20″ Big Blue Water Filter Housing – Puritech Double O Ring

Name: 20" Big Blue Water Filter Housing - Puritech Double O Ring
SKU: HOU20BBP
Availability: OutOfStock

P483

20″ Big Blue and Big Black Heavy Duty Filter Housings offer the versatility to meet all of your large-capacity filtration needs, including high-flow and heavy-sediment applications. The extra-large housing allows for greater cartridge capacity, reducing the number of vessels required for high flow-rate applications.

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Description
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20″ Big Blue Water Filter Housing – Puritech Double O-Ring

The 20″ Big Blue Water Filter Housing – Puritech Double O-Ring is a premium large-capacity housing designed for heavy-flow or high-sediment filtration setups. This model supports standard 20″ × 4½″ cartridges, enabling high-volume flows and reduced pressure drop compared to smaller units. Moreover, the double-O-ring seal ensures superior leak protection—making this housing ideal for whole-house systems, borehole water treatment, and pre-RO filtration.

Key Features

Large Cartridge Capacity: Accepts 20″ × 4½″ filter cartridges—giving you flexibility across sediment, carbon block, or specialty media.
Double O-Ring Seal: Added seal protection improves reliability and reduces risk of leaks under high-flow or variable pressure conditions.
High-Flow Design: With oversized housing and a standard large cartridge, this unit handles higher volumes with fewer vessels.
Heavy-Duty Construction: Built for durability in whole-house or commercial environments.
Versatile Use: Suitable for household whole-house filtration, borehole systems, and pre-RO protection.

Technical Specifications

Housing Size: 20″ standard length (≈50.8 cm)
Cartridge Compatibility: Fits filters up to ~4½″ diameter (≈11 cm)
Port Size: Typically 1″ NPT female in high-flow models
Max Working Pressure: ~6 bar / ~90 psi (typical)
Operating Temperature: ~4 °C to ~38 °C (verify variant)
Seal Type: Double O-Ring for extra reliability

Why Choose This Housing?

When you’re looking for a robust, high-capacity filter housing for your whole-house water system, the 20″ Big Blue Double O-Ring housing delivers both performance and peace of mind. With its large cartridge size, you get fewer changes and lower maintenance. Additionally, the double O-ring seal enhances durability, especially in systems exposed to lots of pressure variation or heavy sediment loads. All in all, it gives you the flexibility of standard cartridges with the durability required for serious filtration applications.

Installation & Maintenance Tips

Install the housing vertically with sufficient clearance above the cap for cartridge removal?
Use a sturdy bracket or wall-mount rated for full housing weight when filled.
Lubricate the O-rings lightly with food-grade silicone before inserting the cartridge and re-sealing.
Press the pressure-relief button (if included) before opening for safe cartridge changes.
Replace cartridges at recommended intervals—sediment every 6-12 months, carbon blocks as needed. Inspect the housing body periodically for signs of cracking or UV damage.
After service, check for leaks and confirm flow meets expectations.

Return And Refund Policy

INSTORE EXCHANGES AND REFUNDS

For your convenience, item(s) purchased online may be exchanged or refunded at any Puritech store within South Africa, provided all online return policy conditions are met. A refund will be provided to you by crediting your original method of payment. Please note that cash refunds will not be provided under any circumstances and courier charges cannot be refunded.
Item(s) purchased at any Of Our store within South Africa can only be returned at a Puritech store within South Africa.

Puritech Online Returns Policy

There may be times when you will need to return an item purchased from us. Our Returns Policy is designed to assist you with your return. The benefits given by our Returns Policy are in addition to other rights and remedies you may have as a consumer under the Consumer Protection Act (CPA), as well as any other applicable acts.

If you wish to return any item(s) you have purchased, you can either return the item(s) via courier to our online store or in-person to a Puritech store within South Africa (only) within 14 days from the date of purchase…

We encourage you to return your parcel via Fast Way, Courier Guy, FedEx, or ParcelIt traceable courier services as all returned parcels remain the responsibility of the purchaser until received by Puritech.

Store purchases cannot be returned or refunded online.

Returns Policy Conditions

At Puritech we want to ensure you love the items you purchase. If you have changed your mind on a purchase we will exchange your item or refund your original method of payment provided that:

You return the item within 14 days (inclusive) from the date of purchase.
You produce your original Puritech invoice (receipt) when you return the item
The item is in original saleable condition:
With all original tags still attached
In an unopened and unused state
A return form is completed and accompanies your item(s) being returned
In original packaging

If you are not able to comply with these requirements, Puritech reserves the right to refuse an exchange or refund on change of mind items. Puritech will not accept a bank statement as proof of purchase.

We regret that we are unable to accept the exchange or return of the following items for change of mind for hygiene reasons:

Open Filters
Open Membranes
Used Reverse Osmosis Systems

Online Exchanges and Refunds

Online Exchanges

If you would like to exchange an item(s) for an alternative item(s), please complete the online Return Request form that is located within My Account under ‘My Orders’ prior to sending the item(s) back.

Exchanges can only be exchanged for the same value of the purchase price of the item being returned.

Your item (s) that you wish to return needs to be sent back to our online returns address with the relevant return documents, duly completed, and a tax invoice (receipt).

If the alternative item is no longer available, provided all the Returns Policy Conditions are met, a refund will be provided to you crediting your original method of payment. All return courier costs will be for your own expense and this will be deducted from your refund amount.

Online Refunds

To obtain a refund please fill out the online Return Request (RMA) form that is located within My Account under ‘My Orders’ prior to sending the item(s) back.

A refund will be provided to you crediting your original method of payment, providing all the Returns Policy Conditions are met and our warehouse has received the original item that is being returned. Cash refunds will not be provided under any circumstances.

COMPLETING A RETURNS REQUEST FORM ONLINE

Log into your Puritech “My Account” and go to “My Orders”.
Click on the order that contains the item(s) that you wish to return or request an exchange for and click on the returns button.
After you have submitted your return request, one of our friendly staff members will get in contact with you to organize a collection.
Once you have sent your item(s) back to our warehouse, our warehouse will authorize the refund.

Before sending, please ensure all details on this form are correct. You will also need to write the returns number on the outside of the parcel. You will be notified by email of the status of your exchange or refund.