Automatic hygroscopic vent valve - 3/8" IVAR.HYGRO

Product detailed description

Hygroscopic air vent valves are essential components in closed-loop hydronic systems, including heating, plumbing and sanitary installations. These valves are commonly used in residential, commercial and industrial buildings to ensure efficient system operation by removing air that accumulates during operation. Installers and technicians encounter these valves in systems where air entrapment can reduce efficiency and cause noise or flow issues. The IVAR model 508031 is specifically designed for use in systems with nominal pressure up to PN10 and operating temperatures up to 100°C.

Correct selection and installation of air vent valves are crucial for system performance. The valve must be positioned at the highest point of the system section it serves to allow air to rise and be expelled. It is important to ensure that the valve is not installed in areas subject to high vibration or mechanical stress, which could affect its sealing or operation. The 3/8 inch connection size is suitable for a wide range of standard pipe systems, making it a versatile choice for many applications.

Technical parameters

Installation and connection

The IVAR 508031 is installed using a 3/8 inch threaded connection. The installer should ensure that the valve is mounted in a vertical position with the air venting direction upwards. The connection threads must be cleaned and sealed with appropriate thread sealant or tape to prevent leaks. A common mistake is installing the valve in a horizontal position, which can prevent proper air venting and lead to system inefficiency. It is also important to verify that the system pressure does not exceed the PN10 rating to avoid mechanical failure.

Compatibility and accessories

This valve is compatible with standard hydronic systems that operate within the specified pressure and temperature limits. It is typically used in conjunction with expansion tanks, circulation pumps and other system components. For installation, standard pipe fittings and sealing materials suitable for PN10 systems are required. No additional accessories are necessary for basic operation, but system-specific requirements may dictate the use of supplementary components such as isolation valves or pressure gauges.

Technical background for designers

The hygroscopic air vent valve operates by using a moisture-sensitive membrane that opens to release air when dry and closes when wet. The nickel-plated brass CW617N body provides a durable and corrosion-resistant housing, suitable for long-term use in wet environments. The valve integrates into the system by allowing air to escape while preventing the loss of water or other fluids. The service life and efficiency of the valve are influenced by the system's operating conditions, including temperature fluctuations and the presence of contaminants in the fluid. Proper system design and maintenance are essential to ensure optimal performance.

Service and operation

Regular inspection of the valve is recommended to ensure it is functioning correctly. The installer should check for signs of leakage, blockage or damage to the sealing membrane. No scheduled service intervals are specified in the product data, but any issues with air venting should be investigated promptly. The valve should be replaced if it shows signs of wear or if it fails to vent air effectively. Maintaining a clean system and avoiding excessive vibration at the installation point will help extend the valve's service life.

Frequently asked questions

Can the IVAR 508031 be used in a domestic hot water system?
Yes, the valve is suitable for hot water systems with operating temperatures up to 100°C and pressure up to PN10.

Is the valve compatible with plastic piping systems?
Yes, the nickel-plated brass construction is compatible with plastic piping systems that meet the pressure and temperature requirements.

Can the valve be installed in a horizontal position?
No, the valve must be installed vertically with the air venting direction upwards to ensure proper operation.

What should be done if the valve stops venting air?
The valve should be inspected for blockage or damage to the sealing membrane. If necessary, it should be replaced to restore proper function.