20"x4.5" Big Blue Whole House Mains Water Filter Housing - Excludes Bracket, Spanner, Filters BB20

20"x4.5" Big Blue Tank Water Filter Housing

Upgrade your water filtration setup with this premium-grade 20" x 4.5" Big Blue Water Filter Housing, engineered for high-flow applications in residential, commercial, rural, and agricultural settings.

Protective covers image 6 for our Big Blue Whole House Filters can be purchased here: 
Protective Cover – Whole House Water Filter 20" x 4.5"

✅ Key Features:

• 1" BSP Inlet & Outlet Ports – Compatible with most standard plumbing setups for easy installation.

• Stainless Steel Threaded Ports – Durable, rust-resistant connections for long-term reliability.

• Pressure Relief Valve Button – Easily release internal pressure during cartridge changes.

✅ WaterMark Certified for Mains Water Installation:

If selected this housing is WaterMark certified, meeting Australian standards for installations connected to mains water supplies or in pressurised tank systems. Certification ensures safety, performance, and compliance.

Note: Certification is not required for non-pressurised systems used in rural, agricultural, or off-grid water filtration setups, where the unit is downstream of a manually operated tap or valve.

✅ Universal Cartridge Compatibility:

• Accommodates all standard 20” x 4.5” Big Blue water filter cartridges, including:

  • Sediment filters

  • Carbon block filters

  • Iron/manganese removal filters

  • Specialty filters for bore, rain, and tank water

✅ Mounting Bracket Options:

• Brackets match those shown in image 4 of this listing

• Available in:

  • White painted mild steel (includes four galvanized mounting screws)

  • Marine-grade stainless steel (includes four 316 stainless steel screws)

✅ Heavy-Duty Housing Spanner:

• Includes a robust spanner tool (as shown in image 5) for secure, easy filter housing  opening for filter removal and maintenance.

✅ Safe, Non-Toxic Construction:

• All water-contact parts are made from BPA-free, food-grade plastic, ensuring clean, safe drinking water.

✅ Warranty & Quality Guarantee:

• Comes with a 12-month warranty covering all components supplied with the original purchase.

• All filters and parts are sourced to meet or exceed Australian quality standards.

⚠️ Regulatory Compliance Notice:

As per Australian standards, any water filter system under constant water pressure must be installed with an AS3497-approved pressure-reducing valve and a backflow prevention device to ensure system safety and regulatory compliance.