Automatic hygroscopic vent valve - 1/2" IVAR.HYGRO

Product detailed description

Hygroscopic air vent valves are essential in closed heating and plumbing systems to ensure efficient operation by removing air that accumulates in the system. These valves are commonly used in residential and commercial buildings, including underfloor heating systems, central heating circuits, and hot water installations. Installers and service technicians rely on these valves to maintain system pressure and prevent airlocks that can reduce efficiency and cause damage. The IVAR model is suitable for use in systems with moderate operating temperatures and standard pressure levels, where automatic air venting is required without manual intervention.

Correct installation and selection of air vent valves are critical to system performance. The valve must be positioned at high points in the system to allow air to rise and be expelled. It is important to ensure that the valve is installed in a location that is easily accessible for inspection and maintenance. The hygroscopic mechanism ensures that the valve remains closed under normal conditions and opens only when air is present, preventing water loss and maintaining system integrity.

Technical parameters

Material	nickel-plated brass CW617N
Operating temperature	+100 °C
Nominal pressure	PN 10
EAN	8016615010367
Weight	0.048 kg
Code	508041
Brand	IVAR

The valve is rated for a nominal pressure of PN 10, meaning it is suitable for systems operating at up to 10 bar. The maximum operating temperature of +100 °C makes it compatible with standard heating and hot water systems. The nickel-plated brass CW617N construction provides corrosion resistance and durability in wet environments. These parameters are essential for ensuring the valve is correctly sized and selected for the intended application.

Installation and connection

The IVAR hygroscopic air vent valve is designed for 1/2 inch pipe connections, typically using a male or female thread depending on the system configuration. Installers should verify the thread type and direction of flow to ensure compatibility with the existing piping. The valve should be installed vertically with the venting mechanism facing upwards to allow proper air release. Common installation errors include incorrect orientation, which can prevent the valve from functioning correctly, and failure to check for leaks after installation. A pressure test of the system is recommended to confirm the valve is sealed and operating as intended.

Compatibility and accessories

The IVAR hygroscopic air vent valve is compatible with standard heating and plumbing systems that operate within the specified pressure and temperature limits. It is typically used in conjunction with radiators, underfloor heating manifolds, and hot water storage tanks. No additional accessories are required for basic installation, but installers may need to use sealing compounds or thread tape to ensure a watertight connection. No related products are available for this model.

Technical background for designers

The hygroscopic air vent valve operates by using a moisture-sensitive membrane that expands when exposed to air. This expansion opens the valve to allow air to escape while remaining closed when water is present. The nickel-plated brass CW617N body provides resistance to corrosion and mechanical wear, ensuring long-term reliability in wet environments. The valve integrates into the system by being installed at high points where air naturally accumulates. The service life and efficiency of the valve are influenced by the quality of the installation, the frequency of air accumulation, and the operating conditions of the system.

Service and operation

No specific service intervals are provided for this model. However, installers should periodically inspect the valve for signs of blockage, corrosion, or leakage. A simple visual inspection and pressure test can confirm the valve is functioning correctly. If air is not being vented effectively, the valve may need to be cleaned or replaced. The hygroscopic mechanism is self-maintaining under normal conditions, but excessive exposure to contaminants or high temperatures may affect performance.

Frequently asked questions

Can the IVAR hygroscopic air vent valve be used in hot water systems?
Yes, the valve is suitable for hot water systems with an operating temperature up to +100 °C.

Is the valve compatible with copper or plastic piping?
Yes, the valve is compatible with both copper and plastic piping, provided the connection is properly sealed.

Can the valve be installed horizontally?
No, the valve must be installed vertically with the venting mechanism facing upwards to function correctly.

Does the valve require regular maintenance?
Under normal operating conditions, the valve does not require regular maintenance, but periodic inspections are recommended to ensure proper function.