Installation of a ball valve on risers
Shut-off valves are used in almost any residential and industrial premises. The installation of a ball valve can be carried out in a car stove, on water pipes and other outlets where it is necessary to control the flow of water.
Principle of operation
A ball valve is a shut-off valve where a metal or rubber ball acts as a shutter. It is connected to a lever or a special device that controls its position (reducer, pneumatic or electric drive). The ball has a hole, which must be the same size as the diameter of the connected pipe. When you turn and open the device, these holes coincide and water begins to flow. If you turn the lever in the other direction, the flow stops.
In apartments, houses and utility rooms, a lever mechanism is used, but to control the operation of the device on large-diameter outlets, it is necessary to use drives. The main advantage of this mechanism is that you can control hot and cold water with one handle.
Sometimes ball valves are even installed in the stove of a VAZ car to control the antifreeze fluid. But this is not the best way out - dust and dirt are clogged under the ball, which significantly reduces its service life.
Types of ball valves :
- Flanged. They are mounted on large-diameter communications. A distinctive feature is the presence of an additional sealing element near the locking ball, which ensures the maximum level of sealing. Therefore, they can be used for pumping gas and oil products, heaters and installed on heat converters;
Photo # 8212; flanged
- Fitting. The most common. They can be dismantled many times, the locking mechanism can be either static or smooth installation type;
Photo # 8212; choke design - Welded. It is installed only once, it is used in main water pipelines, in conditions of increased head pressure and if a well-free installation is needed.
According to the material of the case, there are polyethylene and metal (copper, stainless, steel). The former are necessary in special working conditions, for example, where the pressure exceeds 10 bar.
Installation
Correct installation of the ball valve can be easily done by hand. Consider several options for mounting the device.
Pipe mounting:
- First, you need to drain the water from the entire system. To do this, turn off the water supply and open the valves;
- Before starting work, you need to select a device. You can buy ball valves with a double-sided external or internal thread, models where on one side there is an American connection, and on the other - a thread, etc. In addition, please note that the size of the valve opening must necessarily coincide with the diameter of the communication;
- At the installation site of the future water supply tee, the pipe must be cut and prepared.
Two types of crane-axles
There are two types of faucet axles in bathroom and kitchen faucets: with a worm gear and a rubber gasket, and with movable ceramic plates that block the flow of water.
In order to change the crane box, you must first buy a new one. It is easier to do this if you unscrew and bring to the store the one that needs to be replaced, since the valve axles in the mixers may differ in some parameters, including the length and diameter of the threaded part (1/2 or 3/8 inch), the seat for the handle (square or spline connection for 20 or 24 slots).As a rule, consultants in plumbing stores are able to select the required product according to the sample.
The difference between an axle-box crane with a stem with a rubber gasket and a design with movable ceramic plates is as follows.
•
The first ones include a stem that is extended by means of a worm gear and that closes the valve seat with a rubber gasket. When worn out, such a gasket is easy to change, and it costs a penny. Unfortunately, replacement of the gasket is often required;
•
The valve-box with ceramic plates does not require rotation of the mixer rod (handle) in order to open the valve completely. It is enough to turn its flywheel only half a turn. The ceramic axle-box is arranged simply: a ceramic plate with a hole is fixed on the rod, the second plate (with a hole of the same shape) is fixed immovably. A slight turn of the tap and the alignment of the holes on the plates opens the way for water.
Cold and hot water. Which side?
Depending on the type, a thread is cut on it or the outlet is simply cleaned of dirt and dust (when dismantling the old fittings);
When the winding is over, you need to additionally check the connection point and turn on the water supply. If water has flowed from the lower section of the tap, then it must be removed and the oil seal checked (some unscrupulous manufacturers sell devices without them at all). In some cases, you have to install it yourself or additionally seal it with flax rope or special fillers.
Installation tips choke ball valve:
- If the thread comes in very easily, then wind up some more sealing tape. With a sufficient amount of "fum", the fittings should be screwed in with little effort;
- The liquid seal is only used for devices with a diameter of less than 5 centimeters, for example, sink or sink outlets;
- The tape winding scheme is very simple - you need to wind it in the same direction as the thread is screwed in;
- Do not push hard when screwing on the tap - the tap may burst.
