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20″ Big Blue Filter Housing Spanner

Name: 20" Big Blue Filter Housing Spanner
SKU: 5881
Availability: InStock

P106,26

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Make filter maintenance effortless with our specially designed water filter spanner wrench for Big Blue filter housings. Built for durability and precision, this tool provides a secure grip, making tightening and loosening housings simple and reliable every time.

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Description
Shipping & Return

20″ Big Blue Filter Housing Spanner (4.5″ Diameter Housing Wrench)

Overview

The 20” Big Blue Filter Housing Spanner is a must-have tool for anyone using large water filter housings. This 20” Big Blue Filter Housing Spanner allows you to tighten and loosen housings quickly without damaging them, making maintenance faster and safer.

Made from durable, heavy-duty plastic, this spanner ensures a secure grip and long-lasting performance. It helps prevent leaks and makes cartridge replacement effortless.

With its ergonomic design, the handle provides better leverage and comfort during use. Whether you’re maintaining a home water filtration system or managing an industrial setup, the 20” Big Blue Filter Housing Spanner delivers convenience and reliability.

Always make sure to match the correct spanner size with your filter housing. Using the proper 20” Big Blue Filter Housing Spanner not only extends the life of your equipment but also keeps your filtration system working efficiently.

Key Features of the 20” Big Blue Filter Housing Spanner

Fits 20” Big Blue filter housings perfectly.
Made from strong, high-quality plastic for long use.
Prevents housing damage during maintenance.
Designed for easy grip and quick filter changes.
Ideal for both domestic and commercial systems.

Benefits of the 20” Big Blue Filter Housing Spanner

Faster maintenance: Quickly open and close housings with minimal effort.
Protects equipment: Reduces risk of cracks or leaks during service.
Durable design: Strong plastic construction for long-term reliability.
Versatile use: Works in home and industrial water systems.

Specifications of the 20” Big Blue Filter Housing Spanner

Fits: 20″ length, 4.5″ cartridge diameter, “Big Blue” style housings
Use: Opening/closing filter housing bowls during cartridge replacement or system maintenance
Material: Varies (plastic or zinc-plated steel, depending on model)
Ideal for: Whole-house filter systems, water treatment setups, service technicians

Use Cases of the 20” Big Blue Filter Housing Spanner

DIY home filtration system owners servicing their whole-house filter system.
Water treatment companies, plumbers or service techs who replace filter cartridges frequently.
Bottling plants, commercial filtration systems or any setup using 20″ Big Blue housings that see regular maintenance.

Installation & Maintenance Tips of the 20” Big Blue Filter Housing Spanner

Before loosening the housing, turn off water supply and relieve pressure (open a downstream faucet).
Use the spanner to apply a steady, even force — avoid jerking or twisting violently.
After replacing the cartridge or performing the service, ensure the O-ring is clean, lightly greased (food grade silicone grease) and seated correctly before re-tightening the bowl.
Periodically check the tool itself — if using a plastic wrench and it shows wear, upgrade to a metal version to avoid breaking during use.
Store in a dry area; if using the metal version, keep it free from rust and debris to maintain grip.

Why Choose Puritech

At Puritech, we specialise in high-quality water filtration accessories. This spanner is part of our commitment to helping you maintain your system efficiently and reliably. With local support, fast delivery in South Africa, and trusted tools, we ensure you’re equipped for the job.

FAQ

Q: Will this spanner fit my filter housing?
A: It fits “Big Blue” style housings that hold 4.5″ diameter cartridges and are 20″ in length. If your housing is 10″ length or uses a different diameter cartridge, you might need a different size. All Filters
Q: Is this suitable for commercial use?
A: Yes — the tool is designed for whole-house and commercial filter housings of the 20″ Big Blue format, so it’s suitable for higher-volume systems too.
Q: How tight should the housing bowl be after servicing?
A: Tighten until the O-ring sits flush and you feel firm resistance; do not overtighten with sheer force — the spanner should allow you to get it sufficiently sealed without risking stress on the threads.
Q: What if the housing is stuck and won’t turn?
A: Make sure you’ve depressed the pressure relief on the housing, turned off water supply, and used the correct size spanner. If it’s still stuck, using a metal wrench version helps because it offers greater leverage.

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.