22 best automatic and manual air vents: review, quality, price

Air accumulates in closed water supply or heating circuits over time. The reason for this, for example, is the release of gas bubbles during temperature changes.Air locks impede the movement of coolant, destroy pipes and interfere with the operation of the entire system. Air vents are used to bleed air.

What to look for when choosing?

To select an air release valve, carefully study the technical documentation, look at the operating parameters and operating conditions:

Manufacturer country. Despite the fact that a large number of products are produced in China, valves are mainly purchased from Russian or European production. The Chinese have not proven themselves to be the best. After installing such an air vent, the coolant often leaks. As a result, the pressure in the pipes decreases and smudges form on the floor. Sometimes such air vents jam, and the internal elements often become unusable.
View of the manual air vent valve. The second name for such valves is Mayevsky tap. They come with a handle and a locking screw. Manual air vents are more convenient, especially for hard-to-reach places. However, if children live in the apartment, a valve with a screw is more reliable. There is a danger that children will turn the air vent handle and get scalded by the hot coolant during the heating season.
Type of air vent. Valves are divided into manual and automatic.The first ones are simple and practically unbreakable. Automatic ones include a shut-off valve, which makes it easier to replace a faulty air vent.
Coating of the air vent housing. Choose brands with an anodized coating that are not susceptible to corrosion.
Availability of additional functions. For example, models with air bubble traps are available. Brands of air vents with advanced capabilities are more convenient, but also more expensive.
Valve specifications. For example, when choosing, always pay attention to the thread diameter of the air vent.

After choosing a valve, an important point is the correct installation of the air vent in the water supply system.

Review of the best automatic

The automatic air vent serves to relieve gases from heating systems and other closed circuits without human intervention. With the help of these valves, even people who have absolutely no knowledge of plumbing can solve the problem of air locks in pipes. Excess gas enters the inside of the air vent, moves the valve and exits outside. After this, the water raises the built-in float and the inlet valve closes.

Uni-fitt 1/2″ with side outlet

An Italian-made extractor removes gases from heating and other closed systems. Withstands pressure up to 10 bar, maximum temperature up to 100 ˚С. Made of nickel-plated brass. Attaches to the system using a thread. The air vent has a bottom connection and a side outlet. Typically used in combination with shut-off valves. The coolant is non-freezing liquids and water. The shut-off valve is made of silicone, the cap is made of polyethylene. Height - 64 mm, diameter - 56 mm.

Advantages:

warranty - 3 years;
reliability;
low price.

Flaws:

There is no o-ring on the thread.

Price: 356 rub.

UNI-FITT 1/2″

The automatic drainer from Italy has a bottom connection and a top outlet. Used to remove air pockets in closed water supplies. For ease of operation, the air vent is combined with shut-off valves. Used in heating systems with water or non-freezing coolants. The air vent is made of nickel-plated brass with a polyethylene cap and a silicone shut-off valve.

Coolant temperature up to +110 ˚С. The highest liquid pressure is 10 bar. The air vent is connected in the upper plane of the heating system strictly vertically. Installation using 1/2″ threaded connection. Diameter - 31 mm, length - 76 mm.

Advantages:

warranty - 3 years;
Nickel plating protects against corrosion;
reliable;
auto.

Flaws:

there is no o-ring on the thread.

Price: 368 rub.

Uni-fit 1/2″ O-ring

Made in Italy, has a bottom connection and top outlet. Removes gases from closed systems with water or non-freezing coolant. Additionally, cut-off valves are purchased for successful bleeding. The body is made of nickel-plated brass. The cap is made of polyethylene, the shut-off valve is made of silicone.

The temperature of the coolant used is no more than 110 ˚С. Pressure - no more than 10 bar. The air vent is placed in the upper part of the heating system strictly vertically. Length - 73 mm, width - 39 mm. The diameter of the threaded connection is 1/2″.

Advantages:

nickel plated;
warranty - 3 g;
rubber gasket on the threaded connection;
automatic operating mode.

Flaws:

high price.

Price: 368 rub.

Heizen automatic 1/2″

A Chinese-made diverter with an angular float-type connection.Used for automatic release of gases in closed systems of water coolants or antifreeze liquids such as ethylene glycol or propylene glycol. The air vent is made of high-quality brass alloy coated with a nickel-plated film.

It has a float design in combination with a lever mechanism. Used in radiators, convectors, heating risers. Diameter - 1/2″. The operating temperature of the coolant is up to 120 ˚С. Liquid pressure - 10 bar.

