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VDI 4708 Blatt 1 Pressure maintenance, venting, deaeration - Pressure maintenance

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German title
Druckhaltung, Entlüftung, Entgasung - Druckhaltung
Publication date
Engl. VDI-Gesellschaft Bauen und Gebäudetechnik
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Number of pages
Available in
German, English

This guideline applies to the media circulation in heating systems where the interruption of operation or of forced circulation is a regular occurrence (e.g. interruption of heating in summer) during operation. It describes the dimensioning of pressure-maintenance systems and the testing of such systems during operation and maintenance. Pressure relief and safety equipment are not the subject of this guideline. The guideline supplements existing guidelines for the design, manufacture and testing of the pressure-maintenance, deaeration and degassing systems or their system components with respect to thermo-hydraulic integration into the fluid circulation in terms of recommendations and dimensioning guidelines.

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