TPT September 2019

T E CHNOLOG Y

Hydraulic connection system for tight assembly spaces

To ensure this simplicity, Voss Plug was designed so that all components sit captive on the plug. The system comprises two wedge slider elements, a retaining element and a sealing element. Between the connecting stud (made of machining steel with zinc- nickel coating) and the wedge gate valve, a special snap ring is placed as a fastening element along with an O-ring and a support ring as a “sealing package”. With the patented wedge slider locking system, Voss Plug achieves plug-in reliability even with a high-pressure load capacity of up to 450 bars. The special snap ring automatically adopts its holding position due to the active locking mechanism, which is clearly visible from the outside. In this position the fastening ring is completely chambered (360°). Absolute safety is also ensured when the system is released: if the fitter accidentally unlocks the Voss Plug system even though the hose is under pressure, at first nothing happens. Only when the fitter moves the plug approximately 3mm against the pressure direction can the retaining ring take up its opening position and the plug system be released. The system can be unlocked very easily, for example using a screwdriver. While classic threaded

IN hydraulic connection technology, threaded solutions for safe, reliable and leakage-free installation have stood the test of time. However, there are situations in which they reveal weaknesses, when compromises have to be made in the design or when it comes to ease of installation – for example in cramped installation spaces. Engineers at Voss Fluid have developed a plug-in system that could replace the usual threaded solutions for hydraulic lines. Voss Fluid’s aim with Voss Plug was to develop a solution that ensures a reliable and fast installation, but also exhibits advantages in difficult assembly situations. This required a system that could be installed stress-free and could be mounted in such a manner that directional deviations during installation were prevented. The underlying principle of the system is simple. Voss Plug can be mounted and dismounted from above to save space. The installation takes only about five seconds – around 30 seconds less than the installation of an average taper coupling that has to be screwed togeth- er. While classic threaded fittings require a large radial mounting space to attach an open-end wrench, Voss Plug allows a high degree of installation flexibility.

fittings tend to rotate during installation and can cause stresses in the hoses as well as directional deviations, Voss Plug adapts to the ideal, tension-free course of the hose line. Voss Plug is available in two versions: as an integrated plug-in version and as a plug-in version with adapter connection piece. With the integrated variant, the customer is provided with appropriately shaped holes in the connection area of the system. With this solution, the adapter socket can be completely omitted and no further components have to be mounted on the customer’s plant end. Voss Fluid has developed a connection system that can replace the usual threaded solutions for hydraulic lines

Voss Fluid GmbH – Germany Email: info@voss-fluid.net Website: www.voss-fluid.net

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SEPTEMBER 2019