Mounting the drain tank fittings with a bottom connection requires the connection of an underwater pipe. An armature of this kind happens with two types of drain columns: equipped with a button or a stem.
Water in a device equipped with a button is released when it is pressed. The drain is carried out automatically. In the same mode, the water descends in the mechanism with the stem. Only in this case, instead of the button, a handle is used, which should be pulled up to the end, and then released.
Modern tanks suggest a button, as it has a more aesthetic appearance. In order for the button not to protrude above its surface, the hole should be at least 40 mm. This size is designed for round mechanisms. There are devices based on an oval button with a double water start, as well as a rocking button. There are mechanisms in the shape of a rectangle.
Device design
Fittings for a drain tank with a lower eyeliner suggests the presence of:
- float;
- guide;
- a glass into which the float falls when flushing the toilet;
- traction attached at one end to the float, and at the other end to a device for locking water;
- membrane valve.
Operating principle
The fittings for a drain tank with a bottom water connection operates as follows:
- When the storage tank is freed from water, the float is lowered along the guide.
- Through traction, a force is transmitted that causes the valve to close. It prevents fluid from entering the tank.
Valve control
The fittings for the drain tank with the bottom eyeliner, the photo of which is presented in this article, are regulated by the usual rotation of the screw for adjustment. It determines the position of the float for traction. In order to maximize the water filling, you need to turn the screw counterclockwise, and to decrease it - clockwise.
In order to adjust the water level in the storage tank, you need to move the float chamber along the rod. If the size of the lever is increased, then you can achieve a level increase and vice versa. To this end, unscrew the fixing screw (lamb), install it in the desired position and fix it. You can move the float through a plastic rod with teeth. In structures in which the rod is made of metal, in order to change the water level, the rods should be bent in the right direction.
Design Nuances
The fittings for a drain tank with a bottom liner has its own distinctive features.
The functionality of the diaphragm valve directly depends on the quality of the water that enters the tank. It must be filtered. Otherwise, you will encounter such a problem as a clogged part. This will stop the water supply to the tank.
The installation of fittings for a drain tank with a lower eyeliner has its own plus, since it makes the structure invisible, but such a device is difficult to repair. When fixing, you may encounter inconvenience due to its location.
A common cause of failure of all locking mechanisms is that the float is sealed, which causes flooding. Water constantly enters the tank and is flushed into the toilet through an overflow pipe.
At the connection point of the device, leakage is possible, the reason of which is insufficient fixing of the nut or a violation of the functionality of the rubber gasket.
How is valve replacement carried out?
The old fittings of the drain tank with bottom connection must be dismantled before installing a new one. Often, device replacement is not required, and it is enough to replace the drain column or valve. When changing the column, it will be necessary to dismantle the tank, but when installing a new valve, no.
Before starting work, shut off the water at the inlet to the tank or disconnect the riser. All water in the tank should be drained. The dismantling with push-button and rod design will be considered.
- The button is removed by turning counterclockwise. It happens that it is attached to the lid of the tank. In this case, the cover is removed with it. In the rod device, unscrew the decorative knob and unscrew the cover that closes the hole in the tank through which the rod passes.
- In the center of the fixture is a drain column. On the side is a filler valve. If the length of the hose allows you to remove the tank and put it directly on the toilet, then go to the next step.
- The collapsible drain column consists of two parts. For ease of repair work, dismantle the upper part. It must be turned 90 °. When you disconnect it, you will hear a click. Inside will remain the bottom of the column. Bolt caps are visible on the sides, through which the tank is attached to the toilet.
- Unscrew the fixing nuts under the tank. This process is feasible both with tools and manually. After draining, there is some water in the tank that, when the nuts are loosened, will flow out. It is advisable to place a rag.
- Lift the tank and place it on the toilet.
- If filling valves are subject to replacement, then flexible hoses should be turned and unscrew by hand. You can use the keys.
- The nut securing the column as well as the valve nut is loosened.
- All parts are removed from the tank.
Now it remains to replace the old elements with new ones and assemble the structure in the reverse order.
