Faucet Cartridge: Choice of Water Flow Control Mechanism

The cartridge is an integral part of a modern mixer. Its function is to adjust the flow rate and temperature of the water flow. The cartridge for the mixer is presented in a variety of options, which is determined by the design, material of manufacture and standard size. In the event of a malfunction of the plumbing equipment, you will need to replace its interior. For this, it is important to know how to select the appropriate locking mechanism.

The cartridge is an essential element of any mixer

The cartridge for the mixer is represented by a small plastic cylinder, in the upper part of which there is a stem, and in the lower part there are three holes. Cold and hot water flows through them. The cartridge is designed to adjust the water pressure and temperature.

There is a special plate inside the mechanism, which, when turned, provides mixing of cold and hot streams of water. In case of displacement of this disc, a change in pressure occurs. On some cartridge models, a small roller may be installed instead of the plates. When the element rolls, it can close the hole with cold or hot water. The stem is an extension of the valve handle.

The locking mechanism can be replaceable or one-piece with a mixer. The price of the cartridge for the mixer type is higher. However, in the event of a system malfunction, which usually occurs due to a failure of the internal part, you can replace the mixer cartridge, restoring the entire water supply system to work.

Any cartridge consists of a plastic body, a sleeve with a stem, upper and lower ceramic discs, a washer for the upper plate, holes, which are supplemented with rubber seals that ensure a snug fit between the parts.

A metal mesh can be installed on the holes of the internal spare part for the mixer in the bathroom, which prevents the cartridge from clogging with small abrasive particles that may be in the water.If the mixer is designed for a shower, it includes a switch that redirects the flow of water to the shower or faucet.

Ceramic plates fail most quickly, which is due to the presence of fine sand impurities in the water. The period of use of the cartridge is determined by the tightness of these discs. Convenience when opening and closing the tap depends on how accurately the plates are fitted and ground.

Classification of cartridges by the design of the internal closure

Depending on the internal device, there are types of mixer cartridges such as ball and disc. The first version of the product is represented by a hollow metal ball equipped with communicating holes. The work of such a locking mechanism is as follows. At the moment of movement of the lever, the ball closes the holes from the supply channels of cold and hot water, due to which the flows are mixed.

At this time, the flow rate and temperature conditions are set. The larger the junction area, the stronger the water pressure. The temperature change is carried out by tilting or turning the nozzles.

Important! This version of the 35 mm mixer cartridge is typical for single-lever designs.

Malfunctions in the operation of a ball product are associated with the accumulation of deposits in its cavity. This negatively affects the smooth operation of the device, reducing the period of its operation.

In disc cartridges, the locking mechanism is represented by a special ceramic disc that can rotate when acting on the lever, opening or closing the channels of water flows, and move, adjusting the pressure. This version of the product is installed in both single-lever and two-valve mixers.

The plastic housing of the disc cartridge can be collapsible or non-collapsible. In the first case, the structure consists of two parts, interconnected with a rubber seal. The fixation of the elements takes place thanks to plastic rivets. The inserts are located in the holes in the lower part.

Depending on the material of manufacture of the internal closure, there are ceramic and metal locking mechanisms. The ceramic cartridge for the mixer is a simple design with two or three plates as the main elements. These ceramic discs fit snugly against each other, providing, thanks to the presence of three holes, regulation of the intensity of the flow of water and its temperature. These cartridges are more durable, are characterized by quiet operation, the ability to smoothly adjust the water pressure.

Varieties of cartridges depending on the principle of operation

Based on the principle of operation, there are types of cartridges designed for single-lever, double-lever taps and thermostats.

The most common type of locking device is the one-handed mixer. It is operated by means of a lever that rotates in different directions, providing a change in the position of the internal lock of the cartridge, which can be disk or ball. Single-lever faucets are installed on bathtub sinks, kitchen sinks and showers.

The double lever cartridge is used primarily for shower cabins. It is also called a divertor. A cartridge for a shower stall mixer is characterized not only by three positions for mixing flows, but also by four or more, which is determined by the number of connected devices. For example, if a hydrobox is installed, the divertor can work in five positions. To switch the operating modes, a brass rod equipped with plates is used.It is able to rotate around its axis 360 degrees, thanks to which the device can combine several positions.

Important! It is better to entrust the repair of the shower stall cartridge to a specialist so as not to violate the operational characteristics of the product.

The thermostatic mechanism is installed in mixers equipped with a thermostat. On one side of the device body there is a temperature scale where the required parameter is set. The shut-off element is constantly in a given position, providing the set temperature and the required pressure. This option is mainly used in public bathrooms. The device is convenient for families with elderly people and children.

Each version of the mixer assumes the use of a cartridge of a certain size, which is regulated by the current standard. The size value is determined by the diameter of the internal locking mechanism. For showers or washbasins, it is customary to use a locking mechanism of 28.32 and 35 mm. The shower stall is characterized by the installation of a cartridge for a mixer 40 mm and 45 mm.

