Maevsky valve – service element of the heating system

Within the domain of residential heating systems, there is an essential yet frequently disregarded element called the Maevsky valve. Even though many homeowners may not be familiar with its name, it plays a crucial role in the efficiency and seamless operation of a heating system. In essence, the Maevsky valve is an essential component that keeps the entire heating system operating at peak efficiency.

Imagine that the heating system in your house is a well-oiled machine that relies on a number of components to keep you warm and comfortable throughout the winter. Notable among these components is the Maevsky valve, which is in charge of removing extra water and air from the heating system. It is a tiny but powerful component. This seemingly insignificant task is actually crucial because trapped air and water can eventually cause the system to become less efficient and possibly even cause damage.

Anyone who wants to maintain the best possible condition for their heating system as a homeowner must understand how the Maevsky valve functions. This valve, which is usually found at the top of a radiator or heating loop, is made to automatically release air from the system as it builds up. This keeps airlocks from forming and guarantees that hot water can circulate freely, which efficiently disperses heat throughout the house.

However, the Maevsky valve is more than a one-time fix. To guarantee its continuous efficacy, it needs to be maintained occasionally, just like any other component of your heating system. Fortunately, most homeowners with a minimal amount of tools and experience can service the Maevsky valve; it’s a relatively simple task. Maintaining the longevity and efficiency of your heating system can be greatly aided by routinely inspecting and, if required, bleeding the valve of excess air and water.

The Maevsky valve plays a crucial role in the functionality of a heating system, serving as a key service element. This simple yet essential component allows for the release of excess air that can accumulate within the system, which can otherwise hinder its efficiency and performance. By enabling the expulsion of trapped air, the Maevsky valve helps to maintain optimal pressure levels and ensures that heat is evenly distributed throughout the house. Regular maintenance and proper usage of the Maevsky valve are essential for the smooth operation of the heating system, contributing to energy efficiency and cost savings in the long run. Understanding the importance of this often-overlooked component can lead to improved heating performance and comfort within the home.

Design and principle of operation

Let’s first define Maevsky’s crane, which is a service valve intended for manual air descent at specific heating system points. The drawing depicts a contemporary tap sample that has the following features.

• a brass case with a nickel -plated coating;
• Wright screw with a conical tip;
• nylon cap with the exhaust hole;
• Highlighting ring made of plastic or rubber EPDM.

A 2 mm calibrated hole was drilled into the end of the case, and an external connecting pipe thread was made. A camera with a side exit and a shut-off conical screw is located inside the case.

The crane operates on the same principle as a needle valve; upon tightening the screw, a cone-shaped tip hermetically seals the main hole. In order to cause the system to faint, the screw is undone, the cone opens the passing cross section, and the water and air exit through the side channel. The plastic cap’s rotation adjusts the exhaust hole’s position.

Historical allusion. In the 1930s of the previous century, a Russian engineer named Ch. B. Maevsky invented a manual air separator. The invention was a substitute for standard tap values in centralized heat supply networks for the purpose of air plug removal. Unauthorized hot water selection from the system was rendered impossible by the installation of new cranes.

How does Maevsky’s vintage Soviet valve appear in the schematic? The plumbing element’s official name is Radiator Air needle-type radiator, type 7073V.

Technical features of Maevsky air separators used in residential and commercial buildings’ water heating systems:

• maximum operating temperature – 120 ° C;
• liquid medium – prepared water or non -freezing coolant (antifreeze);
• working pressure – up to 10 bar (1 MPa);
• The connecting dimensions of the pipe thread – ¼ ”, ½”, ¾ ”, metric – M10 Step 1 mm;
• The service life of a product from high -quality brass is at least 30 years.

Note: Certain crane models are built for a liquid environment of +150 degrees and a pressure of 16 bar (as marked by GOST RU16) for more severe operating conditions.

The scope of application and varieties of cranes

The following uses are known for Maevsky’s manual valves:

1. First of all, the removal of air bubbles from heating radiators of all types – aluminum, steel and cast -iron.
2. Air discharge from towels.
3. Periodic fainting of the problem areas of the heating network – compensators deployed upward, bypass loops (for example, above the front door), risers and other places where air accumulates.

All contemporary radiator manufacturers provide air launching crane installation services. Factory-fitted heating devices have footballs (traffic jams) with a hole under the Maevsky valve. The diameter of the external pipe thread (Gering", ½", ¾ ") determines which battery valve to use.

