Bottom valve: purpose, device + replacement instructions
Europeans show wonders of ingenuity when it comes to saving. Bottom valve - to the genius of a simple device, through which you can spend much less water and not overpay utilities.
Although the device first appeared in England, our compatriots, too, highly appreciated it and used it more often. We will understand how to select and install a stub.
Convenient savings with bottom valve
These are small locking devices that are installed in the drain holes of the sinks for water retention. Initially, they were intended for water supply systems in which hot and cold water is drawn from different taps. So it is customary to equip bathrooms in some European countries.
In our case, this function is performed by the mixers, therefore the stop valves for sinks have found another use.They are used if you need to wash, shave, hand wash children's clothes or underwear.
Devices eliminate the need to pour running water or collect it in the basin. It is enough just to lower the valve - and in just a minute the sink will be dialed.
There are two main types of valves:
- With mixer. Devices included. Their installation is provided by the model of sanitary device. To control the operation of such a bottom valve is a small lever, which is located behind the tap or to the side of it.
- Push open. These models are sold separately from the mixers. They are less popular than devices of the first type. Often they are bought by people who are already accustomed to using a locking product, but the old one is worn out and needs to be replaced.
Adaptations would hardly be widely used in the post-Soviet space if they were not included in the package of some models of mixers. The benefits of using them became obvious quite quickly, and now the stop valves for sinks are in demand from buyers.
Another plus: for installation, you do not need to make any fundamental changes in the water supply or sewage systems.
Designs can be with overflow or without. Outwardly, they differ little, but the difference in functions is noticeable.
Valves of the first type are safe: if the water pressure suddenly increases or the owner departs for a minute, the excess liquid will drain into the sewer system and not onto the floor.
If the device is without overflow, the slightest carelessness can turn into trouble.
Device and principle of operation
Lever (automatic) models consist of several functional elements:
- Bung. This is the valve that closes the drain hole in the sink.
- Lever armcontrol (knitting needle). With it, raise and lower the cork. This is convenient - do not have to lower your hand into the sink filled with water.
- Kernel. It connects the control lever and the cork.
- Thread. The device is screwed to the siphon using a threaded connection.
- Siphon. The entire assembly is an integral design for controlling the discharge of water.
Push Open valves are pressure mechanisms in which the plug is controlled by a spring.
The design is easier to lever, but less convenient to use. To press the cork, you have to put your hand in the water. It seems unpleasant to many people, especially if they washed or washed dirty things in the sink.
A significant advantage of the Push Open models is the aesthetic appearance. A compact tube at the bottom of the sink looks much more attractive than a complex design with a lever. From the outside, only a round cap is visible, in brass, bronze or chrome.
Pros and cons of using the valve
The use of new sealing devices has several advantages.
Economic benefit. Due to the growth of utility tariffs, many had to think about reducing costs.
The cost of devices varies between 500-2000 rubles, depending on the model and manufacturer. This is a low fee for reducing bills.
Easy operation. The valve is controlled by one finger. To lower or raise it, no need to make an effort. It is available even to children.
Ergonomic shape. The device is convenient, easy to clean from dirt.
Beautiful design. A neat metal or ceramic lid looks much nicer than a hole in the sink. It also benefits in comparison with the usual plastic stopper.
Secure fit. Traditional plugs for baths and sinks are tied to plumbing using fishing line, which can break at any time.
Metal chains improve the situation somewhat, but they are also not completely reliable, and they also emit noise when used.
Odor protection. Unpleasant odors in the bathroom do not always appear through the fault of users, and cleaning does not eliminate them.
It can be difficult to fight the stink, but it is necessary, since the composition of sewage gases includes substances hazardous to health - hydrogen sulfide, ammonia. By plugging the drain, you can simply get rid of the problem.
There are no serious flaws in bottom plugs, but a couple of nuances are worth considering. It will take time to get used to the features of the use of the mechanism: you need to monitor the water level when typing in the sink.
There are also irritating moments in the application of spring mechanisms - lowering hands in dirty, too hot or cold water. And in the lever - the inconvenience of cleaning parts located under the sink and behind the mixer.
By what criteria are selected plugs?
First of all, you should determine the price. It should be well understood that the buyer receives for his money - the quality of materials and assembly, design or additional convenience.
