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Water filter key - universal, strap, serrated

Water Filter Wrench - Universal, Strap, Notched

Do you need a tool that makes servicing water filters easier? In our offer, you will find a water filter wrench that allows for quick and hassle-free removal of the filter housing. Whether you have a cartridge filter, a reverse osmosis system, or another solution, we have a wrench tailored to your needs.

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The key for the BIG BLUE (BB) filter housing facilitates unscrewing and...
The key for the BIG BLUE (BB) filter housing facilitates unscrewing and securely tightening the housings during the replacement of filter cartridges. Designed for blue BB housings in popular heights of 10 and 20 inches. Made of plastic, with contoured reinforcements for a better grip.
Price 18.99 zł

Brand: WODARO

Reviews: 1
WHWR3 is a blue key for the housing of a cartridge filter , designed for...
WHWR3 is a blue key for the housing of a cartridge filter , designed for 10" three-part housings used in cartridge and industrial filters. It facilitates unscrewing during cartridge replacement and allows for tight sealing of the housing. Made of plastic, with profiled reinforcements. Fits most housings available on the market.
Price 9.00 zł

Brand: AQUAFILTER

Reviews: 0
Professional key for unscrewing and tightening the bodies (housings) of...
Professional key for unscrewing and tightening the bodies (housings) of water filters. Designed for use with filters and reverse osmosis systems. The UST-M brand key has 12 teeth, which facilitates a secure grip on the housing and a more efficient replacement of filter cartridges.
Price 8.00 zł

Brand: USTM

Reviews: 0
Key for the membrane housing in white color designed for housings used in,...
Key for the membrane housing in white color designed for housings used in, among others, removable inline filters, including osmosis membrane housings. It facilitates unscrewing and secure tightening of the housing during servicing and replacement of filter cartridges. Made of plastic and reinforced with profiles for better grip.
Price 8.00 zł

Brand: WODARO

Reviews: 0
The white RO filter housing key is a practical tool for reverse osmosis...
The white RO filter housing key is a practical tool for reverse osmosis systems and cartridge filters: under-sink and standing. It facilitates unscrewing the housings during cartridge replacement and allows for secure, tight fastening. Made of plastic, with profiled reinforcements. It fits most housings available on the market.
Price 8.00 zł

Brand: WODARO

Reviews: 0
Universal Aquafilter key for disconnecting hoses from quick connectors in RO...
Universal Aquafilter key for disconnecting hoses from quick connectors in RO water filters. Fits 1/4", 3/8", and 1/2" tubing. It facilitates safe disconnection of push-fit connections without tugging on the hose and without the risk of damaging the connector.
Price 4.00 zł

Brand: AQUAFILTER

Reviews: 0

Water Filter Wrench - What Is It Used For and What Is It Made Of?

A water filter wrench is an essential tool that allows for the safe unscrewing of the filter housing during cartridge replacement. It is a mandatory element in the water treatment process, helping to maintain filtration at the highest level. Most wrenches are made of durable plastic, ensuring lightness and resistance to corrosion. Metal wrenches are not used to prevent damage to the filter housing.

The wrench should be used in a clockwise direction to ensure proper tightening of the filter housing. Our water filter wrenches are perfect for household use, providing high-quality drinking water.

Plumber unscrewing the housing of a 3-stage filter with a wrench

Water Filter Wrench - Types

There are many types of wrenches available on the market, tailored to different needs and types of filters. Choosing the right tool can significantly ease the work, so it's worth getting to know a few popular options presented below.

Service Wrench with Teeth (Standard)

The toothed wrench is a popular choice, ideal for cartridge filters and reverse osmosis filters. Its distinctive feature is the precisely spaced teeth that allow for easy unscrewing even of well-fitted housings.

Available in various sizes, it is used as a standard wrench and fits most water filter housings, cartridge filters, and RO filter housings, ensuring a secure grip and stability.

Examples of toothed water wrenches

Strap Wrench (Tape Wrench) - The Universal Wrench

The strap wrench, also known as a belt wrench, is a versatile tool that works well in various situations. Although it is not dedicated to specific filters, it can be used as a universal water filter wrench, especially in emergencies. Thanks to its flexible strap, it can adapt to different housing sizes.

Universal strap and tape wrench WODARO

BigBlue Water Filter Housing Wrench

The dedicated wrench for BigBlue filters is an indispensable tool for those with large 10 or 20-inch BigBlue filters. These filters are significantly larger than standard ones, so they require a specially designed wrench. The BigBlue water filter wrench allows for easy unscrewing of these larger housings, which is essential for high-capacity cartridge filters.

Wrench for 10" or 20" BigBlue water filters

Quick Coupling Wrench

The quick coupling wrench is essential when you need to disconnect a hose from a fitting with diameters of 1/4" or 3/8". It facilitates unscrewing and disconnecting hoses in water filtration systems, allowing for efficient maintenance and servicing of treatment systems.

Wrench for fittings and quick couplings in water filters

Osmotic Membrane Wrench

Osmotic membrane wrenches are standard wrenches that allow for easy removal of the membrane from the reverse osmosis system. With the right fit, replacing the membrane is quick and hassle-free.

Osmotic membrane wrench next to the membrane housing from a water filter

Water Wrench at mojawoda.com

In our store mojawoda.com, you will find a wide selection of water filter wrenches, from housing wrenches to tools dedicated to reverse osmosis. If you are wondering how to choose the right water wrench, our specialists are happy to help you. Trust us and choose the tool that will make it easier for you to unscrew and clean the filter housing. Check out our catalog and order the wrench that best suits your needs!

Logo of the mojawoda store selling water wrenches

How to Unscrew a Water Filter?

To unscrew a water filter, follow the steps below.

  1. Shut off the water supply – make sure that water is not entering the filter to avoid leaks.

  2. Attach the appropriate wrench – choose a wrench that fits the size of the filter housing.

  3. Unscrew the filter – turn the wrench counterclockwise, using moderate force.

  4. Remove the cartridge – after unscrewing, carefully remove the old cartridge.

  5. Lubricate the gasket – before reassembling, lubricate the O-ring with petroleum jelly to prevent suction in the future.

Unscrewed housing from reverse osmosis with a dirty cartridge inside

Problem Unscrewing the Water Filter Housing

If you have trouble unscrewing the water filter, here’s what you can do step by step:

  1. Shut off the water – close the water supply to avoid flooding during work.

  2. Vent the system – unscrew the vent valve on the filter housing to reduce internal vacuum.

  3. Try heating the housing – use a hairdryer to gently heat the top part of the filter (warming the plastic may facilitate unscrewing).

  4. Use the wrench – turn the wrench counterclockwise.

  5. Lubricate the gasket – after opening, lubricate the O-ring with petroleum jelly to prevent suction in the future.

How to Unscrew a Water Filter Without a Wrench?

Although it is possible to unscrew a filter without a wrench, it is not the easiest task. You can try wrapping the filter housing with a cloth and then using tape or a large grip to increase traction. Remember to avoid excessive force to prevent damage to the cartridges and the filter itself.

Wrenches for Housings and Covers - Summary

A water filter wrench is an essential tool in every household with a water treatment system. Whether you need a wrench for housings, membranes, or quick couplings, our products are durable and easy to use. Order your housing wrench today and enjoy the efficient operation of your filtration system!