HEPA Filter Module

Product Specifications

Technical details and manufacturing context for HEPA Filter Module

Definition

The HEPA Filter Module is a self-contained filtration component within a HEPA Filter Bank system, typically consisting of a rigid frame housing pleated HEPA filter media, gaskets for sealing, and sometimes pre-filters. It functions as the primary particle removal stage, capturing at least 99.97% of particles 0.3 microns in diameter or larger from the airstream passing through the filter bank assembly. The module is available in various configurations, with frame materials such as aluminum or galvanized steel, and sealing gaskets made of polyurethane or closed-cell foam. For applications requiring higher temperature resistance, EPDM gaskets may be specified, and stainless steel frames are available for corrosive environments. The media grade can be selected between H13 and H14 according to EN 1822, with filtration efficiency ranging from 99.97% to 99.99% as per ISO 29463. Rated airflow typically ranges from 500 to 2000 m³/h, with an initial pressure drop of 150 to 250 Pa at rated airflow. The maximum operating temperature is 60 to 80 °C, and maximum operating humidity is 80 to 95% RH (non-condensing). Standard dimensions include 610×610 mm and 610×1220 mm (W×H×D), with weights ranging from 10 to 25 kg depending on size and frame material. The maximum airflow velocity is 1.0 to 1.5 m/s, and the leakage rate is ≤0.01% at rated airflow and pressure. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The module is designed for use in HVAC systems, cleanrooms, and industrial processes where high-efficiency particulate removal is required. Proper installation and sealing are critical to achieve the specified performance, and regular monitoring of pressure drop is recommended to determine when filter replacement is necessary.

Working Principle

Air is forced through the pleated filter media within the module. Particles are captured via a combination of interception, impaction, and diffusion mechanisms. The dense, fibrous structure of the HEPA media physically traps contaminants, allowing only clean air to pass through to the downstream side of the filter bank. The efficiency of particle capture depends on the media grade and airflow velocity, with higher velocities potentially increasing pressure drop and reducing efficiency. The module's frame and gaskets ensure a tight seal to prevent bypass of unfiltered air. Over time, as particles accumulate on the media, the pressure drop increases, indicating the need for maintenance or replacement. The module is designed to operate within specified temperature and humidity limits to maintain media integrity and performance.

Common Materials

Glass fiber filter media, Aluminum or galvanized steel frame, Polyurethane or closed-cell foam gasket

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Airflow	500–2000 m³/h	Higher airflow increases pressure drop.ISO 29463
Filtration Efficiency	99.97–99.99 %	MPPS-based efficiency for HEPA H13-H14.ISO 29463
Initial Pressure Drop	150–250 Pa	At rated airflow; increases with loading.ISO 29463
Max Operating Temperature	60–80 °C	Continuous operation; higher for special media.
Max Operating Humidity	80–95 % RH	Non-condensing; higher may damage media.
Sealing Gasket Material	NBR–EPDM	EPDM for higher temperature resistance.
Frame Material	GI–SS304	Stainless steel for corrosive environments.
Media Grade	H13–H14	H14 for higher efficiency requirements.EN 1822
Dimensions (W×H×D)	610×610–610×1220 mm	Standard sizes; custom available.
Weight	10–25 kg	Depends on size and frame material.
Max Airflow Velocity	1.0–1.5 m/s	Higher velocity increases pressure drop.
Leakage Rate	≤0.01 %	At rated airflow and pressure.ISO 29463

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Filter Media Pack Part
The pleated HEPA filter material that performs the actual filtration of particles.

Material: Glass fiber or synthetic fiber
Support Grid Part
A rigid internal structure that prevents the filter media from collapsing under airflow pressure.

Material: Aluminum or plastic
Frame Part
The outer rigid structure that houses all internal components and provides mounting/sealing surfaces.

Material: Aluminum or galvanized steel
Sealing Gasket Part
Creates an airtight seal between the module frame and the filter bank housing to prevent bypass of unfiltered air.

Material: Polyurethane foam, closed-cell neoprene, or silicone

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Frequently Asked Questions

What is the filtration efficiency of the HEPA Filter Module?

The filtration efficiency is at least 99.97% for particles 0.3 microns in diameter or larger, with a range of 99.97% to 99.99% depending on the media grade (H13 or H14) as per ISO 29463. Always verify the specific efficiency for your model with the manufacturer.

What are the typical operating conditions for this module?

The module operates at a rated airflow of 500–2000 m³/h, with an initial pressure drop of 150–250 Pa. Maximum operating temperature is 60–80°C, and maximum humidity is 80–95% RH (non-condensing). These are reference ranges; confirm for your application.

How do I know when to replace the filter module?

Monitor the pressure drop across the module. When it increases significantly above the initial value (e.g., due to particle loading), it indicates the filter is clogged and should be replaced. Follow the manufacturer's guidelines for maintenance intervals.

Can the module be used in corrosive environments?

Yes, for corrosive environments, a stainless steel frame (SS304) is available. For higher temperature resistance, EPDM gaskets can be specified. Always confirm material compatibility with the manufacturer for your specific conditions.

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pressure:	Max 1.5 bar differential pressure
flow rate:	0.5 to 5.0 m³/min per module
temperature:	-20°C to 80°C
particle retention:	99.97% at 0.3 μm

Product Specifications

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