Crane for washing machine: view overview, choice rules and installation

Automatic washing machines firmly entered the use of modern man. They greatly simplify the care of clothing, minimize the participation of a person in the process of washing the linen. However, in order for the machine to functionably function for a long time, it must be properly connected to the water supply system. Mandatory condition for connecting the device is the installation of a crane, which is the main element of the shut-off reinforcement and prevents emergency situations.


The role of the crane in the water supply system of the washing machine is invaluable. This is because In water supply communications, hydroudars often occur, which are a consequence of unexpected emergency surges of pressure inside the network. As a result of such impacts, the internal water supplies of the washing machine, such as the check valve and flexible hose, may be damaged and cause a flood.

Moreover, even in the absence of emergenial situations, the shut-off valve of the machine is not designed for constant pressure of the water column: its spring starts to stretch, and the membrane ceases to fit tightly to the hole. Under the influence of constant squeezing, the rubber gasket often does not withstand and burst.

The risk of a breakthrough is particularly increasing at night, when the waterscence tends to zero, and the pressure in the plumbing network reaches its daily maximum. In order to avoid such incidents at the place of joining the washing machine to the water supply, the universal view of the shut-off reinforcement is installed – water tap.

After each wash, the water supply to the car overlaps, which completely eliminates the risk of a hose break and flooding of the lower floors apartments.

Device and principle of operation

To connect washing machines to the water supply, most often use Simple ball valves that are distinguished by high reliability, long service life, simple design and low price. The use of valves, conical models and valve cranes, suggesting a slightly longer torque for opening / closing water, is not usually practiced. To date, there are several varieties of shut-off valves for washing machines, and the functioning of most of them is based on the work of the ball.

The ball crane is easy enough and consists of a housing, an inlet and outlet nozzles with an outer or internal thread, a ball with a rectangular recess for the rod, rod, planting and sealing rings, as well as a rotary handle, made in the form of an elongated lever or butterfly valve.

The principle of action of ball valves is also simple and as follows. When turning the rod handle, connected with her screw, turns the ball. In the open position, there is a combination of the axis of the hole with the direction of water flow, due to which the water enters the machine without.

When turning the handle to the “closed” position, the ball rotates and overlaps the water current. At the same time, the angle of rotation of the lever or “butterfly” is 90 degrees. This allows one movement to stop water supply to the unit, which is especially important when emergenial situations occur.

This is one of the main differences of the ball crane from the valve, which For complete cessation of water supply requires a long rotation of the “lamb”. In addition, find the valve 3/4“” or 1/2“” almost impossible. The advantages of ball cranes include small sizes, reliability, long service life, low cost, maintainability, ease of design, corrosive stability and high tightness.

The disadvantages include the need for measurements and calculations during installation, as the cranes with a lever type handle may not have enough space for free travel, for example, due to the proximity of the wall.


Classification of cranes for washing machines is performed using the body execution and manufacturing material. According to the first criterion, the model is divided into Passing line, corner and three-way.

Sharoving passage forwarding

The direct passage crane consists of an inlet and outlet of the pipes located on one axis. At the same time, the inlet nozzle is connected to the tap pipe, and the output – with the filling hose of the washing machine.

Directional models are the most common type of cranes and are used when installing toilet, dishwashers and other devices.


Mr. Cranes are used when connecting a washing unit to an emission built into the wall. With this location of the plumbing communications, it is very convenient when the flexible fuzzy hose is suitable for a rosette at the bottom right angle. Corner cranes divide the aqueous stream into two plots located relative to each other at an angle of 90 degrees.

Three hundred

Crane tee is used to connect to a plumbing network of two units, for example, washing and dishwasher. It allows To simultaneously adjust the water supply to both devices and do not overload the water supply network by individual cranes for each device.

Material of manufacture

For the production of cranes use different materials on their operational properties. The most common are products from steel, brass and polypropylene, and brass models are considered the highest quality and durable. Among cheapest materials can be noted Silumin – Aluminum Alloy of Low Quality.

Silicinal models have low cost and small weight, but have low plasticity and crack from high loads. Also, the category of inexpensive shut-off valves include all types Plastic cranes.

They are conveniently mounted in the polypropylene pipeline system and make it possible to save money on the purchase of adapters from metal on plastic.

Life time

The durability of the cranes for washing machines is determined by the material of their manufacture and intensity of operation. For example, with a stable pressure within a network, not exceeding 30 atmospheres, water temperature is not higher than 150 degrees, the absence of frequent hydraulic blows and not too intensive use of the machine, the service life of steel and brass cranes will be 15-20 years.

If the crane is open / closed many times a day, and emergency situations often occur on the pipeline, then the life of the crane will be reduced by about twice. Plastic models with a brass ball and a polypropylene case are capable of listening to much more metallic – up to 50 years.

Supplementary condition for their long-term operation is the working pressure of up to 25 bar and the carrier temperature is not higher than 90 degrees.

How to choose?

When choosing a crane for connecting a washing machine It is necessary to take into account a number of important points.

