The article deals with the evaluation of the functional surfaces of the ball valve body. It deals with the finishing methods when machining parts of the ball valve assembly. Above all, it is good practice to achieve a reduced roughness of the machined seating surfaces and areas where a special sealing element will be used. From the offered variants of surface finish machining methods, emphasis is placed on turning technology, so called fine turning. Experimental machining is aimed to achieve the required surface roughness (parameter Ra less than 0.2μm) directly after the finishing operation.Keywords: ball valves, roughness, finishing methods, surface finish, machining, cermet
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.