VALVES


kind of valves (flat seats). Thanks to its small size and its machining capacities, the TU200 can machine all the valve’s seal bearings. For conical seats, a TU400 with axial and radial feed combination device is the best option.


•Check valves : Machining of the seal surface. The axis’s bores of the check valves have to be machined


with greater precision because the rotation axis will be adjusted


• Butterfly valves : The Refinery industry, for installing pipeline, is using small butterfly valves (Ø<800 mm). To face those small valves, we need the TU series machines or the XP600. In order to machine all the


flanges, we use the chain clamping


device to fix the machine on the outside.


• Safety valves: Sometimes, conical machining is required and we can perform it with the RTJ device that will combine the axial and radial feeds. On a flat seat we need a roughness of Ra 0.8


The SERCO machines can be assimilated to portable lathes, but the tool bit in rotation and the machine’s body is fixed to the part to be machined. A lot of different revolution machining are performed by SERCO machine tools, not only seal surfaces (boring, drilling, spot faces, etc...)


Why use SERCO machines? The SERCO machines represent the best balance between lightness, small size, rigidity and accuracy. Indeed, their dimensions and their weight will make you save a precious time for the set up of the machine. These machines are the result of more than 30 years of technical experience, knowledge and customers understanding all over


22 IMT March 2015 www.internationalmetaltube.com


the world. But the main Serco’s strength is


to design machines perfectly suited for onsite works (light weight, high precision, easy to use). In order to set up a machine on


a flange, we have to adjust the concentricity and flatness. SERCO is the only manufacturer in the world to supply a machine with these two adjustments totally independent. Thereby, once the flatness is done


and locked, we can work on the concentricity without upsetting the flatness. The adjustments are made only by moving screws and nuts that mean you can adjust in any position and no matter the (light) weight of the machines. This independent adjustment system allows to save a lot of time and to reach the best accuracy possible.


Serco supports your industrial projects worldwide Other applications:


Nuclear power plants, thermal power plants, Wind power industry, hydroelectric power plants …


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