Automatic air separator - 3/4" IVAR.DISCAL 551

Product detailed description

Automatic air separators are essential components in closed heating systems to maintain efficient operation by removing entrained air. This is particularly important in residential and commercial buildings where consistent heat distribution is required. Installers often encounter air accumulation in radiators, pipework, and heat exchangers, which can reduce system efficiency and cause noise or uneven heating. The IVAR 551005 is designed for integration into such systems, ensuring continuous air removal without manual intervention.

Correct installation of air separators is crucial for system performance. The device is typically mounted at the highest point of the circuit or in areas where air tends to accumulate. It is commonly used in hydronic heating systems, including underfloor heating and radiator circuits, to maintain hydraulic balance and prevent air lock conditions. The compact design allows for installation in tight spaces, making it suitable for both new builds and retrofit projects.

Technical parameters

Material	Brass CW617N
Operating temperature	+110 °C
Nominal pressure	PN 10
EAN	8016615043877
Weight	1.84 kg
Code	551005
Brand	IVAR

The operating temperature of +110°C and PN 10 pressure rating make this model suitable for a wide range of heating applications. The CW617N brass body provides good corrosion resistance, while the stainless steel internal components ensure durability in aggressive environments. These parameters are essential for correct sizing and selection, particularly in systems with high thermal loads or where long-term reliability is required.

Installation and connection

The IVAR 551005 is equipped with a 3/4 inch connection, typically a female thread (G 3/4) for direct piping. Before installation, ensure that the system is depressurised and that the connection is clean and free of debris. The device should be mounted in a vertical position, with the air vent at the top. Common installation mistakes include incorrect orientation, which can prevent proper air release, and failure to check the tightness of the connection, which may lead to leaks or reduced performance. Always verify the system pressure and temperature compatibility before commissioning.

Compatibility and accessories

This air separator is compatible with standard heating system components such as circulator pumps, expansion vessels, and heat emitters. It is designed for use with water-based heating media and can be integrated into systems with stainless steel or copper piping. No additional accessories are required for basic operation, but it is recommended to install a pressure gauge and temperature sensor for system monitoring. Related products include manual air vents and system filters, which may be needed for complete system optimisation.

Technical background for designers

The IVAR 551005 operates on a float and valve mechanism. As air accumulates in the chamber, the float drops, opening the valve to release the air. The stainless steel components ensure resistance to corrosion and scaling, which is important in systems with hard water or chemical additives. The CW617N brass body offers good mechanical strength and thermal conductivity. The device is designed for integration into closed-loop systems and should be positioned to allow for free air movement. The service life is influenced by the quality of the water and the frequency of air accumulation, which can vary depending on the system design and operation.

Service and operation

The automatic air separator requires minimal maintenance. Regular checks should include verifying the tightness of the connection, inspecting for signs of corrosion or wear, and ensuring that the air vent is not blocked. If the system experiences frequent air accumulation, it may indicate a larger issue such as a leak or poor circulation. There are no scheduled service intervals specified in the technical data, but it is advisable to inspect the device during routine system maintenance.

Frequently asked questions

Can the IVAR 551005 be used in systems with chemical additives?
Yes, the stainless steel internal components and CW617N brass body are suitable for use with most chemical additives commonly found in heating systems.

Is the air separator suitable for high-temperature applications?
Yes, the operating temperature of +110°C makes it suitable for high-temperature heating systems such as those with underfloor heating or industrial applications.

Can the device be installed in a horizontal position?
No, the device must be mounted vertically to ensure the correct operation of the float mechanism and air release function.

What is the maximum pressure the air separator can handle?
The PN 10 rating indicates that the device is suitable for systems with a maximum operating pressure of 10 bar.