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Air Filters and Chemical Filtration
Automatic Roll Air Filter
A self-renewing intake filter that advances clean synthetic media from a supply roll when the exposed curtain reaches its pressure-drop setpoint.
- Automatic Media Advance
- Large Intake Coverage
- Differential-Pressure Control
- Long Roll Service Interval
Product Introduction
The automatic roll air filter suspends a continuous synthetic or glass-fiber media curtain between an upper supply roll and a lower take-up roll inside a galvanized support frame. A differential-pressure switch or timer energizes the geared drive when the exposed section becomes loaded, presenting fresh media to the airstream without removing a bank of individual panels. Chains, tracks or a support screen guide the media across the full face and prevent it from being pulled downstream. The spent strip winds onto the take-up core for contained removal during scheduled maintenance.
Key Features
Continuous roll construction covers large intake faces with fewer individual filter changes.
A positive geared take-up system maintains curtain tension and stores used media on a removable core.
Side tracks and downstream support prevent flutter and edge bypass across tall filter banks.
Customer Product Concerns
Reliable roll-filter operation depends on straight media tracking, a useful advance setpoint and enough remaining roll for the expected dust season.
Maintenance teams must replace dozens of large intake panels during production hours.The powered supply and take-up rolls expose fresh media automatically while the intake remains assembled.
A skewed curtain walks out of its guide and opens a bypass gap along one side.Aligned cores, side tracks and uniform take-up tension keep the roll square across the airflow.
Timer-only advance wastes usable media during clean-weather periods.Differential-pressure control advances the curtain in response to actual loading rather than elapsed time alone.
Operators discover an empty supply roll only after the filter face is fully loaded.A roll-end indicator or low-media switch provides visible notice before the final usable section is consumed.
Typical Applications
Large industrial outside-air intakesCompressor and turbine inlet housesFoundry and manufacturing ventilationHigh-dust warehouse air handlersLegacy renewable-media filter systems
Technical Parameters
Typical construction ranges for an automatic renewable-media roll filter assembly are listed below.
| Core Material | Nonwoven polyester or glass-fiber roll media with downstream scrim support |
|---|---|
| Panel Thickness | 19-44 mm nominal uncompressed media thickness |
| Effective Width | 610-2440 mm active filter-face width |
| Maximum Length | 13700-19800 mm media roll length, depending on media grade and core |
| Steel Facing Thickness | 1.00-2.00 mm galvanized housing, guide rails and support screen |
| Core Density | Approximately 35-120 kg/m³ nominal lofted roll-media bulk density |
| Thermal Conductivity | Approximately 0.035-0.045 W/(m·K) for the dry fiber roll |
| Surface Finish | White or blue supported media with mill-galvanized frame and coated drive components |
| Joint Type | Upper supply core and lower powered take-up core guiding one continuous media curtain through side tracks |
| Customization | Available based on the intended application and operating environment. |
Available Options
Polyester or glass-fiber media rollPressure-switch or timer advance controlVertical or horizontal roll travelRoll-end alarm and local control panel
Planning a Automatic Roll Air Filter specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
