TPi July 2017

products & developments

15 years of tube coupling with no known leaks At the end of 2016, VossFormSQR, the tube coupling system from Voss Fluid, celebrated its 15 th market anniversary without a single known system leak. The system forms a 24° contour on a commercially available hydraulic tube to ensure a high quality connection. High pressure peaks or vibrations are a particular challenge for classical hydraulic connections with cutting rings. The VossFormSQR tube coupling system has proven itself over 15 years in

VossFormSQR ensures process reliability and leak protection

of applications. “In recent years, we have seen that tube coupling systems are used more and more frequently in stationary applications, as well,” said Marco Schawohl, marketing director at Voss Fluid. “There is clearly a trend toward this solution.” A majority of all leaks and seal failures in hydraulic couplings occur due to faulty handling. With VossFormSQR, users significantly reduce this risk. The integrated stop plate is a special feature of VossForm 100. For tube forming, the fitter pushes the tube to be formed up to the stop in the machine. Pushing the start button triggers the process, and this rules out errors. The system also supports the fitter during assembly of the SQR-function nut. When the nut is tightened, a noticeable increase in force indicates the end of the assembly process. In 2015, Voss Fluid introduced the VossForm 100 Compact, a space- saving tabletop device for small runs. Voss Fluid GmbH – Germany www.voss-fluid.de

mobile work machines, shipbuilding and in the mining industry. Its installation- friendly design and specialised structure ensure a secure and permanently leak- proof coupling, even under extreme conditions. VossFormSQR consists of three components: a standard nut with moulded seal made of FKM/FPM; a standard connector; and a cold-formed 24° tube contour at the end of the hydraulic tube that is to be connected. Since the system has been on the market, Voss Fluid has sold several million SQR-function nuts and has had no complaints due to functional failure. The fitter fabricates the tube contour with the VossForm 100 forming machine. This is supplemented by a soft seal and the special SQR-function nuts with integrated clamping ring that radially clamps the tube on the circumference, relieving the transition between the formed contour and the tube. This increases the tolerance with respect to dynamic loads. With the metallic seal and the additional soft seal, VossFormSQR provides double protection against leaks, making the system attractive for a wide range

The VossForm 100 forming machine easily forms the required tube contour Vacuum priming air valves

valve can also be equipped with an optional water level control switch to signal when the water lever has reached the pump or provide a warning that the pump has lost its prime (wet well is empty or suction line is blocked). Val-Matic Valve & Mfg Corp – USA valves@valmatic.com www.valmatic.com

fills with water. When the water reaches the priming valve, the float rises and closes the priming valve to prevent fluid from flowing to the vacuum priming system. The priming valve will continue to release air while the pump is running. The Vacuum Priming Valve features stainless steel trim and float to provide years of trouble-free operation. The

Val-Matic’s Vacuum Priming Valve is used in conjunction with a central vacuum priming system to prime a centrifugal pump, and is typically mounted on the suction piping or pump volute. The purpose of the valve is to automatically allow air to be drawn out of the pumping system until the pump

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TUBE PRODUCTS INTERNATIONAL July 2017

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