Pocket & Bag Filters

Clean-Link offers pocket and bag filter solutions for commercial buildings, industrial facilities, and technical environments where reliable medium- to high-efficiency filtration is required.

What Are Pocket & Bag Filters?

Pocket and bag filters are flexible, multi-pocket air filters constructed with sewn or welded filter media pockets attached to a rigid or semi-rigid frame. As air passes through the pockets, particles are captured throughout the depth of the media, resulting in efficient dust loading and reduced pressure drop increase over time.

These filters are commonly used as secondary or final filtration stages in multi-stage air handling systems.

Key Functions in Air Filtration Systems

Pocket and bag filters are designed to:

• Capture fine and medium airborne particles

• Provide high dust-holding capacity

• Maintain stable airflow over extended operating periods

• Protect downstream high-efficiency filters

• Reduce maintenance frequency and operational costs

Their depth-loading design makes them suitable for continuous operation in high-airflow systems.

Typical Applications

Pocket and bag filters are widely applied in:

• Commercial HVAC systems

• Office buildings and public facilities

• Hospitals and healthcare environments

• Airports, shopping centers, and transportation hubs

• Industrial ventilation and air handling units

• Data centers and technical rooms

They are particularly suitable for systems requiring long filter service intervals and consistent performance.

Filter Media and Efficiency Options

Clean-Link pocket and bag filters are available with a range of media and efficiency options, including:

• Synthetic or glass fiber filter media

• Multiple pocket depths and pocket counts

• Various efficiency classes according to applicable standards

• Optional carbon-loaded media for odor control

Media selection can be optimized based on particle size distribution, airflow rate, and system requirements.

Advantages of Pocket & Bag Filter Design

Compared to flat panel filters, pocket and bag filters offer:

• Larger effective filtration area

• Lower average pressure drop over filter life

• Higher dust-holding capacity

• Extended replacement intervals

These advantages contribute to improved energy efficiency and reduced operating costs.

Integration in Multi-Stage Filtration Systems

Pocket and bag filters are typically installed downstream of:

• Prefilters for coarse particle removal

and upstream of:

• HEPA or high-efficiency filters (where required)

This staged approach ensures balanced filtration performance and system protection.

Selection Considerations

When selecting pocket and bag filters, key factors include:

• Required filtration efficiency

• Airflow volume and face velocity

• Available installation depth

• Pressure drop limits

• Maintenance and replacement strategy

Proper selection ensures reliable system performance and predictable filter life.

Manufacturing and Quality Control

Clean-Link manufactures pocket and bag filters with consistent pocket construction, stable frames, and uniform media distribution. Products are designed for compatibility with standard HVAC filter housings used in commercial and industrial applications.

Technical Support

For assistance with pocket and bag filter selection or system configuration, please contact Clean-Link with details of your application, airflow conditions, and filtration requirements.