Discharge valve with a detachable inner lining

A discharge valve comprising a valve housing connectable to a process element having a pressurized interior process volume, said discharge valve comprising a flow channel having a longitudinal center axis and a valve member in working cooperation with said flow channel, said flow channel being arranged to be in fluid communication with said pressurized interior process volume of said process element after connection thereto, said valve member comprising an insertion part being insertable in said flow channel by displacement of said valve member in a displacement direction at an angle (α) to said longitudinal center axis and being a detachable inner lining at least partly forming said flow channel and having an envelope wall, wherein said detachable inner lining comprises an aperture extending through said envelope wall and through which said valve member is adapted to run when being displaced in said displacement direction, said detachable inner lining having a symmetrical form whereby said detachable inner lining is detachable from said valve housing, and insertable again after being turned 180°.