Reference: The air valve’s Glock external thread matches the standard pressure gauge’s standings exactly.

In the event that air descent needs to be arranged at the system’s trouble spot, an external metric threaded Soviet-style valve (M10 x 1) is purchased. A tap is used to cut the pipe wall, an Ø9 mm drill is used to drill the pipe wall, and a tap is used to screw up Maevsky’s crane with plumbing linen.

Another choice is to install a slotted valve on a diverted pipe and cut a tee in the highway, as shown in the picture below. The technique works well with a cold towel (dawn), as it doesn’t produce threads beneath the air vent.

Although all Maevsky valves operate on the same principle, there are some positive variations in the products that are available:

1. The shut -off valve is made under a slotted screwdriver, a special key or equipped with a handle. In the old version of the product, a bolt with a hexagonal head is used.
2. The needle (cone) that overlaps the hole is metal or plastic.
3. The appropriate “aged” valves shown in the photo are placed on designer cast iron batteries.

Using the handle with the handle is convenient since it makes lowering the air easily without the need for a tool. However, it is unacceptable for the valve to twist anyone, even young children. Thus, the advice is to purchase and install conventional products that have a slot or a tetrahedral key.

Citation. Certain ball valve models are equipped with Maevsky air tires. In this case, the handle option is more suitable, and the valve with the g¼ thread can be taken out and either plugged or replaced with a manometer.

"Maevsky" should not be confused with float-style automatic airbrushers. These latter bear similarities to the principle of action: a needle is used to seal the passage hole, but the air is expelled automatically. These devices come in two varieties: radiator and universal, which are utilized in boiler safety groups.

Installation "Maevsky" on a cast -iron battery

A detailed description is not necessary for the installation of the descent cranes on the feet of steel and aluminum radiators because it is a fairly simple process. With a little force from the key, the rubber ring-equipped valve is neatly pulled, and the nylon cap is then rotated in the proper direction. The exhaust fitting toll down valve, which has a large plastic ring and a hole in a metal casing, is quickly fixed in place.

An additional item is the valve installation in the cast-iron cork of the MS-140 radiator. Some experts assemble a homemade crane by screwing a basic bolt, cutting a thread, and drilling a foot. The solution is very basic and inconvenient; an uncontrollable leak forms when the bolt is weakened and the air is drawn.

How to install "Maevsky" correctly so that the cloistered footer is not twisted:

1. Buy an old -style crane with a landing thread M10 x 1 and be sure to prepare the corresponding taps – number one and second. The so -called machine tap is not suitable – cast iron is too hard, the tool will simply break.
2. Enough the heating device and drill the upper plug first with a thin drill, for example, Ø5 mm.
3. Gently break the hole with a drill Ø9 mm, then remove the chamfer for confidently entering the tool.
4. Cut the thread, alternately passing the hole with taps No. 1 and 2. Check how well the valve is screwed.
5. Holding the thread of the flax, tighten and pull the crane with average effort.

Suggestions. Cutting threads and drilling cast iron shouldn’t be done "on dry." If machine oil isn’t used to lubricate the tool, the working edge will quickly become dull.

Swapping the full-time footpage for a new one with an already-made hole for the "air" is a simpler method. Here, a contemporary valve with an external Gular thread (15 mm) is utilized. The most important thing is to remove the old battery plug with success. To apply "Maevsky" to the MS-140 radiator, watch the following video:

Although the Maevsky valve may appear to be a minor part of your heating system, it plays a vital role in maintaining effective operation. Radiator airlocks, which can impede heat distribution, are less likely to occur when air is allowed to exit the radiator. To maintain the best possible operation of your heating system, regular maintenance is required for this valve.

Maintaining the functionality of your Maevsky valve is an easy yet efficient method to enhance the efficiency of your heating system. Potential heating interruptions during the winter months can be avoided by routinely inspecting for leaks or obstructions and swiftly resolving any problems.

Maintaining the Maevsky valve correctly increases the lifespan and efficiency of your heating system. Ignoring this tiny part can cause bigger issues later on, like decreased heating efficiency, higher energy use, and possibly expensive repairs.

Understanding the significance of the Maevsky valve and adding routine maintenance to your routine for maintaining your heating system will help you save money on energy costs while maintaining constant warmth and comfort in your home. Don’t ignore this seemingly small component; with proper maintenance, it can significantly impact the longevity and functionality of your heating system.

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