Pressure expansion vessel - water supply systems - 80l; 10bar; 1"; vertical with base IVAR.AFV 80 - AQUACOLD

Product detailed description

Pressure expansion vessels are essential components in potable water supply systems, particularly in installations where thermal expansion is a factor. These vessels help manage pressure fluctuations caused by temperature changes in the water, ensuring system stability and preventing damage to pipes and fittings. This model is suitable for residential and commercial applications, including domestic hot and cold water systems, and is commonly used in conjunction with water heaters, boilers, and pump systems. The vertical orientation with base allows for space-efficient installation in mechanical rooms or utility areas.

The vessel is designed for installation in systems operating within a temperature range of -10°C to +99°C, with a recommended maximum operating temperature of +80°C. It is constructed to handle pressures up to 10bar and is equipped with a 1 inch connection for integration into standard plumbing systems. The inclusion of a replaceable EPDM membrane ensures long-term reliability and ease of maintenance.

Technical parameters

Code	A032L37
Brand	IVAR

The 80L capacity and 10bar pressure rating are critical for proper system sizing. The 1 inch connection size must be matched with the system's piping to ensure compatibility. The operating temperature range allows for use in both cold and hot water systems, but the recommended maximum of +80°C should be adhered to for optimal performance and longevity.

Installation and connection

The vessel should be installed in a location that allows for easy access for maintenance and inspection. The vertical orientation with base requires secure mounting to prevent movement or vibration. The 1 inch connection should be fitted with appropriate fittings and sealed with a suitable gasket or thread sealant to prevent leaks. It is important to ensure that the vessel is installed in a position where it is not subject to direct exposure to freezing conditions, especially if the system is used in colder climates. Common installation errors include incorrect orientation, failure to secure the base properly, and using incompatible sealing materials.

Compatibility and accessories

This pressure expansion vessel is compatible with standard potable water systems and can be integrated with pressure-reducing valves, pressure switches, and water heaters. For installation, additional components such as pipe fittings, sealing materials, and mounting brackets may be required. Related models include IVAR.AC (for hanging installation), IVAR.AFH (horizontal with legs), and IVAR.AFV (vertical with base), which offer alternative mounting options depending on the available space and system requirements.

Technical background for designers

The operating principle of the vessel is based on the separation of water and air by means of an EPDM membrane. As water expands due to heating, the membrane compresses the air chamber, allowing the system to accommodate the increased volume without pressure spikes. The EPDM material is resistant to both hot and cold water and provides a long service life. The vessel is designed for integration into systems that require thermal expansion management, and its performance is influenced by the system's operating temperature, pressure, and the frequency of thermal cycling. Proper sizing is essential to ensure that the vessel can handle the expected expansion volume without over-pressurisation.

Service and operation

Regular inspection of the vessel is recommended to ensure that the membrane remains intact and that there are no signs of leakage or corrosion. The pressure in the air chamber should be checked periodically and adjusted if necessary to maintain optimal performance. No specific service intervals are provided in the brief, but any visible signs of wear or system performance issues should prompt an inspection. The replaceable membrane allows for easy servicing without the need to replace the entire vessel.

Frequently asked questions

Can this vessel be used in a hot water system?
Yes, it is suitable for hot water systems with a maximum operating temperature of +80°C.

Is the membrane replaceable?
Yes, the EPDM membrane is replaceable and comes in the form of a vacuum.

What is the recommended installation orientation?
The vessel is designed for vertical installation with a base to ensure stability and proper operation.

Can this model be used in a system with a pressure-reducing valve?
Yes, it is compatible with systems that include pressure-reducing valves, provided the pressure settings are within the vessel's operating range.