Advantages:

side connection and top placement of the outlet channel simplify the installation of the drain;
the air vent is less sensitive to the quality of the coolant due to the spring-loaded spool platform;
automatic, does not require human intervention.

Flaws:

short warranty period - 1 year.

Price: 398 rub.

AQUALINK automatic 1/2″

The Chinese-made float-type lifter operates automatically without human intervention. The air vent material is not subject to corrosion due to the use of high-quality brass coated with a nickel-plated film. Durable housing that can withstand high coolant pressure. The diameter of the threaded connection is 1/2″ suitable for most heating devices. The coolant temperature does not exceed 120 ˚С. Direct connection. Warranty - 2 years

Advantages:

improves heat transfer by bleeding the air lock, which prevents the pipe from filling with coolant;
improves fluid circulation;
eliminates noise in pipes;
prevents corrosion of the internal parts of pipes resulting from the accumulation of gases.

Flaws:

quickly fails.

Price: 434 rub.

Heizen 1/2″

Italian-made float-type diverter.It is triggered automatically when an air lock accumulates in the pipe, without requiring human intervention. The air vent body is made of high quality brass and covered with a nickel-plated film, as a result of which it is not subject to corrosion. Due to the density of the material, the tap can withstand high pressure in the pipes. Used for closed systems with water or non-freezing coolant. 1/2″ diameter thread fits most heating appliances. Connection type: direct. The operating temperature of the coolant is up to 120 ˚С.

Advantages:

removes the plug accumulated in the upper part of the radiator, improving the heat transfer of the heating device;
the heating system warms up evenly by removing air cavities;
getting rid of noise in pipes;
warranty - 6 years;
protection against corrosion of internal pipe cavities caused by air bubbles.

Flaws:

there is no o-ring on the thread.

Price: 501 rub.

TIM BL5814

An automatic direct connection device that includes a safety valve that allows you to replace air vent elements without draining the coolant from the system. Made from high quality brass. Makes it possible to bleed gases from the system without human intervention. The highest temperature of liquids is 100 ˚С.

The 1/2″ threaded connection diameter is suitable for most heating devices that use water or antifreeze glycols as the coolant. The highest pressure in the system is 10 bar. The air vent is used in heating systems, water supply systems, and also in air conditioners.

Advantages:

eliminates humming in pipes;
protects against pipe corrosion because it removes air bubbles;
vertical working position;
presence of a shut-off valve.

Flaws:

no nickel plating.

Price: 327 rub.

AQUALINK float 1/2″

A Chinese-made automatic diverter that allows you to remove air pockets from closed water channels with water or non-freezing coolant without human intervention. The air vent body is made of high quality brass coated with nickel film. Supplied with O-ring. Inside the body there is a steel spring and a polypropylene float. The highest coolant temperature is 110 ˚С. Liquid pressure - up to 10 bar. The diameter of the threaded connection is 1/2″. Float design with lever mechanism.

Advantages:

reliability;
prevents pipe corrosion caused by air accumulation;
automatic release of gases;
eliminates humming in pipes.

Flaws:

warranty - one year;
overcharge.

Price: 968 rub.

VALTEC VT502NH

This is a direct, automatic float air vent that removes excess air from a closed heating system. Can be used for any liquids that are non-aggressive to surfaces. A filter is installed in front of the diverter to ensure long-term operation of the valve. The air vent can be repaired if necessary.

The shut-off valve helps to carry out work without the need to drain the coolant. The body is made of high-strength brass. Inside there is a steel spool spring with a nylon holder. The air vent kit includes a rubber gasket. Withstands liquid pressure of 10 bar and the highest media temperature of +110 ˚С. The diameter of the threaded connection is 1/2″. Lateral location of the exhaust valve.

Advantages:

works up to 30 years;
eliminates noise in pipes;
protects against pipe corrosion due to air bleeding.

Flaws:

the body cannot withstand high pressure.

Price: 463 rub.

Oventrop1/2″

An automatic direct-type vent that allows you to bleed air from closed systems without human intervention. The outlet valve is located at the top. Used for heating and cooling with water coolant or other non-freezing liquids. Ensures uninterrupted operation at a fluid pressure of no more than 10 bar and a temperature of no more than 110 °C. The composition includes an automatic shutter that allows you to repair the drain without draining the liquid from the system. The body is made of high-strength brass. The diameter of the threaded connection is 1/2″.

