VIBRATION ABSORBERS SERIES 7690

Product catalog summary

Overview: The Vibration Absorbers Series 7690 are designed for use in commercial refrigeration systems and civil and industrial air conditioning plants. Their primary function is to prevent the transmission of compressor vibrations to the refrigerating system pipes, thereby reducing the risk of damage and noise levels. They also accommodate minor thermal expansions of the piping.

Specifications: The absorbers are classified as 'Pressure vessels' under Directive 97/23/EC and are suitable for refrigerant fluids in Group 2 according to Directive 98/23/EC. They are available in various sizes with different connection diameters and lengths, and they can withstand varying working pressures depending on the temperature.

Construction Materials: The absorbers are constructed using TIG welding for enhanced resistance to overheating during brazing. Key materials include copper tubes (EN 12735-1 – Cu-DHP), and various grades of stainless steel (EN 10088-1, EN 10028-7, EN 10088-3) for fittings, corrugated flexible parts, net holders, and wire braids.

Installation Guidelines: Vibration absorbers should be installed as close as possible to the compressor on both suction and discharge lines. They must be positioned perpendicularly to the direction of vibrations. For vibrations on two planes, two absorbers should be used. They can be installed vertically to prevent water retention and are not designed to absorb axial or torsion stress. A gap of 2% of the total length should be maintained to allow for thermal expansion.

Recommendations: If high-speed refrigerant fluid causes vibration and noise, a larger size absorber is recommended. The connection to the piping is typically done through brazing, and the design allows for welding without special overheating protections.

Catalog excerpts

VIBRATION ABSORBERS SERIES 7690 APPLICATIONS CONSTRUCTION MATERIALS The vibration absorbers are designed for installation on commercial refrigerating systems and on civil and industrial air conditioning plants. The function of this item is to avoid the transmission of compressor’s vibrations to the refrigerating system pipes, reducing the risk of damage and the noise level. The vibration absorbers can also compensate small thermal expansion of the piping. The vibration absorbers are classified “Pressure vessels” according Article 1, Section 2.1.4 of the Directive 97/23/EC and are subject to Article...

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