#controlvalves #Fisher #positioner #Leaktest #calibration
Fisher control passing test. this is a final process after overhauling and calibration of a positioner before put it back to service always make sure the allowable passing as per the valve data sheet, There are several classes of leak depend on the application. tight shut off valve should have any passing. it should zero leak.. know your process and final control elements parameters so there will be no any error or thing goes wrong online.
all the best to all Instrument and control Professionala in automation Industry!
have a brighter and safe future ahead!
