Filter cartridge - 90 µm; 9 3/4" - action IVAR.FR-N

Product detailed description

This filter cartridge is commonly used in residential and commercial heating and plumbing systems to remove suspended solids from water. Installers often integrate such filters in boiler circuits, domestic hot water systems, and pump lines to protect sensitive components such as heat exchangers, valves and flow meters. The compact design allows for quick replacement during routine maintenance, ensuring continued system performance and component longevity.

The cartridge is typically installed within a housing unit that fits standard pipe connections. Its primary role is to prevent sediment and debris from entering downstream equipment, reducing wear and improving overall system efficiency. When selecting a filter, engineers consider particle size retention, maximum operating conditions and the physical space available in the installation area.

Technical parameters

Material	100% PP, hot air networked PP (MELT BLOW)
Operating temperature	+50 °C
Nominal pressure	PN 8
Code	IVAFRN934090
Brand	IVAR

The specified operating temperature of +50 °C and nominal pressure rating of PN 8 define the environmental limits under which the filter can function safely. These parameters are essential for correct sizing and compatibility with existing piping systems. The melt-blown polypropylene construction provides consistent filtration performance over time while maintaining structural integrity under normal operating conditions.

Installation and connection

Prior to installation, verify that the filter housing is compatible with the cartridge’s dimensions—internal and external liner diameters are 28 mm and 63 mm respectively. Ensure the housing is fully drained and depressurized. Insert the cartridge into the housing with the correct orientation (media side facing upstream). Secure the lid using the provided locking mechanism and repressurize the system gradually. Common errors include incorrect orientation of the filter media or failure to close the housing properly, both of which can lead to bypassing of unfiltered water.

• Check for proper seating of the filter element within the housing
• Verify that the housing is rated for PN 8 and can handle +50 °C
• Ensure the system is isolated before replacing the cartridge

Compatibility and accessories

This filter cartridge is designed for use with filter housings sized for 3/4 inch and 1 inch connections. For full functionality, it should be used in conjunction with a suitable housing unit capable of accommodating the 9 3/4 inch length and 28/63 mm liner dimensions. No additional accessories are required for basic installation, though pressure gauges or differential pressure switches may be added for monitoring purposes.

Technical background for designers

The cartridge operates via mechanical filtration, trapping particles larger than 90 microns in the melt-blown polypropylene matrix. This material is selected for its resistance to chemical degradation and thermal stability up to +50 °C. The porosity and thickness of the media ensure consistent filtration without excessive pressure drop. When integrated into a system, the filter must be placed upstream of critical components to ensure all influent water is treated. The service life depends on the concentration and nature of the particulates present in the water supply.

• PP is chemically inert and suitable for potable and non-potable water applications
• Melt-blown process creates a uniform, depth-loading filter media
• Operating limits must align with the housing specifications

Service and operation

As a single-use filter, this cartridge must be replaced when clogged or damaged to maintain filtration efficiency. Visual inspection and differential pressure readings can indicate the need for replacement. During regular servicing, check the housing for leaks or wear and ensure the sealing surfaces remain intact. No cleaning procedures are applicable—once compromised, the element should be discarded and replaced with a new unit.

Frequently asked questions

Can the filter be used in both internal and external water systems?
Yes, provided the system does not exceed the specified operating temperature and pressure limits.

Is this filter suitable for use with chlorinated water?
Yes, polypropylene is resistant to chlorine and other common disinfectants found in municipal water supplies.

How is the filter oriented during installation?
The media face should be positioned to intercept the flow direction, typically upstream of the housing outlet.