  • First you need to determine the type of crane. If the machine will be installed in the kitchen either in a small bathroom, where it is supposed to place it as close as possible to the wall, then it is better to purchase an angular model, and hide the water pipe into the wall, leaving only a node for connecting. If, in addition to the washing machine, it is planned to connect other household appliances, such as a dishwasher, then buy a three-way instance.
  • Next you need to decide on the material of the manufacture, Considering that the most inexpensive silhuman samples serve a very short time, the optimal option will be the brass crane. Plastic models also proven themselves as shut-off reinforcement, however, have a number of temperature restrictions and working pressure.
  • It is also necessary to look at the correspondence of the external and inner threads of the water pipes and the crane. There are all sorts of versions of threaded connections, so it’s not difficult to choose the desired model.
  • It is required to pay attention to the diameter of water pipes and relate it to the size of the tap.
  • An important criterion for choosing a model is the type of valve. So, when installing a crane in a limited space or if the crane is in view, it is better to use the “butterfly”. Such a valve has small sizes and looks pretty aesthetic. In hard-to-reach places, preference should be given a lever, since in the event of an accident, such a valve is much easier to grasp and close.
  • It is advisable to choose models of famous manufacturers and do not acquire cheap cranes of little-known firms. Good demand for companies such companies: Valtec, Bosch, Grohe and Bugatti. Buying branded cranes will not be invoiced for the budget, since the cost of most of them does not exceed 1000 rubles. You can, of course, purchase a model and for 150 rubles, but it is not worth waiting for its high quality and long service life.

Installation and Connection

In order to independently install or change the crane, you will need a screwdriver, adjustable and wrench, linen fiber or fum tape and filling hose. And the latter, unless it goes complete with a typewriter, is purchased with a 10% reserve of length. Below is the algorithm for the installation of direct, angular and three-way cranes, depending on the location of their installation.

  • In a wall ornament. In the case of placing water pipes in the stroke or wall, use angular, less frequently direct cranes. In most cases, the socket has an internal thread, so the fitting is tightened into it, not forgetting to bring up the pass or fum-tape.

To make a mixing appearance use a decorative disk.

  • On flexible sink pipeline. This method of installation is the easiest and most common, lies in the placement of the crane-tee on the pipe site at the place of attachment of the flexible eyeliner going to the washing. To do this, overlap water, unscrew the flexible hose and screw the three-way crane on the tap pipe. On the opposite way out of the direct removal, screw the nut of the flexible hose, which is screwed to the mixer, and to the side “process” are screwed to the filling hose of the washing machine. Thanks to the Threaded Connection of the Type “American”, sealing materials for such installation are not required.

This makes the installation very simple and allows you to carry out its persons who do not have experience.

  • Box in the pipe. The use of this method is justified when the machine is on the opposite side of the sink, and the installation of the crane in the place of branch of the flexible hose is impossible. To do this, the polymer pipe is soldered, and a tee is embedded into the steel, using dear couplings and adapters for this. First produce a clipping section of a pipe equal to the sum of the length of the crane and filter. For cutting of metal pipes, a grinder is used, and plastic is cut with special scissors. Next at the ends of the metal pipes, threads are cut, which should correspond to available on the crane.

When installing a plastic crane, it is carefully customized under the size of the tap pipe with the calibrator. Then the metal connections are well stretched by an adjustable key, sealing them with palauls or fum-ribbon, and plastic are fixed by means of tightening rings. Further, the covered tap of the crane is combined with the filling hose of the washing machine and stretch all the connections again.

Without plumbing skills, it will be very difficult, so it’s better to entrust this work to professionals.

  • In the mixer. For mounting to the mixer, a three-step crane is used, which is installed on the site between the mixer body and the flexible hose of the shower or between the case and the hussack. Before installing, it is necessary to measure the diameter of the threaded connections of the mixer components and the fuel hose and only after that purchase the crane. The main disadvantage of this location of the shut-off reinforcement is considered an inesttic appearance, which is due to a violation of symmetry and harmony of the elements of the mixer among themselves. In order to set the crane with this method, you need to unscrew the hussak or shower and to the opening threaded connection to fasten the tee.

With a separate connection of the washing machine and the installation of the crane, it should be remembered that if the instrument does not include the filling hose, then Better to purchase a double model with wire reinforcement. Such samples Well hold high pressure on the network and provide uninterrupted current of water during the washing process.

You should not forget about filters for running water, which are mounted on the tap threads at the place of their connection with the tap pipe.

Frequent errors and problems when installing

In order to avoid errors when installing a crane, It is necessary to follow the advice of specialists and comply with the general rules of installation.

  • Do not need too dragging nuts, Since this can lead to a breakdown of the thread and the occurrence of leaks.
  • Do not neglect the use of sealing materials – linen thread and fium ribbon.
  • When installing the crane on polypropylene pipes Clips fastening can not be placed from the crane further 10 cm. Otherwise, when turning the butterfly valve or lever, the pipe will move from side to the side, which will negatively affect the quality of the connection.
  • Mounting the tap, It is necessary to ensure that the arrow, knocked out on the fitting, coincides with the direction of the watercourse, in no case establishing the valve on the contrary.
  • When cutting the pipe and installation of the crane ends of both partsIt should be carefully cleaned from sowing. Otherwise, they will begin to gradually separate under the influence of water and lead to pipes.
  • You can not connect the typewriter to the heating system. This is due to the fact that water in radiators is technical and for washing things does not fit.

On how to repair the crane for a washing machine, you can find out below.

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