DP Trio Filter Housing – 20” BIG – 1.5” In/Out

Atlas Filtri DP Trio Filter Housing with Spanner & Bracket

A heavy-duty triple filter housing designed for high flow whole-house water filtration systems using large-capacity 20” BIG cartridges.

This commercial-grade DP Trio housing combines three 20” BIG filter housings onto a single moulded head, allowing multi-stage filtration in one compact assembly. It is designed for domestic, commercial, and industrial applications requiring higher flow rates, greater cartridge capacity, and reduced maintenance intervals.

What’s Included

• Triple 20” BIG filter housing assembly

• Integrated moulded Trio head

• Wall mounting bracket

• Housing spanner

• Pressure gauge ports

• Drain ports

• Lubrikit O-ring lubricant

How It Works (Simple Explanation)

This housing system is designed to hold three separate 20” x 4.5” BIG filter cartridges in series, allowing you to build a complete multi-stage whole-house filtration setup.

Each stage can be configured with different filtration media depending on your water treatment goals.

Stage 1 – Coarse Sediment Filtration

The first housing is commonly used for coarse sediment removal.

This helps reduce:

• dirt,

• sand,

• rust,

• bark,

• and organic debris,

before the water reaches finer filtration stages. This protects downstream cartridges and helps extend overall system life.

Stage 2 – Fine Filtration or Carbon Filtration

The second stage is often configured with:

• fine sediment filters,

• carbon block cartridges,

• or chlorine reduction media.

This stage improves:

• water clarity,

• taste,

• odour,

• and chemical reduction performance.

Stage 3 – Specialty Filtration

The final housing can be used for advanced treatment such as:

• scale reduction,

• PFAS reduction,

• fluoride reduction,

• or polishing filtration.

This modular design allows the housing to support a wide range of custom whole-house filtration systems.

Features

Integrated Trio Moulded Head

The three housings are mounted onto a single moulded head, reducing:

• plumbing complexity,

• installation time,

• and potential leak points compared to separate standalone housings.

Pressure Gauge Ports

Integrated pressure gauge ports allow gauges to be installed directly into the housing assembly without additional plumbing.

Pressure monitoring helps identify when filters are becoming blocked, allowing cartridges to be replaced at the correct time for optimal performance.

Drain Ports

Each housing includes built-in drain ports to simplify servicing.

This allows the housings to be drained before opening, helping reduce:

• water spillage,

• servicing mess,

• and cartridge handling weight during maintenance.

20” BIG Housing Design

The 20” BIG format provides:

• higher dirt-holding capacity,

• lower pressure drop,

• longer cartridge life,

• and higher flow capability than standard 10” housings.

This makes it particularly suitable for:

• larger homes,

• high demand households,

• and commercial water filtration systems.

Technical Specifications

• Housing type: DP Trio BIG

• Filter size: 20” BIG

• Cartridge compatibility: 20” x 4.5”

• Inlet/Outlet: 1.5” BSP

• Material: Reinforced polypropylene

• Max pressure: 8.3 bar (120 psi)

• Operating temperature: 4°C to 45°C

• Application: Whole supply filtration

Compatible Cartridge Types

Compatible with a wide range of 20” BIG cartridges including:

• sediment filters,

• carbon block filters,

• pleated cartridges,

• stainless steel screen filters,

• PFAS reduction cartridges,

• scale reduction cartridges,

• and specialty media filters.

Available Configurations

The Atlas Filtri BIG housing range is available in:

• MONO (single housing),

• DUO (double housing),

• and TRIO (triple housing) configurations.

Available filter sizes include:

• 10” BIG,

• and 20” BIG formats.

Best For

• Whole-house water filtration systems

• High flow residential applications

• Commercial filtration systems

• Multi-stage filtration setups

• Sediment, chlorine, PFAS, and scale reduction systems

• Homes requiring longer cartridge life and lower maintenance intervals

The Bottom Line

The Atlas Filtri DP Trio 20” BIG housing is a commercial-grade platform designed for serious whole-house water filtration systems.

Its large-capacity 20” BIG design supports higher flow rates, increased cartridge life, and flexible multi-stage filtration configurations while simplifying installation through its integrated triple-head layout.

For homes or commercial sites needing robust whole-house filtration with room for advanced treatment stages, this housing provides a strong and highly adaptable foundation.