Automatic air separator - 1/2" IVAR.DISCALAIR 551

Product detailed description

Automatic air separators are essential components in closed heating systems to ensure efficient operation by removing entrained air. Installers working on residential and commercial heating systems often encounter air accumulation in radiators, pipes, and heat exchangers, which can reduce efficiency and cause noise. This IVAR model is suitable for use in central heating systems, underfloor heating circuits, and other pressurised closed-loop applications where air removal is critical for system performance.

Proper integration of an air separator helps maintain stable pressure and flow rates, preventing issues such as reduced heat transfer and uneven temperature distribution. The model is commonly installed in accessible locations along the system piping, typically near the return line or at high points in the circuit. It is designed for use with water-based heating media and should be selected according to the system’s flow rate and pressure requirements.

Technical parameters

Material	Brass CW617N
Operating temperature	+110 °C
Nominal pressure	PN 10
EAN	8016615113891
Weight	0.622 kg
Code	551004
Brand	IVAR

The maximum operating temperature of +110°C and a nominal pressure rating of PN 10 make this model suitable for typical heating systems with moderate temperature and pressure levels. The CW617N brass body provides good corrosion resistance and mechanical strength, while the stainless steel internal components ensure durability in contact with water. These parameters are important for selecting the correct model based on the system’s operating conditions and expected service life.

Installation and connection

The air separator is connected using a 1/2 inch thread, typically in the direction of flow within the system. Installers should ensure the unit is mounted vertically with the air vent at the top to allow for effective air removal. A secure and leak-free connection is essential, and the use of appropriate sealing materials such as PTFE tape or thread sealant is recommended. Common installation errors include incorrect orientation, which can prevent air from being vented, and failure to check for proper alignment with the system piping. Always verify the system pressure and temperature compatibility before commissioning.

Compatibility and accessories

This model is compatible with standard heating system components such as circulator pumps, expansion vessels, and pressure-reducing valves. No additional accessories are required for basic operation, but installers may need to include isolation valves for maintenance access. There are no related products listed for this model.

Technical background for designers

The operating principle of the IVAR automatic air separator is based on the buoyancy of air bubbles, which rise to the top of the chamber and are released through the vent. The CW617N brass body is selected for its strength and resistance to corrosion in water-based systems. The stainless steel internal components ensure long-term reliability and compatibility with the working medium. The unit is designed to integrate seamlessly into closed heating systems and should be positioned to allow for easy access during maintenance. Factors such as system flow rate, pipe diameter, and air content will influence the efficiency and service life of the device.

Service and operation

No specific service intervals are provided for this model. Routine checks should include verifying the integrity of the connections and ensuring the vent is not clogged. If air accumulation is observed despite the presence of the separator, it may indicate a blockage or incorrect installation. The unit requires no regular maintenance beyond visual inspection and cleaning if necessary.

Frequently asked questions

Can the IVAR 551004 be used in systems with a temperature higher than 110°C?
No, the maximum operating temperature is specified as +110°C. Exceeding this limit may affect the performance and integrity of the device.

Is the air separator suitable for installation in a horizontal pipe?
No, the unit must be installed vertically with the air vent at the top to ensure proper air removal.

Can the device be used in a system with a pressure higher than PN 10?
No, the nominal pressure rating is PN 10. Operating at higher pressures may cause mechanical failure or leakage.

What type of sealing material should be used for the 1/2 inch connection?
PTFE thread sealant or high-quality thread tape is recommended to ensure a leak-free connection.