Advantages:

reliable;
long service life;
eliminates humming in pipes;
protects system elements from corrosion by bleeding air.

Flaws:

high price.

Price: 1854 rub.

Read the article: Closed heating system: diagrams and features of installation of a closed type system

Review of the best manual

Air vents for manual heating systems are used to remove air from the top of pipes and radiators. Previously, conventional ball valves were used to bleed gases in batteries, through which, after removing the air lock, hot water could easily flow out. Subsequently they were replaced by valves with a shut-off device. Only air and a few splashes of coolant came out through them. Below is a rating of manual air vents.

Itap 194 1/8″

An Italian-made diverter removes gases from a closed-type heating system. The air vent body is made of durable chrome-plated brass. Equipped with a rotating drain handle made of acetate resin. Withstands the highest media temperature of 90˚C. Liquid pressure - 10 bar. The diameter of the threaded connection is 1/8″. Has quality certificates.Water and antifreeze substances, such as glycols, are used as coolants. The air is released by rotating the handle. The warranty on the diverter is 2 years.

Advantages:

eliminates air pockets that interfere with normal coolant circulation;
releases excess pressure to successfully connect the boiler;
protects pipes from corrosion caused by air pockets.

Flaws:

high price.

Price: 292 rub.

Emmeti 1/2″

An Italian-made manual vent bleeds air from heating systems and other closed circuits. This contributes to the successful operation of the heaters and proper circulation of the coolant. The diverter is mounted directly on the heating radiator and is used when the level of outgoing heat decreases. The reason for this is the resulting air pockets, which are manually released using an air vent.

Use a special key or screwdriver to remove the screw in the center of the device to bleed air from the radiator. The diameter of the threaded connection is 1/2″, suitable for any heating devices. Not repairable, because it is made in a cast form. When bleeding, it splashes a little to the side, so you need to be careful and cover the hole with a rag or container.

Advantages:

ease of use;
reliability;
contributes to the successful operation of heating systems.

Flaws:

short-lived o-ring.

Price: 120 rub.

Emmeti turnkey 3/8″

An Italian-made manual air vent is designed to bleed air in heating systems that use water or non-freezing materials as a coolant. In order to remove the plug from the pipes, you need to use a special wrench or screwdriver to unscrew the screw in the center of the outlet. Wait until all the air has left the system.The valve is attached directly to the radiator. Thread diameter is 3/8″. The highest temperature is up to 110 ˚С. Liquid pressure - 10 bar. The body is made of brass.

Advantages:

durable brass body, resistant to corrosion;
long period of operation - 30 years;
quickly removes air pockets.

Flaws:

Sometimes the plastic cover breaks.

Price: 333 rub.

Torido turnkey 3/4″

A manual type device is designed for bleeding air from heating systems, such as radiators and radiators with water or non-freezing coolant. To bleed the gas, use a wrench or a screwdriver to unscrew the nut in the center of the air vent until the air is completely released. Then they twist it again. Withstands system operating pressure of 10 bar and operating temperature up to 110 °C. Built directly into a radiator with a 3/4″ thread diameter. The body is made of high-strength brass.

Advantages:

ease of operation;
long service life;
quick air release.

Flaws:

high price.

Price: 370 rub.

Torido turnkey 1/2″

An Italian-made hand-held device is designed to remove air bubbles in heating systems with water or non-freezing coolant. The 1/2″ threaded connection diameter is suitable for many brands of heating devices. In order to bleed air, unscrew the nut in the center of the valve using a wrench or screwdriver. The operating temperature of the coolant is up to 110 ˚С. The air vent can withstand system pressure of no more than 10 bar. The body is made of high-strength brass.

Advantages:

durable body;
ease of operation;
reliability;
protects heating systems from corrosion by bleeding air;
eliminates humming in pipes.

Flaws:

you have to change the o-ring frequently.

Price: 261 rub.

Torido 1/2″

An Italian-made hand-held device designed to remove air bubbles from heating circuits filled with water or non-freezing coolant. To use the air vent, you do not need a special wrench or screwdriver.

If you notice a deterioration in the performance of the heating system, simply turn the handle of the device to bleed the air. The body is made of high-strength brass with a plastic handle. The diameter of the threaded connection is 1/2″ suitable for most heating devices. Withstands media temperatures up to 110 °C and liquid pressure up to 10 bar.

