can this valve be used with copper pipes?
It is designed for use with steel pipes. Compatibility with copper piping should be verified according to the manufacturer’s technical data sheet.

What is the maximum allowable temperature for this valve?
The maximum operating temperature is 120°C. Exceeding this limit may affect performance and longevity.

Is this valve suitable for systems with pressure above 10 bar?
No. The valve is rated for a nominal pressure of PN 10 and should not be used in systems exceeding this limit.

Can the Kv value be adjusted after installation?
The valve is pre-set and not user-adjustable. Any changes to the flow rate should be made using external balancing methods.