Important! Some foreign manufacturers produce 25 mm faucet cartridges, which are used for certain models of plumbing fixtures.

Redecoration or complete replacement of the cartridge in the mixer

The average lifetime of a cartridge in a tap is 4-7 years. The fact that the internal locking mechanism needs to be replaced will be evidenced by the lack of smooth movement of the lever, difficult adjustment of the intensity of the water flow, poor mixing of cold and hot flows and the presence of leaks in the device in the closed position.

The latter sign may indicate that the gasket is worn out. To eliminate the malfunction, it will be enough to replace it. If a leak from the device is subsequently observed again, this state of affairs indicates the need to replace the mixer itself. The cartridge or the plumbing device itself needs to be replaced if significant damage to the mechanism case is found.

If there is a creak or hum during the operation of the mixer after replacing the cartridge in the tap, this indicates that the locking device is not matched to the size. Due to the fact that the outlet diameter of the valve is less than its outlet or the stem is too long, the lever will not rotate normally around the axis. The situation can be corrected only by replacing the cartridge.

Important! The valve can make a lot of noise due to the sharp pressure drop in the system, which is easy to fix by replacing the gasket.

Incorrect operation of the locking mechanism is not always a reason for a complete replacement of the device. If the decorative rings are worn or the working surfaces are clogged, it is enough to carry out a cosmetic repair of the mixer cartridge.

It is possible to reduce the friction force and extend the life of the cartridge by lubricating the plates with a special oil composition or a hermetic mixture. In case of clogging of the working surfaces of the disks, the litter is removed using a conventional toothbrush or cotton wool soaked in vinegar. If incorrect operation of the thermostatic cartridge is observed, it is necessary to reset the settings and re-adjust its operation. Failure can occur as a result of frequent use of the device and the passage of poor quality water through it.

How to change a cartridge in a mixer: work sequence

Before replacing the cartridge in the mixer, you should prepare such tools and materials as a new locking mechanism, a flat screwdriver, an adjustable wrench, pliers, thick rubber.

At the first stage, the supply of cold and hot water is shut off, which will prevent flooding. There is a decorative plug under the pivot arm, which is simply inserted into the hole. To dismantle it, you will need a screwdriver, with which you need to pull out the element.

There is a screw under the plug that holds the lever of the ceramic locking device. It should be unscrewed, after which the cover is carefully removed. There is a decorative clamping nut under the lever, which can be easily unscrewed by hand. The tool should not be used to avoid damage to the outer surface and threads. A decorative ring and an ordinary nut are located under the nut, which is unscrewed with an adjustable wrench.

The lever and its elements can stick to the mixer body, making it difficult to dismantle. This is a consequence of the oxidation of the element or the occurrence of rust. To solve this problem, you can pour hot water over the junction. In this case, oxygen-containing compounds or vinegar will also help. The threaded connection can be heated with a building hair dryer.

You can unscrew the lever with a wrench. In order not to damage the body of the product, first put on a woven fabric. Sometimes they hit the crane with a hammer at a certain point.

Now you can remove the cartridge itself and inspect it. For this, light swinging actions are performed on the element in the upward and sideways direction. If cracks, chips or other visible damage are found, it should be replaced with a new device.

Important! The new cartridge must be identical to the old product or match it in terms of material and size.

Before replacing the cartridge in the tap with a new mechanism, the inner area of ​​the mixer must be cleaned of contamination. A new cartridge is installed in the seat by inserting the protrusions of the device into the grooves of the mixer body. The correct installation of the element will be evidenced by a characteristic click, to achieve which it will take some effort. Then you need to screw on the fixing nut and ring. The final stage is the installation of the lever, followed by its fixation with a screw. Next, the hole should be closed with a decorative plug.

Important Tips for Longer Cartridge and Mixer Life

In order to ensure the longest possible operation of the mixer and the internal shut-off element, certain rules must be followed. The cartridge first of all fails due to the constant exposure to an aggressive environment, which is water. It often contains large amounts of fine suspended matter and sand. These contaminants scratch and abrade the ceramic plates of the cartridge, causing system malfunction.

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If the part is non-separable, its damage will cause the installation of a new element, which will bring additional financial costs. To prevent the negative effects of poor quality water, you should install filters for the coarse mixer.

For correct operation of the mixer, it is recommended to flush the entire system at least once a year and clean the internal elements with a special solution or dishwashing liquid. Limescale will work well with vinegar.

Important! To clean the internal locking mechanism, do not use abrasive paper or metal sponges, which can damage the protective layer.

Ceramic plates should be periodically treated with mixer cartridge oil lubricants. If significant chips, scratches and cracks are observed on the body of the locking mechanism or its elements, or the stem is broken, the part must be replaced immediately.

If, after installing a new cartridge, leaks from under the mixer are found, the reason may be the presence of grains of sand between the parts of the device or a loose nut. The problem can be eliminated after re-disassembling the mixer and reinstalling it.

