Pentair Pentek 150468 Big Blue Filter Housing - Heavy Duty 20in

In this review the Pentair Pentek 150468 Big Blue Filter Housing is evaluated as a straightforward heavy duty solution for whole-house and high-flow filtration needs. It is best for homeowners, light industrial sites, or anyone needing extra cartridge capacity without adding multiple vessels; the single biggest reason to buy is its extra large 20in housing that accepts a wide range of 4-1/2in diameter cartridges so fewer housings are needed for high flow-rate applications. The review focuses on build, compatibility, and real customer feedback about installation and leakage.

Key Features

• Extra large housing: The 20in sump provides greater cartridge capacity so installations can handle higher flow rates with fewer vessels.
• High-flow cap: The HFPP cap with a 3/4in NPT inlet and outlet supports faster throughput and is designed for heavy-sediment conditions.
• Broad cartridge compatibility: Accepts all Pentair Pentek 20in Big Blue cartridges and any 20in x 4.5in heavy duty filter, giving flexibility in filter media choice.
• Chemical compatibility: The Big Blue housing materials are compatible with a wide range of chemicals, making it suitable for varied water treatment setups.
• NSF tested: The housing has been tested and certified by NSF International to NSF/ANSI Standard 42 for material and structural integrity requirements.
• Optional port sizes: The HFPP cap family offers multiple NPT sizes (1in and 1-1/2in also available) for those needing larger internal ports and higher volume flow.

Who It's For

The Pentair Pentek 150468 suits homeowners with whole-house filtration systems, small commercial sites, or hobbyists running high-flow setups who want to reduce the number of housings and simplify cartridge changes. Its 20in sump and HFPP cap make it especially useful where heavy sediment or higher flow is common and a durable housing is needed.

Those who should look elsewhere include buyers who need integrated mounting hardware or a pre-assembled kit with screws and fittings included, and applications that require a different port size than the 3/4in NPT unless they select a different cap variant. It is a housing, not a complete filtration system, so expect to supply cartridges and mounting accessories separately.

Pros & Cons

Pros

• Large 20in sump reduces the number of housings needed for high flow-rate systems.
• HFPP cap with 3/4in NPT supports faster flow and heavy-sediment applications.
• Compatible with a wide range of 4.5in diameter 20in cartridges for flexible media selection.
• NSF/ANSI 42 testing assures material and structural integrity for peace of mind.

Cons

• Some customers reported leakage or assembly issues, and mounting screws are not included so additional parts may be required.

Specifications

Model	Pentair Pentek 150468 Big Blue Filter Housing
Sump length	20in
Cartridge diameter	4.5in
Cap material	High-Flow Polypropylene (HFPP)
Inlet/Outlet ports	3/4in NPT (cap variant)
Certification	Tested to NSF/ANSI Standard 42

Our Verdict

The Pentair Pentek 150468 Big Blue Filter Housing is a practical, value-oriented choice for whole-house and high-flow filtration where extra cartridge capacity and durable materials matter. It is recommended for users who need flexibility in cartridge selection and robust structural integrity; just plan to source mounting hardware and check seals during installation to avoid the occasional leakage issue others reported.

Frequently Asked Questions

Does this housing accept standard Big Blue cartridges?
Yes, it accepts Pentair Pentek 20in Big Blue cartridges and any 20in x 4.5in heavy duty filter cartridge.

What size inlet and outlet does this cap use?
The HFPP cap on this model is fitted with 3/4in NPT inlet and outlet ports; other cap variants are available in larger NPT sizes.

Are mounting screws and fittings included?
Mounting screws and additional fittings are not included with the housing, so plan to purchase those separately and inspect seals at assembly.