Flange Filter - with Magnet, DN 40, 200 mm BRA.11.000 M

Product detailed description

Flange filters with magnet are commonly used in industrial and commercial heating, ventilation and air conditioning (HVAC) systems. They serve to remove solid particles and ferromagnetic impurities from water-based media, ensuring the smooth operation of pumps, valves and heat exchangers. Installers often encounter these units in boiler circuits, circulation loops, and water supply lines. Their placement is typically at the inlet of sensitive components such as circulators or expansion vessels to prevent clogging and mechanical wear.

In residential and commercial buildings, these filters are frequently found in central heating systems, cooling circuits, and pump stations. They are also used in water treatment and filtration systems, especially in environments where the water contains suspended solids or ferrous debris. The filter is mounted between flanges according to STN EN 1092-1 standards and is sized to match the nominal diameter of the pipeline. The presence of a magnet allows for the capture of metal particles, which is particularly useful in systems with frequent mechanical wear or in older installations with degraded piping.

Technical parameters

Installation and connection

Installation involves positioning the filter between two flanged pipe sections using PN16-rated flanges. The unit must be placed in a horizontal or vertical orientation, depending on the system layout, and oriented so that the flow direction matches the arrow marked on the body. The filter must be supported to avoid stress on the flange connections. A common mistake during installation is neglecting to align the flow direction correctly, which can reduce the effectiveness of the filter and cause premature wear on the sealing components. Before tightening the bolts, ensure that the EPDM gasket is properly seated and undamaged to prevent leakage.

Compatibility and accessories

This filter is compatible with HVAC systems and water distribution networks operating within the specified pressure and temperature limits. It is suitable for use with water containing up to 50% glycol, making it applicable in antifreeze systems. No additional accessories are required for standard installation. However, for systems with high particulate content, it may be advisable to install a secondary filter downstream or to incorporate a drain valve for periodic cleaning. No related products are specified for this model.

Technical background for designers

The filter operates by allowing fluid to pass through a stainless steel mesh, which retains solid particles larger than the mesh aperture. The built-in magnet captures ferromagnetic debris, preventing it from entering downstream components. The cast iron body provides durability and resistance to corrosion in water-based environments, while the EPDM sealing ensures compatibility with glycol mixtures and maintains a tight seal under operating conditions. The filter should be integrated into the system upstream of sensitive components to maximize protection. The service life is influenced by the frequency of maintenance, the concentration of suspended solids, and the chemical composition of the fluid.

Service and operation

Periodic inspection is recommended to check the condition of the mesh and the magnet. The filter should be cleaned manually when the pressure drop across the unit becomes excessive, indicating a buildup of debris. No specific service intervals are provided in the technical documentation. To clean the filter, disconnect the inlet and outlet, remove the cover, and use a soft brush or compressed air to clear the mesh. Always ensure the system is depressurized before performing any maintenance. A drain valve may be added to facilitate the removal of accumulated debris without dismantling the entire unit.

Frequently asked questions

Can the filter be used in glycol-based systems?
Yes, the filter is suitable for water with up to 50% glycol content. The EPDM sealing ensures compatibility with such media.

Is the filter suitable for steam or gas applications?
No, the filter is not recommended for steam, gases or hydrocarbon-based liquids. Its design is optimized for water-based media.

What is the maximum operating temperature?
The filter is rated for temperatures up to +100°C and down to -10°C. Exceeding these limits may affect performance and material integrity.

Can the filter be installed vertically?
Yes, the filter can be installed in either horizontal or vertical orientations, provided the flow direction aligns with the arrow on the body and the system supports the weight of the unit.