Installation of the flanged model is carried out in the same way, the only difference is in the larger diameter of the branch and the size of the valve. It is worth remembering that in flange models it is recommended to use additional rubber seals at the junction of the lock and the pipe.
How to install a welded faucet
On the one hand, this installation process is much easier than a threaded one - there is no need to cut the threads and process them with seals. Instructions on how to install an angle welded ball valve:
- The section on the pipe is measured where the installation will be made. A certain section is removed, the section is cleaned and degreased;
- The crane is installed and centered. For this, you can use both improvised means and special devices. For example, you can use metal reinforcement or a clamp-clamp with a wide shackle. After the welding machine is warmed up;
- Depending on the material from which the pipe is made, additional couplings may be required.They are put on the pipe, a crane is installed in them and welding is performed;
- After finishing work, you cannot turn the tap and turn on the water for some time - it must first cool down. If dismantling is necessary, the pipe is simply cut, a crane is taken out of it, and another is welded or screwed in its place.
Photo # 8212; steel welded
This type of connection is useful for underground piping, under carpet or heating installations. The price of a welded ball valve is slightly higher than a choke valve, therefore, using it, the total estimate will be slightly less than when working with threaded connections.
Check out articles on similar topics:
Worm drive and ceramic type crane trailers: features and differences
For kitchen and bathroom piping faucets, there are two different types of crane towers. This is a crane box with a worm gear equipped with a gasket, as well as with movable plates made of ceramic material, which ensure that the water pressure is shut off. Before unscrewing the crane box, it is best to buy a new part first. However, you can go the other way: unscrew (unscrew) the old part and come with it to a plumbing store, where a specialist will help you find a similar product.
Before unscrewing the tap on the mixer, you should learn the difference between the version with a worm screw and the version using ceramics. The crane of the first type has a retractable rod, the movement of which occurs thanks to a worm gear. In this case, the seat of the valve mechanism is sealed with a gasket, which needs to be replaced quite often.
A product with ceramic plates in its construction is more reliable and requires only half a turn of the mixer handle to ensure maximum head. Ceramic plates inside such crane boxes rarely break. Theoretically, they can be replaced, but a simpler repair option in this case would be to replace the entire part. To complete such a procedure, you will need nothing more than to unscrew the out-of-order crane-axle and install a new one in its place.
Ball valve installation
In this article I will tell you how to properly install a ball valve on water supply and heating pipes, but first I will tell you a little about the pros and cons of ball valves. At the moment, such valves are the most common, popular, and very practical and convenient, their undoubted advantage over the old-style taps is that there is no need to change the gaskets, since they have a different device and principle of operation. There is a ball inside the tap, in one position it is open, and when turned 90 degrees, the water shuts off, but there are big disadvantages to ball valves: With poor water, the ball can become slagged, and if you do not turn it for a year, especially in hot water, then close it it becomes very difficult, and sometimes impossible, so you need to turn it at least once every 2 months in order to bring down salt deposits.
If rusty water comes from the tap, then when opening and closing, scale or sand can damage the surface of the ball, and then the tap will pickle in the closed position. On ball valves of average quality, with frequent opening and closing (most often found in hot water and heating), it starts to flow from under the oil seal, of course it can be tightened, but in many cases the nut that tightens the oil seal rotates with the lever and continues to drip, and some taps do not have an oil seal at all and if it leaks, you can only throw it away and install a new one. And one more minus, you cannot install a ball valve in a room where the temperature may be less than 0 degrees in winter, when the water freezes, it breaks.
How to install a ball valve on a pipe
When installing a ball valve on a pipe, you must:
one.If you are replacing a tap, then you need to remove the old one, clean the thread from flax, and try to screw on the tap. More than once I have met with the fact that when removing the old valve, 2-3 turns rot, in which case it is necessary to cut the thread. The valve on the pipe must be screwed on at least 4 turns!
2. If, when dismantling the old valve, the thread remains in good condition, but during installation the valve is screwed in less than 4 turns, be sure to drive the thread with a die!
3. Check, without flax, the tap turns on 4-5 turns, wind up flax. and twist 4-5 turns.
4. If you are installing a water supply system or heating, then first measure exactly where the ball valve will be installed, cut it off in the right place, cut the thread on the pipe, and wind it 4-5 turns.
