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

$344.30

Atlas Filtri DP Mono Filter Housing with Spanner & Bracket

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

This commercial-grade DP Mono housing is designed for domestic, commercial, and industrial applications requiring higher flow rates and larger filtration capacity. With 1.5” BSP connections, reinforced polypropylene construction, integrated pressure gauge ports, and a built-in drain port, it provides a durable and service-friendly platform for custom water filtration systems.

What’s Included

• Single 20” BIG filter housing

• Wall mounting bracket

• Housing spanner

• Pressure gauge (manometer) ports

• Drain port

• Lubrikit O-ring lubricant

How It Works (Simple Explanation)

This housing is designed to hold one 20” x 4.5” BIG filter cartridge and can be used either as a standalone filter or as part of a larger multi-stage whole-house filtration system.

Depending on the cartridge installed, it can be configured for:

• sediment removal,

• chlorine reduction,

• PFAS filtration,

• scale reduction,

• or specialty water treatment applications.

Common Applications

Sediment Filtration

When fitted with a sediment cartridge, the housing can help remove:

• dirt,

• sand,

• rust,

• bark,

• and organic debris,

helping protect plumbing, pumps, appliances, and downstream filters from premature wear and blockage.

Carbon Filtration

When paired with a carbon block cartridge, the housing can help reduce:

• chlorine,

• taste,

• odour,

• and chemical contaminants,

improving overall water quality throughout the home or building.

Specialty Filtration

The 20” BIG format also supports specialty cartridges for:

• PFAS reduction,

• scale management,

• fine filtration,

• and advanced chemical treatment.

This makes the housing highly flexible for both residential and commercial whole-house filtration systems.

Features

Pressure Gauge Ports

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

Pressure monitoring makes it easier to identify when filters are becoming blocked, helping maximise cartridge life and maintain optimal system performance.

Drain Port

The built-in drain port simplifies servicing and cartridge replacement.

By draining the housing before opening:

• water spillage is reduced,

• servicing becomes cleaner,

• and the filter bowl is lighter and easier to handle.

The included reversible spanner is designed to operate both the housing bowl and drain port.

20” BIG Housing Design

The 20” BIG format provides:

• higher dirt-holding capacity,

• longer cartridge life,

• lower pressure drop,

• and improved flow capability compared to standard slimline housings.

This makes it particularly suitable for:

• larger homes,

• high-demand residential systems,

• and commercial filtration applications.

Reinforced Polypropylene Construction

The reinforced polypropylene head is designed for durability in demanding filtration environments while remaining suitable for potable water applications.

Technical Specifications

• Housing type: DP Mono 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,

• pleated cartridges,

• carbon block filters,

• 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.

Compatible Accessories & Spare Parts

Common accessories include:

• pressure gauges,

• replacement spanners,

• wall brackets,

• and a wide range of sediment and carbon cartridges.

Compatible spare parts include:

• ATF-DPBIGSPANNER housing spanner,

• replacement wall brackets,

• and Lubrikit O-ring lubricant.

Best For

• Whole-house water filtration systems

• Single-stage filtration setups

• High flow residential applications

• Commercial filtration systems

• Sediment and chlorine reduction systems

• PFAS and specialty filtration setups

• Homes requiring large-capacity cartridge filtration

The Bottom Line

The Atlas Filtri DP Mono 20” BIG housing with 1.5” connections is a commercial-grade foundation for building high flow whole-house filtration systems.

Its large-capacity design supports higher flow rates, longer cartridge life, and simplified maintenance while remaining compatible with a wide range of filtration media. Whether used as a standalone sediment filter or integrated into a larger multi-stage setup, it provides a durable and highly adaptable platform for whole-house water treatment.