What tools will be needed
Regardless of what type of fittings are installed in the drain tank, for its dismantling it will be required:
- wrenches ;
- ruler;
- two adjustable spanners.
Common troubleshooting
When using a locking device, it often happens that the functionality of the drain tank is impaired. In this case, repair work should be carried out. About how to fix fittings for a drain tank with a bottom liner, instructions are given in this article.
The most common problems will be considered, the elimination of which is possible on their own. This requires knowledge of the general design of the valve.
Water does not enter the tank
The most common cause of this problem is clogging of the narrowest portion of the valve. To solve the problem, empty the tank and unscrew the valve together with the lever and the float. You will notice a narrow hole through which water enters the tank. It can be cleaned with a needle or fine wire.
Unscrew the valve on the inlet pipe a little and rinse out the remaining blockages. In the case of free flow of water, it is necessary to tighten the valve and install the valve with a lever and a float in place.
Constant flow of water
There are two reasons for this phenomenon. One of them lies in the warp of the float. In order to repair the device:
- Unscrew the locking ring at the start button and remove the cover.
- Carefully inspect the float. If the part is under water, raise it. As a rule, he clings to the valve lever to drain.
- Check if the mechanism is working properly. To this end, you should drain the water and check how the float rises. Upon reaching the required level, the valve blocks the flow of water.
Over time, the o-ring membrane loses its elasticity. Therefore, it is advised to replace it. Pick the same model.
Problems in the drain tank equipped with a button
When you press the tank button, water enters the toilet. The float goes to the bottom. The hole is closed by a valve. When water enters the tank, the float begins to rise. Having reached the desired height, it helps to close the nozzle opening.
If water is collected in the tank, then the reason should be sought:
- In the wrong position of the float. To do this, remove the cover or fix the problem.
- Perhaps a loose fit of the pear to the drain pipe. In order to check, you need to click on the pear from above. If water does not drain into the toilet, then the reason is found. To eliminate this damage, the pear should be weighted with any load.
- A pear made of rubber has fallen into disrepair. It does not seal the drain pipe and must be replaced. To this end, you should fix the float at the top, remove the old pear and buy a similar size from soft rubber.
To remove the cover equipped with the button, unscrew the circlip around the button. Do not press too hard, as you may break it.
Design features from different manufacturers
Why do you need to know the features of mechanisms with a lower type of eyeliner from different manufacturers? Without this, it is very difficult to fix the problem that can characterize a particular device. Consider the most popular models.
The fittings for the drain tank with bottom connection from Cersanit are distinguished by a simple design. The device is very reliable. It is made according to the classical scheme: the locking mechanism is fixed by means of a pear.
The most common problems in this device are:
- Incorrect setting of the valve responsible for the water supply. As a result, the liquid is quickly consumed.
- Too big pear. Sometimes the device clings to rough thermal walls, due to which water overflows.
In general, the products of this company are distinguished by quality and reliability.
Fittings for a drain tank with a lower eyeliner "Keramin" has its own distinctive feature. It lies in the position of the float. It, as in devices manufactured abroad, is mounted not on the horizontal, but on the vertical axis of the valve. This design is reliable, and the float does not jam.
One of the highest quality models are from the manufacturer Porta. Most models of tanks of this company are made with one button. The pear is regulated very simply. Thanks to this, you can provide any level of filling with water. This fitting is designed for a tank with a small volume.
The same design features are different fittings for the toilet flush tank with a lower water supply from Sanita and Colombo. At first glance, their device will seem too simple. But for repairs, you need to know the principles of restoration.
The fittings for the drain tank with the bottom Iddis eyeliner are made of high-quality ABS plastic.
Material is different:
- strength;
- high resistance to alkalis and acids;
- resistance to wear;
- environmental safety.
Unified regulation of the amount of water supply contributes to the economical use of liquid.
To summarize
We can say with confidence that, if all the rules for installing and using a water filter are observed, the fittings for the drain tank with bottom connection are reliable and comfortable. It does not make noise when filling the tank with water. But it should be noted that devices with a top connection are much cheaper and easier to repair.