DeepPleat DUO Pre Filter – Donaldson BOFA
The DeepPleat DUO Pre Filter by Donaldson BOFA is a high-capacity filtration component designed as the primary stage in industrial fume and dust...
DeepPleat DUO Pre Filter – Donaldson BOFA
Industrial DeepPleat DUO Pre‑Filter for Heavy Particulate Filtration | Donaldson BOFA – USI
The DeepPleat DUO Pre Filter by Donaldson BOFA is a high-capacity filtration component designed as the primary stage in industrial fume and dust extraction systems. Built for environments with heavy particulate loads, it captures large volumes of contaminants before they reach downstream filters such as HEPA and activated carbon filters. This ensures improved air quality, enhanced system reliability, and extended filter life.
What sets the DeepPleat DUO apart is its dual-stage design, combining a deep pleated filter media with an integrated drop-out chamber. This configuration allows heavier particles to separate and settle before reaching the filter surface, significantly reducing clogging and maintaining consistent airflow performance.
Widely used across industries such as laser processing, electronics manufacturing, and additive manufacturing, the DeepPleat DUO Pre Filter improves operational efficiency while reducing maintenance frequency. Its ability to protect downstream filters and minimise downtime makes it an essential component in high-performance industrial extraction systems.
Understanding DeepPleat DUO Pre Filter – Donaldson BOFA
The DeepPleat DUO Pre Filter combines two key elements: a deep pleated F8-grade filtration media and a large-capacity drop-out chamber. This dual-stage configuration enhances filtration efficiency by separating larger particles before they reach the filter media.
As contaminated air enters the filter, heavier particles lose velocity and settle into the drop-out chamber. The remaining finer particulates are then captured by the pleated filter media, which offers a significantly increased surface area (up to 30 m² depending on system size).
This process reduces the load on the filter media, prevents premature clogging, and ensures consistent airflow and extended filter life. The design also supports safe and easy replacement, particularly in environments where hazardous contaminants are present.
Overall, the DeepPleat DUO Pre Filter serves as a high-efficiency first-stage filtration component, ensuring improved system performance and cost-effective operation.
Technical Specifications
|
Parameter |
Specification |
| Product Type | DeepPleat DUO Pre Filter |
| Filtration Stage | Primary / Pre-Filter |
| Filter Media | Glass fibre / Borosilicate (F8 grade) |
| Filtration Efficiency | ~95% @ 0.9 microns |
| Pleat Depth | ~200 mm |
| Surface Area | ~6 m² to 30 m²+ |
| Drop-Out Chamber | Integrated (up to ~58 L or more) |
| Construction | Maxi pleat with glue bead spacers |
| Housing | Zinc-coated / mild steel |
| Compatibility | Donaldson BOFA extraction systems |
| Variants | Multiple sizes (Nano, Oracle, 1500/2000/4000 series) |
Key Features and Advantages
Dual-Stage Filtration Design
The DeepPleat DUO Pre Filter integrates a drop-out chamber with pleated filter media, allowing heavy particles to settle before reaching the filter layer, significantly improving filtration efficiency.
Extended Filter Life
By removing large particulates early, the filter reduces clogging and extends the lifespan of both the pre-filter and downstream HEPA filters, lowering maintenance costs.
High Dust Holding Capacity
The deep pleated structure (up to 30 m² surface area) enables the filter to handle high particulate loads without compromising airflow.
Integrated Drop-Out Chamber
The built-in chamber allows gravity-based separation of larger particles, reducing stress on the filter media and improving performance.
Optimized Airflow Performance
The design ensures low pressure drop and stable airflow, enhancing the overall efficiency of extraction systems.
Reduced Maintenance and Downtime
Longer service intervals result in reduced downtime and improved operational continuity, especially in production environments.
Enhanced Safety and Easy Replacement
The filter is designed for safe handling and easy replacement, minimizing operator exposure to hazardous contaminants.
Scalable Across Systems
Available in multiple sizes, the DeepPleat DUO Pre Filter is suitable for compact units as well as large industrial extraction systems.
Applications Across Industries
Laser Processing (Cutting, Marking, Engraving)
Captures high volumes of particulates and fumes, protecting laser optics and ensuring process quality.
Electronics Manufacturing
Removes solder fumes, flux vapours, and airborne contaminants in PCB assembly environments.
Additive Manufacturing & 3D Printing
Handles emissions and powders generated during 3D printing processes, ensuring stable operation.
Pharmaceutical & Chemical Processing
Supports clean air requirements and contamination control in regulated environments.
Metal Processing & Industrial Manufacturing
Captures particulates from machining, welding, and fabrication operations.
Printing & Coding Applications
Removes fumes generated during industrial printing and coding processes.
Why Choose United Spectrum Instruments?
United Spectrum Instruments (USI) delivers advanced industrial filtration solutions tailored for Indian industries.
By supplying Donaldson BOFA DeepPleat DUO Pre Filters, USI enables customers to achieve higher filtration efficiency, extended system life, and reduced operational costs.
Key Advantages
- Access to globally trusted BOFA filtration components
- Expert consultation for system design and optimization
- Support for integration with existing extraction systems
- Reliable sourcing and fast service across India
- Application-focused engineering expertise
- Strong partnership with Donaldson BOFA
USI combines global technology leadership with local expertise, ensuring safe and efficient industrial operations.
FAQs
What is a DeepPleat DUO pre filter?
It is a dual-stage filtration component designed to capture coarse and heavy particulate matter.
How is it different from standard DeepPleat filters?
It includes a drop-out chamber for pre-separation, improving efficiency and filter life.
What is the benefit of the drop-out chamber?
It allows larger particles to settle before filtration, reducing clogging and extending filter lifespan.
Where is the DeepPleat DUO filter used?
It is used in industrial fume and dust extraction systems across multiple industries.
Does it reduce operational costs?
Yes, it reduces maintenance frequency and protects downstream filters, lowering total cost.
GET IN TOUCH WITH US
Have a Project in Mind ? Let’s Talk
FAQs
What is a DeepPleat DUO pre filter?
It is a dual-stage filtration component designed to capture coarse and heavy particulate matter.
How is it different from standard DeepPleat filters?
It includes a drop-out chamber for pre-separation, improving efficiency and filter life.
What is the benefit of the drop-out chamber?
It allows larger particles to settle before filtration, reducing clogging and extending filter lifespan.
Where is the DeepPleat DUO filter used?
It is used in industrial fume and dust extraction systems across multiple industries.
Does it reduce operational costs?
Yes, it reduces maintenance frequency and protects downstream filters, lowering total cost.