And as usual, a few tips, if you have a centralized heating supply, and the system has high pressure, use Bugatti ball valves, they have proven themselves very well, do not install valves on which there is no oil seal, if it starts to leak, then you will not be able to fix it before replacing the tap.
Ball valves are with internal threads on both sides, internal - external, external - external, and internal on one side, and American on the other, so calculate and buy those that are needed for further connection of water supply or heating.
Watch the video, installation, installation of a ball valve, and how to thread a pipe.
What is required to work safely?
When the apartment is hot enough, and the owners have a desire to shut off the heating radiator, then you can consider installing a temperature regulator on the batteries. In the presence of a bypass, a thermostat is installed on the radiator, which regulates the temperature in the room. If there is no bypass, then the regulator cannot be installed, because this can regulate the temperature not only in this apartment, but also in the neighbors in the riser. In such a situation, you just need to replace the heating radiator and install a bypass.
Bypass assembly and functions
With the help of a bypass, repair work can be carried out at any time, even in winter, when there is hot circulating water. One has only to turn off the tap in front of the radiator. The water will immediately stop flowing into the pipes, and the circulation will go through the bypass itself. This will allow the owners of the apartment not to go down to the basement and not block the common riser.
The device itself consists of pipes that have a smaller diameter than the pipes of the outlet and supply lines. The presence of two ball valves allows you to make the correct shut-off of the radiator and direct the circulating water through the bypass.
The bypass functions are to regulate the energy carrier. In case of great heat in the room, it allows you to shut off the system in it for a while. Then hot water will not flow into the radiator and the room will immediately cool down. When replacing the battery, you need to turn off the water, and after the installation is completed, open it again.
If the circulation of water in a system with an electric pump fails, the bypass will cut off the supply of hot coolant to the pump. This will happen through the branch pipe. At the same time, the valve opens, and water is directed directly through the central pipe, and circulation occurs, but without a pump.
The bypass must be installed together with the battery. But experts also recommend making the bypass pipe on site.
When performing repair work, inexperienced craftsmen often face the problem of determining the position of the valve. This question is especially acute if there is no control mechanism on the device. How to distinguish an open from a closed valve in different situations, read on.
Household pipeline fittings
Correct installation of ball valves. Advice.
Install, replace # 171; ball # 187; crane in this there is nothing complicated. Anyone can replace him.Ball valves got their name due to the fact that a ball is installed inside it that blocks the pipeline through which the working medium moves. Ball valves are simple and reliable to use, thanks to this they have gained popularity.
The main thing is to choose the right one for you. Their sizes are standard and are measured in inches. the design is simple. The body consists of two parts, connected by a thread, inside # 171; ball # 187; with a through hole, stem, oil seal, handle. The most popular, so to speak, at home are the sizes: 1/2 # 8242 ;, 3/4 # 8242 ;, 1 # 8242; there are more. Before buying, I advise you to find out the country of the manufacturer. It is advisable to buy Italian, Spanish cranes. They are of higher quality and stronger. Chinese, although visually they cannot be distinguished visually, but you can pick them up by weight, the Chinese will be much lighter than the European ones. You need to install the tap correctly. If it is not installed correctly and breaks down during operation, you can get a leak. As indicated above, the body consists of two parts, one of the sides is molded in one piece and the other part is its nut, which is screwed along the thread to one another. With the integrally cast part of the valve, you need to screw it to the pipeline that comes out of the riser. In this case, if the valve breaks in half under the influence of different conditions, you will have the opportunity to quickly shut it off because the ball itself inside will remain on the one-piece cast part of the valve. Otherwise, a ball will fly out and one nut will remain on the pipeline. Cranes are afraid of frost. If your taps are installed somewhere on the street. Let's say on a watering pipeline. For the winter, naturally, the water is drained, and it is better to leave the tap in the open position. Since water can collect somewhere, the remains will not all go away and the tap will simply burst.
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21.07.2014
Shut-off valves on water pipes - an inattentive attitude to this thing can cost you a significant amount.
Just imagine: a tap on a cold water supply pipe breaks down. Obviously, there is a fountain in the apartment. And if you are on vacation, then the fountain quickly turns into a lake and all this flows to the neighbors below. And if they are also on vacation / at work or something? Another floor below. And so on. You can figure out the financial side of this case yourself.