How to choose a cartridge for a mixer: useful recommendations

The cartridge can be collapsible and non-collapsible. The latter option is widely used and available. The device does not need cleaning and lubrication, the gasket cannot be removed from it, therefore such a product cannot be repaired. Considering how much a non-separable cartridge costs, it should be borne in mind that a cheap mechanism does not differ in durability.

Helpful advice! When buying a mixer, you can additionally purchase a spare cartridge so that later there will be no difficulties in finding a new device.

The new product must be the same as the old model. In the case of choosing another modification, the size of the cartridge for the mixer must correspond to the seat. When choosing a new mechanism, you should pay attention to the shape, number and location of the stem holes. Models of the same type of locking device may differ from manufacturer to manufacturer. If the old element has a foot, then the new cartridge must have this part of the same size.

Important! There are universal cartridges that are suitable for any faucet, as well as unique models designed for installation in a specific model of plumbing fixture.

If the size of the cartridge for a single-lever mixer or two-valve device is incorrect, the device will not work correctly due to tight rotation of the lever and the occurrence of a squeak. Such a mixer is inconvenient to use. Failure to properly adjust the flow can damage the shower hose or quickly wear out the tap threads.

It is better to purchase a mixer repair kit from well-known manufacturers, whose products are presented in many specialized stores. In addition, many companies provide a long warranty period. Large firms produce quality products, which are accompanied by an ISO 9001: 2000 certificate. You should also pay attention to the presence of a document, which indicates that the internal obturator of the mixer has been tested for a working pressure of 3.5 atm.

Cartridges for mixers Grohe, Vidima and other manufacturers

The plumbing equipment of the German company Vidima is very popular. It produces high-quality shower sets, different types of mixers and accessories for them. The company manufactures exclusively ceramic closures. Vidima faucet cartridges are reliable, practical, durable, durable and affordable. The entire range of products undergoes strict quality control for compliance with European standards.

The German company Grohe offers high-quality cartridges with increased resource. Ceramic plates are manufactured using an innovative technology, according to which they are repeatedly sprayed onto their surface.In this regard, Grohe cartridges are characterized by increased strength, wear resistance and durability.

AM.PM company produces a wide range of cartridges with increased throughput, which is about 43 l / min. This is 2 times more than standard models. The manufacturer also specializes in the production of thermostatic mechanisms with a diameter of 35 mm.

Helpful advice! High capacity cartridges are best suited for bathrooms.

Finnish company Oras offers high-quality sanitary products and accessories. Mixer cartridges are practical and durable. Products are assembled from high quality elements from European suppliers. Strict quality control is carried out at all stages of production. The only drawback is their high cost.

Plumbing products and cartridges for Hansgrohe faucets are distinguished by their reliability and affordable cost. You can find models of this manufacturer in any specialized store.

Chinese manufacturers who offer internal locking devices with good value for money are Potato, Frap, Santіde, Tivolі.

Popular crane cartridge models

When using a single-lever mixer, pay attention to the M2 / M3 cartridge 92730000 from the German manufacturer Hansgrohe. This is a disc version of the locking mechanism with ceramic plates. The cartridge is reliable, practical and durable. The model can also be installed in a mixer for a shower stall. The cost of the device is 1900 rubles.

Another model that is characterized by wear resistance is the AVP DN5 T cartridge. This product has a special coating on ceramic plates, which prolongs the life of the device. The body of the locking mechanism is also made of ceramic. You can buy such a cartridge for a 35 mm mixer for 5.5 thousand rubles.

A popular model is the Oras 158890 device. The product is made in a ceramic case with a stainless steel metal stem. The model is distinguished by its versatility, which allows you to install the locking mechanism in both single-lever and double-lever mixers. You can buy such a cartridge for 2.8 thousand rubles.

The budget option is offered by the well-known brand Vidima. The Sirius B94936NU disc ceramic locking mechanism can be used for single lever mixers. The cost of the product is only 900 rubles. For double-lever mixers, the Sirius B964935 cartridge in a plastic case will be a good solution. The model is characterized by good build quality and low cost - 850 rubles.

Noteworthy is the cartridge for the Groe mixer 46374000 (35 mm). This type of locking device is used for bath and bidet sinks. The product is presented in a ceramic case with ceramic washers. You can buy the device for 2.1 thousand rubles.

A good model with legs used for single lever designs is the 35 mm Sedal G51-1 mixer cartridge. The device is of good workmanship and an affordable cost of 1.2 thousand rubles.

A good demountable model is the cartridge for the Damixa Arc 2398477 mixer with a diameter of 35 mm. The body and plates are made of ceramic. You can buy such a mechanism for 1.5 thousand rubles.

The correct choice of the internal shut-off element for the mixer is a guarantee of a well-coordinated and durable operation of the entire system. In the event of a failure of the mechanism, you can independently replace the cartridge in the crane, without having special skills.The main thing is to choose the right type of device, its size, take into account the correspondence of the number, shape and location of the holes, which should match the grooves in the mixer.