Closed expansion tanks are used to meet the volumetric change of the heated water in central heating and heating systems, to regulate the static pressure created by the pump on the installation, and to compensate for the changes in the flow of water. Expansion tanks, which are suitable for the system and selected correctly, prevent sudden pressure changes in the system and prolong the service life of the pump and installation elements. Thanks to the hygienic membrane used in its production, expansion vessels are safely preferred in both heating and sanitary applications. Membranes and expansion tanks are designed to be compatible with each other. The water is inside the membrane but in no way comes into contact with the tank. For this reason, tanks are used both in heating and cooling systems and in sanitary installations.

With the spread of natural gas in our country, mThe use of embryonic tanks has also started to increase. Today there is one membrane tank in all boiler rooms.

Pressure vessels and expansion tanks are explained in the annex (Annex 3) of the Regulation on Health and Safety Conditions in the Use of Work Equipment, titled matters related to maintenance, repair and periodic controls. In the hydrostatic tests to be carried out in the regular inspection and control of pressure vessels and expansion tanks, 1,5 times the operating pressure is applied, unless there is a contrary criterion in the standards. In addition, these controls should be carried out at least once a year by mechanical engineers, machine technicians or high technicians.

Periodic controls of expansion tanks are based on the above mentioned regulation as well as the pressure equipment regulation, the portable pressure equipment regulation and the simple pressure vessel regulation.

Our company carries out regular inspections and inspections of pressure vessels and expansion tanks within the scope of regular controls of pressure vessels in accordance with the relevant legal regulations and standards published by domestic and foreign organizations. A few standards considered in these studies are:

• TS 1203 EN 286-1 Tanks - Simple - Non-flammable - Pressurized - Designed to store air or nitrogen - Part 1: Pressure tanks for general purposes
• TS EN 1012-1 Compressors and vacuum pumps - Safety rules - Part 1: Air compressors
• TS EN 13445-5 Pressure receptacles - Non-contact - Section 5: Inspection and testing