The tap is where the leak is most likely to occur. The pipes are welded securely. If not, it will be noticeable immediately, but problems with the crane accumulate gradually. So let's try to figure out which of them is more reliable in operation.
Ball or valve?
For an apartment, only these two options are possible. Available at any plumbing store, there is an assortment for pipes of different diameters. We look at the pros and cons of each.
Valve
The main plus is maintainability. And this is the main disadvantage. Such a crane is a little more complicated both in the device and in operation. It needs to be twisted and unscrewed, often you don't want to bother with this, and besides, the gaskets and seals wear out regularly, the oil seal begins to leak. We changed the gasket - for the time being, everything is fine again.
The valve can be used as a shut-off and control valve. Ball only shut-off. This is an iron rule - the ball valve has only two positions: open and closed.
Ball
Easier in design and operation. They turned the flag - and it's done. There are compact flags (butterflies). Convenient in that they do not take up extra space (the butterfly does not protrude beyond the dimensions of the pipe).
Two types of crane-axles
There are two types of faucet axles in bathroom and kitchen faucets: with a worm gear and a rubber gasket, and with movable ceramic plates that block the flow of water.
Crane axle boxes of two types
In order to change the crane box, you must first buy a new one.It is easier to do this if you unscrew and bring to the store the one that needs to be replaced, since the valve axles in the mixers may differ in some parameters, including the length and diameter of the threaded part (1/2 or 3/8 inch), the seat for the handle (square or spline connection for 20 or 24 slots). As a rule, consultants in plumbing stores are able to select the required product according to the sample.
The difference between an axle-box crane with a stem with a rubber gasket and a design with movable ceramic plates is as follows.
•
The first ones include a stem that is extended by means of a worm gear and that closes the valve seat with a rubber gasket. When worn out, such a gasket is easy to change, and it costs a penny. Unfortunately, replacement of the gasket is often required;
Crane axle box with rubber gasket
•
The valve-box with ceramic plates does not require rotation of the mixer rod (handle) in order to open the valve completely. It is enough to turn its flywheel only half a turn. The ceramic axle-box is arranged simply: a ceramic plate with a hole is fixed on the rod, the second plate (with a hole of the same shape) is fixed immovably. A slight turn of the tap and the alignment of the holes on the plates opens the way for water.
Crane-axle box with ceramic plates, its device
In principle, the ceramic plates inside the movement can be swapped. However, they break down quite rarely, and replacing the crane axlebox entirely is much easier. Compared to a rubber gasket, it is more expensive to change a crane-axle box with ceramics, but the convenience in everyday use of the mixer is worth the money, and the service life of such products is very long. The only thing that can limit the use of ceramic faucet-boxes is hard tap water, which has a large amount of solid inclusions that have abrasive properties due to which the ceramic plates are erased, cease to adhere tightly to each other, allowing water to pass through. Often disassembling and cleaning these plates from scale and rust, the problem of water leakage is solved.
And in which direction do your taps open and close?
But it is inconvenient to open taps on large-diameter pipes with a butterfly. It is better to take here with a flag-handle.
Due to the simplicity of the design, the durability of the ball valve is higher. With the same (and sufficiently large) number of closing / opening cycles, the valve will flow much earlier. But! At home, you are unlikely to open them as often. This is not a kitchen faucet. And this is where the main problem of ball valves opens up.
The ball turns sour during operation. And then it is not so easy to block it. Therefore, it is impossible to leave the ball valve in a half-open state. The harder the water, the faster the mirror of the ball will "grow". As a preventive measure, you can periodically (every two to three months) open and close the tap, thus removing scale. The only question is not to be lazy.
And the main thing is that it is impossible to repair the ball valve. Complete replacement only. In contrast to the valve.
Removing the crane axle box
Before carrying out any work on the mixer. including changing the crane-axle box, you should turn off the water, both cold and hot. If there are no cranes in the apartment for this, you will have to block off the entire riser at the entrance. Before starting work, it will not be superfluous to make sure that the water is shut off by opening both taps.
To replace the crane-axle box, you will need: a screwdriver (flat) and an adjustable wrench (better than zero).
