Living in a private house will teach you a lot. You easily master the specialty of plumbing and repairman, if you learn to install a counter on water, without which humanity simply does not think its own existence. Install or replace the counter will now be available. We recommend to master the specialty of sanitary engineering.
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Installation of meters for water
The rise in prices for utilities pushes to a constant saving of water, gas and electricity. Therefore, the installation of water meters is an actual problem, which can be solved and it is necessary to do it yourself.
It is estimated that the purchase of the meter and its installation pays off for an insignificant period of time due to the saving of energy costs. If you have not made a replacement or installing the meter on water, it's time for decisive action. But, one thing if you live in a new private house, or in a new apartment building, there is installed a new plumbing and new communications. But if you live in an old house, the pipes of which have rusted for a long time, here, first of all, it is necessary to put in order the water supply system, clean it from pollution, consult with professionals how to clean rust. And only after you have done the above work, look into the selection of the water meter. How to choose and install the best water meters?
The best water meters, what they are
principle of operation
To begin with, counters should be distinguished according to the principle of operation. There are such types of counters:
• Electromagnetic
• ultrasonic
• Mechanical
• Vortex.
Regardless of the principle of operation, the meters are divided into classes of non-volatile and volatile ones. The most common are mechanical non-volatile cold and hot water meters. Externally, the counters can be distinguished by their marking on the front side. The marking of counting devices for cold water means "up to 40 degrees", and for hot water it means up to 130 degrees.
construction of counters
The design of the cold water counter is composed of the following elements:
• Enclosures
• impellers
• gear transmission
• Counting unit for counting the volume of the flow of water.
When choosing a meter for water, the following parameters must be taken into account:
• type of water being measured (cold or hot)
• location of the meter (for domestic or industrial use)
• type of meter and installation (pipe layout parameters).
Requirements for the design of meters for water
Recall that there are three classes of metrology of water meters, labeled with "A", "B" and "C". According to the requirements for metrology of the European Directive MID 2004/22 / EC, applied to measuring instruments, now instead of the usual marking on the meters will indicate the ratio of water flow, namely the nominal to the minimum Q3 / Q1 (R).
Strict requirements for the antimagnetic protection of meters have been determined, according to which "the effect of electromagnetic interference, the limit of which is half the maximum permissible error, is permissible".
Linear sections of the meter installation before and after the installed counting device must correspond to the sensitivity classes - U and D.
In addition, a mandatory condition for the installation or replacement of water meters is the regulated verification of the meter, confirmed by the relevant verification certificate. After these conditions are met, you can start installing the counter.
The most common scheme for installing a water meter
The installation scheme for any meter involves the following activities:
• installation of a ball valve (stop valves)
• coarse (mechanical) filter
• Direct meter settings
• check valve.
The sequence of installation and installation of elements, without which the circuit does not meet the requirements of monitoring bodies, depends on the location of pipeline sections (vertically or horizontally). The only correct condition is the installation of elements along the direction of the flow of water.
installation of stop valves
Shut-off valves are designed to supply water to the apartment.
Before starting the installation, it is recommended to arrange the components of the components in a single line. Recall, the sequence will be as follows: a stopcock, a coarse filter, a counter, a reverse valve. Reliability of correctness of direction should be confirmed by arrows on instruments, which must be located on one line.
It is recommended to purchase materials for high-quality joint sealing. It is a linen towel, sealing paste and polyamide threads with silicone grease. We begin the installation by turning the filter on the stopcock. When winding the filter, it is recommended to use a linen pack. The number of turns of a linen thread in most cases is 5.
A necessary condition is the arrangement of the filter with a settler down. From the pakli we make a thread with a diameter of 1 mm and tightly wind the thread along the thread diameter, providing a tightness of closure. Then spread the paste around the thread with a circular motion. After applying the paste, tighten the filter tightly.
counter Counter
The counter is threaded using nuts and nuts ("American"). We will suggest that rubber gaskets are used for installing the counter on cold water, and paronite gaskets for the hot water meter.
The density of the connection of the branch pipe is carried out with the use of linen tow and paste, which is applied similarly, as for the stop valves. Initially, screw the filter on the filter with the union nut, and then wind the meter itself. The second branch pipe of the meter is connected to a non-return valve.
The final assembly is a chain: the handle of the shut-off valve up, the filter settler down, the dial of the counter upwards with the rotary impeller down.
The required side of the meter in the pipeline is produced in the off state of the water. If the counter of the counter is produced for the first time, then it is necessary to cut off the old valve, therefore, for the work, it is necessary to use the services of a gas welder.
The cut in the water line is made using a ball valve with a drivetrain and a threaded nipple.
You will be fucking lucky if you only replace the meter after verification. A pair of fittings for the transition, and now the water meter can be considered installed.
After the installation of the water meter is completed, it is necessary to check its operability. We turn on the water supply to the pipeline, slowly open the ball valve and check the absence of leaks and the movement of the impeller of the mechanical counter. With a favorable outcome and system performance, you can easily call a representative to seal the counter.
As always, a lucid video rushes to the aid, which will thoroughly represent the process of installing the water meter.
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