Electropolished Ball Valves

Stainless Steel Investment Castings are sand blasted to remove grinding / filing marks and other irregularities. This leads to blackening of the castings. Usually these castings are assembled as it is, so the sandblasting is not removed making the ball valve look darkened. Some customers complain that the valves do not APPEAR like stainless steel. To solve this problem the valves are electropolised to give them a shiny look so that they appear like stainless steel.