The sequence of work is as follows.
1.
The flywheel is removed from the crane box, for which a colored plastic plug is removed with a screwdriver, the fastening screw is loosened, access to the stem and the crane box itself is opened;
2.
In order to "unscrew" the crane-axle box, it is sometimes enough to have a key on "17". Ceramic valve axles are often equipped with locknuts, which must first be loosened using an adjustable wrench.You can unscrew the valve-axle box with a square stem head using a wrench on "7", turning the stem counterclockwise, as shown in the photo.
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Igor Kulbeda
So that the ball does not turn sour every time you turn it when you check the meter readings.
Ball valve - This is a shut-off device for shutting off (cutting off) the supply of the working medium transported in the pipeline, which is under pressure with a quarter-turn working stroke.
Correct installation and proper operation of the ball valve will extend its service life and ensure reliable and safe operation of pipelines.
Example of the construction of a brass ball valve STC.
1. Body - nickel-plated hot-pressed brass CW617N + Ni; 2.
Which way to turn the tap on the battery.
Shutter ball - chrome-plated hot-pressed brass CW617N + Cr; 3. Seat rings - Teflon (polytetrafluoroethylene) with the addition of carbon and silicon-based thermal additives P.T.F.E. + C + EM; 4. Stem - hot-pressed brass CW617N; 5. Stuffing box seal - Teflon (polytetrafluoroethylene) with the addition of carbon and silicon-based thermal additives P.T.F.E. + C + EM; 6. O-rings - EPDM rubber (ethylpropylene rubber); 7. Support washer - Teflon (polytetrafluoroethylene) with carbon and silicon-based thermal additives P.T.F.E. + C + EM; 8. Stuffing box bush - hot-pressed brass CW617N; 9. Handle fastening nut - hot-pressed brass CW617N or galvanized (chrome-plated) steel; 10. Handle - galvanized steel with PVC coating Steel + Zn with PVC. Ball valve closes by turning the knob clockwise 90 degrees, Opens by turning 90 degrees counterclockwise. The parallel position of the lever to the axis of the valve indicates that it is open, and the perpendicular position of the handle to the axis of the valve indicates that it is closed.
Installation of a brass ball valve.
An employee with sufficient qualifications may be allowed to install (operate) the shut-off valves.Before installation valve to check its compliance with the documentation for the pipeline. Install the valves only after preliminary cleaning of the internal parts of the pipeline. Prepare the valve for installation in the following way: - remove the plugs present on the valve and pipeline; - check the cleanliness of the internal and connecting surfaces of the valve and pipeline; - remove preservative grease from the valve (if any). the valve on the pipe, it should be held with a wrench by the octagon (hexagon) of the body from the side of the screwed-in pipe. From the opposite side, it is strictly forbidden to hold and screw the pipe or screw the valve onto the pipeline. The same procedure for dismantling. If this rule is not observed, the threaded connection holding both parts of the valve body may loosen or turn, which will lead to the loss of the valve tightness and will require replacement.
| WRONG | RIGHT |
During installation, it is allowed to use a tool corresponding to the dimensions of the pipe and valve, it is not allowed to use a pipe (gas) wrench. It is forbidden to lengthen the keys or use additional levers. The valve and the pipeline during installation must be coaxial.
The valve can be installed together with the pipe in any position convenient for the consumer, which in the future will be able to provide maximum ease of use and quick access to the valve. The threaded connection of the valve and the pipe must be sealed using winding or sealants used in hydraulic systems (FUM, flax fiber, sealant etc.). The most effective thread sealing with FUM tape, becausePTFE ensures tightness of the connection (up to 10 MPa and T = 180 ° C), easy screwing on and easy dismantling, PTFE is highly resistant to most aggressive substances, excess FUM is easily squeezed out when tightening the thread. ... this can lead to damage to the valve body. Manufacturers recommend: the maximum tightening torque of the thread of the coupling brass valves DN 15 (DN 15) - no more than 10 Nm, DN 20 (DN 20) - no more than 15 Nm, DN 25 (DN 25) - no more than 20 Nm. The thread at the end of the pipe should not be longer than the thread in the valve, so that after tightening the threaded connection, the end of the pipe does not rest against the O-rings, which can damage the valve.
| WRONG | RIGHT |
The valve is not intended to be exposed to an external mechanical load. When installing pipelines, a pipe fastening structure must be provided that completely excludes the possibility of external mechanical impact on the ball valve, including axial, radial or torsional loads.
| WRONG | RIGHT |
Operation of the brass ball valve.
