Atlas Filtri 20" Duo BIG Filter System – Rainwater Sediment Reduction (20μm & 1μm Filters)

Crafted in Italy for performance, flow, and durability, the Atlas Filtri 20" Duo BIG sediment filtration system is the professional’s choice for treating rainwater in rural and tank-fed homes. With dual 20" BIG filters, this system offers high-capacity, layered protection that improves water clarity and supports UV disinfection systems.

Whether you’re supplying a large household or looking for a serious upgrade in filtration quality, this bundle ensures clean, sediment-free water delivered efficiently and reliably.

What’s Included
• Atlas Filtri Duo 20" BIG housing with 1.5" BSP inlet/outlet
• 20μm Pleated Coarse Sediment Filter (20" BIG)
• 1μm Polyspun Fine Sediment Filter (20" BIG)
• Reinforced polypropylene filter body with integrated pressure gauge and drain ports
• Mounting bracket and reversible spanner
• Lubrikit O-ring lubricant

Product Description

This Italian-made system features two large-capacity filter housings on a single moulded head, reducing installation complexity and potential leak points. The first stage pleated filter removes large particles, dirt, and debris. The second stage polyspun filter handles finer sediment and turbidity—critical for protecting UV units and maintaining water purity.

Built-in drain ports and pressure gauge ports offer easy servicing and real-time system monitoring. This is the go-to solution for whole-house rainwater systems needing reliable, low-maintenance sediment filtration.

Key Features

• 2-stage sediment filtration: 20μm pleated + 1μm polyspun
• Atlas Filtri Italian construction with 20" x 4.5" BIG filters
• 1.5" BSP inlet and outlet – supports high-flow setups
• Durable, reinforced polypropylene body
• Pressure gauge and drain ports built-in for service and monitoring
• Spanner and mounting hardware included
• Max pressure: 8.3 bar | Max temp: 45°C | Min temp: 4°C
• Perfect pre-treatment for UV systems and appliances

Why You Should Buy

If your rainwater supply deserves top-tier protection, this system delivers the ideal balance of filtration performance and Italian durability. Its extended filter size reduces change-out frequency while enhancing water quality for the entire property.

FAQs

Q: Is this suitable for larger homes or farms?
A: Yes – the 20" BIG filters offer excellent flow rates and dirt-holding capacity, ideal for multi-outlet systems.

Q: How often do I need to change the filters?
A: Generally every 6–12 months depending on water use and quality. The pleated filter is washable for extended life.

Q: Does this filter bacteria or pathogens?
A: No – this system is for sediment only. For biological protection, pair it with a UV system.

Q: Is installation difficult?
A: It’s designed for straightforward mounting with a single bracket and reversible spanner included.