Replacement insert - with Kv presetting

Product detailed description

Thermostatic valve inserts are essential components in hydronic heating systems where precise control of water flow is required. These inserts are commonly used in residential and commercial buildings to regulate heat distribution through radiators and underfloor heating systems. Installers and service technicians frequently replace these inserts to adjust flow rates or repair existing valves without replacing the entire unit.

Correct selection and installation of a thermostatic valve insert ensures efficient system performance and energy savings. The insert is designed to fit within the valve body and regulate flow based on the preset Kv value. This allows for tailored flow control to match the specific requirements of the heating circuit.

Technical parameters

Installation and connection

Installation of the replacement insert requires the valve to be isolated and drained. The existing insert is removed by unscrewing the valve head, and the new insert is placed into the valve body. It is important to ensure that the insert is fully seated and that the valve head is reassembled correctly to prevent leaks. The connection size is standardised to match the valve body, typically with a threaded interface. A common mistake is incorrect seating of the insert, which can lead to uneven flow or valve malfunction.

Compatibility and accessories

This insert is compatible with a range of IVAR thermostatic valves including VD, VS, VCR, VCD and VCS models. When replacing an insert, it is important to verify the model of the valve to ensure compatibility. No additional accessories are typically required for installation, but it is recommended to have a set of standard valve tools on hand for disassembly and reassembly. Related products include complete thermostatic valves and valve adjustment tools.

Technical background for designers

The operating principle of the insert is based on a fixed orifice that restricts flow according to the preset Kv value. The material used is typically a durable metal alloy that resists corrosion and wear. This ensures long-term reliability in heating systems. The insert integrates into the valve body and works in conjunction with the thermostatic element to control flow based on temperature changes. The efficiency and service life of the insert depend on correct installation and the absence of debris in the system.

Service and operation

Regular inspection of the valve and insert is recommended to ensure continued performance. During service, the valve should be isolated and drained before removing the insert for inspection. No specific service intervals are provided, but any signs of wear, leakage or inconsistent flow should prompt replacement. It is important to verify that the insert remains seated correctly and that the valve head operates smoothly.

Frequently asked questions

Can this insert be used with all IVAR thermostatic valves?
It is compatible with IVAR VD, VS, VCR, VCD and VCS valves. Always confirm the valve model before installation.

Is it necessary to recalibrate the valve after inserting a new insert?
Recalibration is not required if the new insert has the same Kv value as the original. However, if the Kv value is changed, the system may need to be rebalanced.

Can this insert be used in systems with high water hardness?
It is suitable for use in standard heating systems. However, high water hardness may increase the risk of scale buildup and should be considered during system design.

What tools are needed to replace the insert?
A standard set of valve tools, including a valve key and screwdriver, is typically sufficient for installation and removal.