It must be remembered that the ball valve is designed to quickly shut off the flow inside the pipeline. The valve can be opened and closed only by the handle installed by the factory., using a tool or extending the handle is strictly prohibited. The design of the brass ball valve is not intended to regulate the flow of the pumped medium and the valve can only have two operating positions, i.e. it must be completely open or completely closed... In intermediate positions, due to the fast flow of the pumped medium, the O-rings may be deformed or damaged, which in the future will render the valve completely unusable and will require replacement. To carry out the necessary adjustments, we recommend installing a regulating device after the ball valve corresponding to the characteristics of the pumped medium. It is not allowed to use the valve for media with contamination that can cause mechanical damage to the valve gaskets. Most manufacturers of brass ball valves prohibit their repair. Manufacturers recommend: - if the rotary handle is weakly attached to the rod, tighten the nut (screw) of the handle; - in case of leakage of the stuffing box packing of the stem, slightly tighten the stuffing box nut located under the handle of the valve. Other repairs to ball valves are prohibited by the manufacturers.
... valve
To open a cast-iron or brass valve, turn the handwheel on the stem “counterclockwise”, and close it “clockwise” (Photo 9). Make sure there is no rust on the stem, especially steel, before overcoating. Otherwise, you need to clean the stem and apply a little grease to it.
If the valve stem does not turn at all or with great difficulty, then you can slightly loosen the stuffing box nut and try again. And if there is no liquid in the pipeline, you can do this: remove the flywheel, completely unscrew the stuffing box nut, remove the bushing, then remove the old stuffing box packing and change it to a new one. And put everything together in reverse order (Photo 10).
How to tell if a ball valve is open or closed?
A ball valve of an unidentified model is installed in front of the valve with milling of the neck stem, made in the form of a square for a wrench. Close the tap to shut off the system.
The task is complicated by the following factors: 1) there is no handle on the valve (in most cases, if the handle is parallel to the axis of the pipeline section on which the ball valve is installed, then the valve is in the open position, if the handle is perpendicular to the pipeline axis, then the valve is closed); 2) there is no milled line on the ball valve stem that allows you to determine the state of the ball plug; 3) there is no ball valve rotation limiter.
| If the ball valve had a restrictor, the following actions could be taken by personnel to accomplish this task before removing the control valve cover: - turn the valve clockwise, and then, if the ball valve was in the open state, then the ball plug will block the movement of the working medium and this will allow successful revision work, or the travel stop will not allow this operation to be carried out and the valve will be identified as closed; - turn the valve counterclockwise, and then, if the ball valve was open, it will be identified as open, or, if it was closed, the ball valve will open, after which the personnel will need to close it. |
From the point of view of quantum mechanics, the ball valve is in a state of uncertainty - it is open with a probability of 50% and closed with a probability of 50%. Before the cover of the control valve is removed, it will be in both states at once.
Written by Alexander Osipov to cheer up (2016)
We are all accustomed to the appearance of the radiator - these are sections and a faucet on the side. And every time adults and parents scold children when they touch him. It is quite a common sight, but not everyone knows why this "tap" is needed.
The crane is attached to the radiator for a reason. This armature has its own purpose and more than one.
Opening and closing valves
It is possible to determine whether a valve is open or closed by several criteria, depending on the type of installed device.
Determining the position of the ball valve
To determine the state of the ball valve, you can use:
- control handle;
- groove located on the stem.
The ball valve can be equipped with two types of handles:
- a handle, which is an elongated element attached to the body of the device;
- a butterfly handle, consisting of two similar parts, located symmetrically about the attachment point.
The valve closes if the handle is turned perpendicular to the device and the direction of the pipeline, and opens if the handle is turned in the direction of the axis of the device and, accordingly, the pipeline.
Determining the state of the valve by the handle installed on the device
The following video will help you determine the state of the valve by the handle.
If the handles are broken or for some reason completely missing, is it possible to find out the position of the valve? To determine the state of the device under the circumstances under consideration, you can use the groove located on the rod.
