Metal-Frame Filter for High-Temperature Applications

First, the glass-fiber media forms a deep-pleated filter pack. Aluminum separators keep the individual pleats apart. This design helps maintain clear airflow channels and supports effective use of the available filter area.

Next, the filter pack is sealed to the metal frame. Depending on the temperature class, two-component polyurethane or silicone can be used. Likewise, the gasket can be selected from EPDM or silicone-based materials.

Finally, optional grounding can be specified for applications that require additional control of static electricity. The frame can also be supplied without a flange, with a single flange or with flanges on both sides.

Filter Selection and Application Process

Technical Specifications

For more information about high-efficiency filter classification, see the official ISO 29463-1 standard.

Product Coding System

The product code identifies the filter class, frame material, flange design, temperature class, grounding, dimensions, surface protection and gasket. Therefore, it provides a quick overview of the selected configuration.

Model and Performance Data

Structural Components

Filter Selection Criteria

Maintenance and Replacement

First, measure differential pressure across the filter at regular intervals. Also inspect the frame, separators, media, gasket and sealing compound. Check for deformation, tears, hardening or other visible damage.

Next, compare the measured pressure with the clean-filter value. The recommended final pressure is about twice the initial value. However, it should not exceed 600 Pa. Airflow, process hygiene and energy use should also guide the replacement decision.

Finally, allow the filter to cool completely before maintenance after high-temperature operation. Do not clean glass-fiber media with compressed air, water or mechanical methods.

Technical Application Note

Use 120°C and 260°C ratings only with a compatible frame, gasket, sealing compound, surface protection and installation configuration. Actual filter performance also depends on continuous and peak temperature, exposure time, airflow, pressure, face velocity, leakage, dust load, humidity, thermal expansion and air distribution. Therefore, confirm all components and installation details before ordering, especially for 260°C applications.

Select the Right High Temperature HEPA Filter

Send us the operating temperature, airflow, filter class and existing filter-cell dimensions. Also include frame material, gasket type, flange design and grounding requirements. We can then support technical selection and quotation preparation.

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