Valtec automatic air vent: principle of operation and installation

The discharge of air from the heating and water mains is very important. The accumulation of it leads to corrosion and the formation of air plugs. Reliable assistance in such a situation is capable of providing automatic air vent, the choice of which should be approached with the utmost seriousness.

Valtec supplies superior automated devices, including small-sized radiator systems. Components for them are the shut-off valves of the 539th model, which allow you to remove the air vent without removing all the liquid from the system.

Cases of mechanisms can be made from:

• brass;

• of stainless steel;

• special grades of plastics.

Other criteria imply the following gradation:

• device without blocking;

• radiator system;

• corner;

• float;

• horizontal.

VT 502 1/2 refers to the float format, is equipped with a spool based on a spring. The device can be used on highways pumping water, ethylene glycol, propylene glycol and other liquids that do not destroy structural materials. Experts note that such a system can be easily repaired. For the manufacture of body applied brass plumbing category, which is coated with a layer of nickel. The sealing gasket is made of elastomer, the polypropylene float is also quite chemically inert.

Spring developers prefer to use stainless steel Aisi 306, and nylon holders securely fix the jet and spool. Carefully selected materials and thoughtful design help the air vent to work with water heated to 110 degrees and under pressure up to 10 bar. The diameter of the device is 4.6 cm. The connection envelope of the external thread is ½.

Even in a completely sealed heating or plumbing circuit that is continuously filled with liquid, air may appear. The reason for its occurrence - the process of water injection or leakage of connections. To prevent the mixing of water with air almost never succeeds, and the compounds tend to be broken suddenly. Worst of all, the visual and easily detectable signs of users may not be. And this happens even in perfectly tuned systems assembled from quality components.

Problems are significantly exacerbated if the heating system is mounted poorlyif a solid fuel boiler is connected, if defective elements are installed on the main line. But the air vent is obliged to cope not only with air, but also with other gases. They invariably appear as a result of a chemical reaction between a heat carrier with high acidity and aluminum of radiators. There are other reactions, accompanied by more or less abundant gas formation. When the body is filled with gaseous substances, the float goes down and unlocks the valve, the flow of water displaces the gas and the float returns to its original position.

You can find out how the automatic air vent in the heating system works in the video.