An element by which the position of the valve can be determined
If the groove is parallel to the pipeline, then the valve is open and allows liquid (gas) to pass through. If the groove is located perpendicular to the direction of the pipes, then the valve is closed and the movement of fluid through the system is impossible.
Determination of valve position by groove
Determining the position of the plug valve
In which direction to unscrew the plug valve if there is no handle on the device, and how to find out the position of the valve in this case?
To determine the position of a valve without a handle, you must:
- find a slot on the top of the stem (risk);
- visually find out the state of the device.
Determination of the state of the plug valve in the absence of a handle
To close any type of valve, turn the control knob or retaining rod clockwise. To open the valve, the handle is rotated in the opposite direction, that is, counterclockwise.
Is it possible to leave the heating system without water during the summer?
Do not completely block the water flow to the radiator. Turning off the radiator is possible only for the period of pressure testing (a set of work to identify malfunctions) of the heating system.
Do not leave a heating system with aluminum radiators without water for more than 15 days a year.
What position should the supply cranes be in?
With regard to the supply cranes, it will be correct to do this: close the lower valve, open the upper one.With this position of the taps, the presence of water in the battery for the entire period: spring - summer - autumn - winter will be ensured, there will be no threat of vacuum formation and everything will be in order with the battery.
What will happen if the taps are not turned off?
At the moment of starting and stopping the supply of hot water, all rust flows through the pipes. If the taps are not closed, very dirty water will flow through the battery and the battery may become clogged. However, if for some reason both supply taps should remain in the "closed" position, be sure to open (unscrew) the Mayevsky tap. Otherwise, the radiator may rupture due to the chemical reaction of the additives contained in the coolant and aluminum. Please note that if the radiator breaks, this will not be a warranty case!
And if you turn off both taps?
When the water begins to cool, its volume in the battery will begin to decrease. This will create a vacuum there. Why is he so terrible? Your battery will be under severe pressure once a vacuum begins to build up inside it. It will either deform or crack. To avoid this, after the end of the heating season, the two taps must never be shut off!
How to act when a new heating season is approaching?
After you become aware that the next day the heating will be turned on, remember that at the moment the water is supplied, the most rusty water will flow through the pipes. To avoid clogging the battery, turn off both taps! The jumper (bypass) must be open at this time!
When hot water is supplied, it will go through the bypass. We advise you not to turn on the battery for the first couple of days. Let all the rust pass by your radiators!
From the bypass, the water in the battery will start to warm up slightly, which will lead to an increase in pressure inside the battery, but this should not scare you. A slight increase in pressure can in no way lead to deformation of the radiator.
How to understand that the water is blocked? Help me please..
Therefore, when installing heating devices, a specialist will always tell you where it is better to install a tap on a battery, in which places and joints a frequent accumulation of air is possible.
Sectional crane
Buying such a crane will not take a lot of money. The pricing policy is very acceptable, prices for fittings vary from three hundred rubles to two thousand.
Of course, it all depends on the quality of the material used and on the firm. But it is worth noting that behind the beautiful name is a completely ordinary object, only it costs twice as much. Therefore, before buying, you should consult with a specialist or ask your neighbors.
Starting batteries after an outage - what is the risk?
The long-awaited start-up of hot water in radiators after a summer shutdown is a big event. Residents expect warmth in their apartments and houses.
But let's take a look at this process.
Radiators half spring, all summer and half autumn were inoperative. With the first start-up of water from a thermal power plant, the dirtiest, rusty water will flow through our batteries.
Of course, I don't want our radiators to get clogged from the inside. Imagine what would happen to the batteries if all this water remained inside: premature wear, rust, poor heat transfer. But the crane will come to the rescue.
How to turn on the tap on the batteries and do everything right?
The water is drained from the battery
At the first start of the water, it is necessary to slowly turn the plug and open the tap, it is advisable to substitute a bucket or basin under it, because dirty water will flow from the radiator. I don't want to ruin the floor or carpet. An example of water discharge can be seen in the photo.
In theory, it is necessary to drain the water for two days, then you will certainly keep the radiators intact. But, as a rule, everyone expects warmth and ignores this rule. Therefore, as an alternative, you can drain the water at least at night, and shut it off in the morning and enjoy the warmth and comfort in your apartment.
