Sintered Metal Fibre Filter Media

A Fibre Network with Space for Contaminants

In graded depth media, coarser inlet regions intercept larger contaminants while finer regions retain smaller material within the structure. Distributing retention through the depth helps use the available pore volume.

Fibre close up and explanatory depth filtration schematic

Listed sheet size: 1500 × 1180 mm. Protective mesh is offered on one or both sides.

Match the Construction

The diagram illustrates a graded medium. Confirm the actual layer sequence, flow direction, protective mesh and structural backing for the selected family.

Multilayer Media for Pleated Filters

A3 is the broad pleatable family in the catalogue, covering polymerisation, spinning and process liquid applications.

* Confirm units, test conditions and acceptance tolerances; see “Understanding the Test Data”.

Specify the Finished Filter

Confirm the media thickness, steel grade, supporting layers and effective filtration area before choosing a finished candle or pack assembly. A media code alone does not define the complete filter.

Retention Requirement

Request the particle size, removal efficiency and test method associated with the selected model. The numerical prefix in a model name is not presented here as an absolute micron rating.

Select for the Fluid and Mechanical Duty

C4 - Compression Resistant Media

Multilayer, pleatable construction aimed at dirt capacity and compression resistance.

C3 - Lower Viscosity Fluids

Multilayer, pleatable media for monomers, prepolymers and other lower viscosity fluids.

* Confirm units, test conditions and acceptance tolerances; see “Understanding the Test Data”. The source lists 1700 Pa for both 20C3 and 25C3; these entries are retained as published.

Mechanical Duty

Bubble point pressure is a wetting test result. It is not the allowable operating pressure or the collapse differential pressure of the completed element.

Choose the Required Forming Behaviour

D4 - High Strength Disc Media

Multilayer media for polymer leaf disc filtration; specified as non pleatable.

E4 - Media for Pleating

Symmetrical multilayer construction developed for improved pleat formation.

*Confirm units, test conditions and acceptance tolerances; see “Understanding the Test Data”.

Options for Different Service Priorities

B3 - Low Contamination Liquids

Pleatable media for lower viscosity liquids such as hydraulic oil and fuel.

F3 — Economical Media

Lightweight, pleatable construction positioned as an economical option.

* Confirm units, test conditions and acceptance tolerances; see “Understanding the Test Data”.

Representative sheet surface and edge detail

Compare Values on a Defined Test Basis

Average Bubble Point Pressure. This is the label used in the catalogue. In a wet bubble point test, gas displaces the wetting liquid from pores. The result depends on the liquid and procedure; establish the defined endpoint before comparing suppliers.

Porosity. Porosity is the fraction of void space in the medium. It differs from particle removal efficiency, woven mesh open area and the effective area of a pleated filter.

Air Permeability. The catalogue reports a flow per unit area. A meaningful comparison requires the test pressure difference, gas conditions and specimen construction. These conditions must be confirmed for the selected media

Unit Clarification

The catalogue prints the airflow unit as “I/dm².min”. This guide interprets it as L/(dm²·min), meaning litres per square decimetre per minute. Confirm the unit and test pressure with the supplier.

What the Tables Do Not Define

The page does not provide complete grade specific thicknesses, alloy specifications, retention efficiency curves or finished element pressure and temperature limits. Obtain these for the selected construction before approval.

From Media Data to Process Performance

Pressure loss depends on fluid viscosity, flow, filtration area and media resistance. Airflow figures cannot directly predict polymer melt pressure loss.

Use application specific flow data and include the support structure and element geometry in the review.

Controlled Comparison

Compare candidate media at the same fluid, temperature, throughput and required retention. Verify clean pressure loss and subsequent pressure rise in the actual supported element.

Qualify the Media in the Operating Process

Metal fibre media are used in polymer candle, leaf disc and spin pack filters. Removing solids, agglomerates and gels can support filament continuity and film quality; actual performance depends on the contamination and selected medium.

Define the Process. Record polymer or fluid grade, viscosity basis, flow range and temperature. Identify contamination type, current element reference and the reason for replacement or improvement.

Review the Assembly. Provide a drawing with active area, media stack, supports, flow direction, seals and end connections. Include operating pressure, change out differential pressure and transient conditions.

Set Trial Acceptance. Record initial pressure loss, pressure rise per operating hour or tonne, run duration and product quality. In spinning, include spinneret blockage and filament break trends; in film, track the agreed defect measure.

Cleaning and Reuse

Select the cleaning method for the deposit, alloy and assembled filter. Polymer filters may require thermal, chemical or ultrasonic treatment, followed by cleanliness and integrity assessment. Use a qualified procedure matched to the element

Compare post cleaning flow and integrity results with a documented new element baseline. Integrity testing and particle removal efficiency measure different things; an acceptance method needs validation for the particular medium and element design.

RELEASE FOR REUSE Set approved acceptance limits, retain the element identification and cleaning history, and inspect the support structure, joints and sealing surfaces before returning the filter to service.

Release for Reuse

Set approved acceptance limits, retain the element identification and cleaning history, and inspect the support structure, joints and sealing surfaces before returning the filter to service.

Supply Information

Specify the model, alloy, thickness, dimensions, mesh protection, final element drawing, quantity, required documentation and trial approval criteria. Include expected annual consumption and the requested delivery schedule.