Consider a few design features on which the price depends:
- type of management;
The model should be selected based on the type of sink. If it is not possible to remove excess water, install a foot valve without overflow. Option - the replacement of the siphon more practical.
As for the control mechanism, it is necessary to clearly define the goals.If hand-washing water is used in the sink, it is unlikely to be too dirty after use. Problems with lowering the hand to the spring valve will not arise.
But if the plans are washing dirty shoes or greasy items, it is better to give in to the natural disgust and buy a lever device.
The role of the brand is difficult to overestimate when choosing reinforcement. The reputation of the brand is not only advertising, but also an indicator of the real quality of the goods. Before buying, it is advisable to read user reviews, take into account their claims to different manufacturers.
The bottom shut-off valve is a small detail, but it can deliver unpleasant moments if it quickly fails. It is better to pay for a couple of hundred rubles more and buy a reliable beautiful stub that will serve for several years without breakdowns.
Detailed installation instructions
The bottom valve, which is included with the mixer, is installed in stages.To install it, you will need simple tools and sealant. All work can be done independently.
The only caveat: in the standard set, all tools with sharp edges that can damage the shell cover. It is advisable to prepare gaskets in advance and press the metal parts through them to protect the plumbing.
Stage 1 - preparatory work
Lever and hoses through the hole lead down under the sink. Usually mixers are completed with flexible tubes. If the model comes with rigid hoses, they will have to be bent on their own.
It is important to do the work with extreme care so as not to damage the walls of the pipes, otherwise they will quickly rot and leak.
It is extremely undesirable to file the product, because the chips can easily get into the mechanism of the crane. During operation, problems will arise that will lead to premature abrasion and wear of parts.
If it is impossible to do without cutting the hard tubes, after work is finished, thoroughly rinse all the structural elements with a powerful stream of running water.
The crane is fixed with a gland nut. If there are doubts about the reliability of the installation, you can use a sealant as an additional method of fixation.
Stage 2 - assembly and connection of parts
With the help of nuts with rubber gaskets, hoses are connected to the supply pipes. It is necessary to follow the shape of the bend. If it is in the shape of a letter U, everything is fine: the water will flow freely.
But the S-shaped bend is undesirable. Extra obstacles will create conditions for an uneven increase in pressure in the system, which in a year or two will lead to leaks at the joints.
The shut-off valve is placed in the drain hole of the sink and collect the needles. They are laid crosswise using a special plastic connector. The clamp itself is twisted with a screwdriver. Get a simple but reliable cross-shaped design.
Stage 3 - installation of the lever and siphon
The needle must be connected to the lever and attached to the eyelet of the device, as shown in the diagram below.
It remains only to bring the corrugation from below and fix the siphon. It is important that the cork tightly closes the drain hole, so immediately check the quality of the assembly system.
It is necessary to open the faucet and observe how the plumbing works for 3-5 minutes.
If the water goes well into the sewer, and the joints remain dry, everything is in order. If signs of leakage appear, tighten the nuts.
If, even after this, the joints are wet, you will have to completely disassemble the system and redo the work, since the installation is clearly done incorrectly. Sealing tape can correct the situation, but hardly for a long time.
Stage 4 - Checking the tightness of the plug
Work can be considered completed if the siphon does not leak, and the shut-off valve tightly closes the drain hole.They check it like this: they lower the cap, take the maximum amount of water in the sink and leave it for half an hour.
The indicator of the correct operation of the device is a constant level. It is better not to rely on your own eye and make a mark on the shell with a marker.
If after an hour the water remains at the same level, the shut-off valve is ideally mounted. Minor changes - a reason to check the tightness of the lid to the bottom of the sink.
Conclusions and useful video on the topic
Bottom plugs are used infrequently so far; therefore, it may be difficult to select, install and replace them. We offer video materials that will help prevent problems.
Detailed video installation bottom valve:
Devices of the click-clack system of the AlcaPlast brand:
Video review of the model Nicoll SAS L2264:
Overview valve of the Italian brand Webert:
Each of the bottom valve buyers has their own goals. It is convenient for someone to wash in a sink filled with warm water, while others prefer to wash or wash small things.
Concepts of convenience are also significantly different.To eliminate the error, before buying you need to clearly understand how the device will be used. If you need to install a new plug instead of a worn one, you should choose the same model.