But don't forget about prevention. Bleed air once a month for the radiator to work properly.
Material on the topic of air and water release in batteries: https://kvarremontnik.ru/kak-spustit-vozdukh-iz-batarei/
Enjoy your winter evenings!
The right approach to overlap
Owners of private houses should not worry about repairs or emergencies, because they have an individual heating system. It is much more difficult for people in apartment buildings. It is especially difficult where vertically installed one-pipe systems are located. Indeed, in any work with heating devices, this process immediately affects the neighbors. That is why it is important to properly shut off the radiator in the apartment without harming others.
During the heating season, interference with the work of the central systems of the house is not allowed. As an exception, overlapping is allowed in cases of emergency gusts or leaks. But if the batteries are connected to the common system correctly, then they can be turned off during the heating season without disturbing the neighbors.
This is possible if the battery connection diagram is made using two taps, as well as a bypass line. When the connection of the devices is exactly this, then the sequence of works on the overlap is simple. First you need to turn off both taps, and after carrying out the necessary work, open them again.
If the house is hot and you don't want to open the window in order to save money, you can turn off the radiator for a while. In this case, it will be better to install thermostats on batteries. With their help, you can maintain a certain temperature in the room.
With the correct connection, the heating battery can be shut off at any time, be it summer or winter. To do this, the tap and the valve, which are located on the inset of the pipes into the collector itself, must be closed. They overlap clockwise, in other words, to the right. However, do not forget about the other residents of the house. They must be warned about the overlap in advance, and also hang a sign on the valve so that no one can open it during repair work.
As can be seen from the above, it is possible to shut off the heating when the piping scheme is done correctly, or in the event of an accident.
In an emergency
If an emergency occurs, and the room is flooded with water, then the situation must be rescued. In such a situation, you do not need to think about anything, but only about shutting off the water in any way. Since in such a situation the neighbors who are below can also suffer.
With a very short run of time, there will be enough time to call a locksmith. If the emergency could lead to a flood, then action must be quick and focused. First you need to turn off the taps on the connections to the batteries. This must be done even without a bypass. If there are no shut-off valves, then it is necessary to call professionals and, if possible, close the riser before their arrival. To do this, you need to go down to the basement and find the point of overlap, that is, two pipes located vertically and close.
For the summer period
When making a shutdown of the heating battery for the summer period, you need to know that each system that has water heating must be filled with water all year round. After all, if there is no water in the pipes, then air will get there, as a result of which corrosion appears. In the systems of apartment buildings, it is impossible to check the state of affairs, therefore, one can only hope for a conscientious attitude towards the work of the employees of utilities.
However, you can do something yourself to save your heating system from damage. To extend the life of the batteries, you need to close the valve on the radiator yourself at the end of the heating season. In this case, utilities, carrying out any repair work, can drain the water from the system, and at the same time, the water will not be able to leave the radiators.
If the radiators are made of cast iron, then there is no need to worry about overlapping, because this material is not afraid of corrosion. When the heating system starts up in the fall, there is no need to rush to open the tap immediately on the first day.It is better to wait and open it on the second day, while letting off the air with a Mayevsky tap. This is to ensure that the pipes are not clogged with rust that travels through the pipes.
Some sources say that the valve on the radiator must be closed in the summer. This is done so that the water, having decreased in volume after cooling, does not form a vacuum in the battery. However, this statement is incorrect. Even if the water cools down, it does not damage the battery.
Under different conditions
Very often there is a control valve on the inlet pipe. It can be used to block the pipe by turning it so that it is perpendicular to the pipe. But still, the main task of the valve is to maintain the desired temperature regime in the room.
If there is no valve, and there are shut-off valves available, that is, ball valves, then you can overlap the heating radiators at any time. At the same time, there is no need to worry about the fact that it may harm someone from the neighbors. It is only necessary to turn the valve at the inlet and outlet of the pipes. This will stop the flow of water through the radiators.
Such an overlap can be done in such situations:
- if necessary, paint them during the heating season;
- when you need to flush the radiator;
- if necessary, replace any gasket;
- when overlap is required for the summer season;
- to cover and remove the battery.
