TPi November 2015

Fi t t ings , f langes , valves & connectors

Tube connection system for extreme conditions

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, ie under static stress tests the bursting pressure has to be at least four times higher than the stated pressure value.

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 are suitable for all common metric outer tube diameters from 6 to 42mm. Flare fittings allow leak-free and pullout- 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

Section view of a flare fitting

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 that is claimed to set new standards in the area of corrosion protection. Areas of application include press engineering, ship building/ offshore and mobile hydraulics. Walter Stauffenberg GmbH & Co KG – Germany www.stauff.com

The elastomer seals on the contact points of the 37° flare fitting permanently

Exploded view of a flare fitting: (from left) threaded fitting, flare fitting with O-rings, tube with 37° flare, pressure sleeve and coupling nut

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November 2015 Tube Products International