Reliable tube connection system for extreme conditions

(Werdohl, July 2015)

Reliable tube connection system for extreme conditions

STAUFF Connect flare fittings

The multi-part steel flare fittings are part of the STAUFF Connect range which was developed for the detachable connection of tubes. They consist of fitting bodies, cone adapters with O-rings, support sleeves and union nuts and they are suitable for all common metric outer tube diameters from 6 to 42 mm. 

Flare fittings allow leak-free and pull-out proof connection of tubes with a 37° flare in line with DIN 3949, with the threaded fittings with 24° cone in line with ISO 8434-1. They are primarily used in hydraulic systems where previously complicated welding connections had to be used for safety reasons.

Suitability for a permitted rated pressure up to 500 bar (in the Light Series) and up to 630 bar (in the Heavy Series) allows application even under extreme conditions. 

As with all connectors from the STAUFF Connect range, all components are designed for the rated pressure with a quadruple safety factor, i.e. under static stress tests the bursting pressure has to be at least 4 times higher than the stated pressure value.

The elastomer seals on the contact points of the 37° flare fitting permanently increase the sealing effect even under vibrations and pressure fluctuations. The useful life of the components is increased by a high-quality zinc nickel coating which sets new standards in the area of corrosion protection. Areas of application are e.g. press engineering, ship building/offshore and mobile hydraulics.

Image 1:

Section view of a flare fitting. (Courtesy of Walter Stauffenberg GmbH & Co. KG)

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Image 2:

Exploded view of a flare fitting: threaded fitting, flare fitting with O-rings, tube with 37° flare, pressure sleeve and coupling nut (from left to right). (Courtesy of Walter Stauffenberg GmbH & Co. KG)

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Background Information

Walter Stauffenberg GmbH & Co. KG was founded in the 1950s in Werdohl, in the German province of North Rhine-Westphalia, and was initially a contract turning shop. Today the company operates under the trade name STAUFF, developing, producing and marketing fluid technology components for use in plant construction and mechanical engineering. In the fields of tube, pipe and hose clamps, measuring technology and hydraulic filtration, STAUFF is one of the world’s leading organisations in a growing industrial segment.

Meanwhile, more than 1100 employees (12/2014) in 18 companies generate an annual turnover of more than EUR 200 million (2014) worldwide. Additional subsidiaries have recently been opened in Malaysia, Vietnam and Thailand. Besides the group headquarters located in Werdohl-Ehrenfeld, the company has production and logistics facilities in the German cities of Plettenberg-Ohle and Neuenrade-Küntrop.

Press Contact

Mr Boris Mette
Head of Marketing Communications
Tel.: +49 (0) 2392 / 916-154
Fax: +49 (0) 2392 / 916-270154

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