Advantages:

ease of operation;
eliminates humming in pipes;
quickly relieves gases;
protects the internal parts of pipes from corrosion.

Flaws:

Sometimes cracks appear on the handle due to exposure to high temperatures.

Price: 261 rub.

STI 10 3/8″

The device is designed for bleeding air in closed systems with water coolant or non-aggressive liquids. The body of the outlet is made entirely of high-strength brass that is not subject to corrosion. To bleed gases, do not use a special wrench or screwdriver. You just need to turn the handle of the device. Designed for operating coolant temperatures up to 110 ˚C and liquid pressure up to 10 bar. Thread diameter is 3/8″.

Advantages:

ease of operation;
reliability;
long service life;
quickly eliminates air pockets leading to pipe corrosion;
eliminates buzzing in pipes.

Flaws:

The brass handle of the air vent heats up at high coolant temperatures.

Price: 293 rub.

CTM TERMO3/4″(with lamb)

A Chinese-made device is designed to remove air from closed heating circuits. Made of high-strength brass with a plastic control knob. To bleed gases from pipes, you do not need a special wrench or screwdriver. It is enough to turn the knob until the air begins to escape. The connection diameter is 3/4″. Maintained operating temperature - up to 110 ˚С. The coolant pressure is 10 bar. Used in systems with non-freezing, non-aggressive liquids or water. Warranty - 3 years

Advantages:

comfortable handle;
durable brass body;
ease of operation;
quickly removes gases;
eliminates humming in pipes.

Flaws:

Cracks may appear on the handle due to the high temperature of the coolant.

Price: 350 rub.

Glavkhoztorg 1/2

A Russian-made manual device is designed to remove air from closed systems with a water filler or non-freezing liquids. In order to remove the air lock in the pipes, use a special wrench or screwdriver to turn the screw in the middle of the upper platform of the air vent until splashes appear. At the end of the procedure, tighten it again. The body is made of durable brass alloy with a plastic tip on top and a rubber seal on a 1/2″ thread. Suitable for most heating devices.

Advantages:

reliable;
O-ring included;
easy to use;
quickly removes air;
eliminates humming in pipes.

Flaws:

There is no thumb for unscrewing the screw.

Price: 142 rub.

Icma manual 1/2″

An Italian-made manual valve is designed for bleeding air in pipes of closed systems filled with water or non-freezing coolants.Protects circuit elements from corrosion due to accumulated air and protects against deterioration in heat transfer of heating systems. Withstands liquid pressure up to 10 bar, as well as temperatures up to 90˚C.

The body is made of brass with a plastic nozzle and an O-ring. To bleed air, use a special key or screwdriver to turn the screw in the center of the upper platform of the air vent. The 1/2″ diameter thread is suitable for use in most heating appliances.

Advantages:

reliability;
O-ring included;
ease of operation;
quickly eliminates air pockets and humming in pipes.

Flaws:

operating temperature is not high enough.

Price: 215 rub.

CTM TERMO 1/2″

Chinese-made mounting kit for radiators with water coolant or filled with non-freezing liquids that are not aggressive to the materials of the drain. Used to eliminate air locks in heating systems. Includes an o-ring.

To bleed air, turn the thumb knob on the body of the device, which eliminates the need for special keys or screwdrivers. The diameter of the threaded connection is 1/2″ allowing the valve to be used for most household appliances. Withstands liquid pressure of 10 bar and operating temperature up to 110 °C.

Advantages:

ease of operation;
comfortable handle;
O-ring included;
quickly removes air from pipes, eliminating humming;
prevents corrosion.

Flaws:

overcharge.

Price: 277 rub.

Icma, 3/4″

An Italian-made manual air vent is designed to bleed air from closed heating systems. The body of the device is made of brass with a plastic nozzle and a sealing gasket.To use, unscrew the screw in the center of the upper plane of the device using a wrench or screwdriver. The diverter easily screws onto radiators with a 1/2″ thread. The operating pressure of the coolant is 10 bar, the temperature is up to 90 ˚С.

Advantages:

ease of installation and management;
reliability;
O-ring included;
quickly eliminates air locks.

Flaws:

there is no handle to control the propeller.

Price: 240 rub.

As the review shows, the best air vents are produced at enterprises in Italy and Russia. Although there are quite good models made in China, both automatic and manual. The use of these valves will eliminate many problems in heating pipes and radiators, such as humming or reduced heat transfer.