Agitator assembly

An agitator assembly comprising:

• an agitator body configured to be attached to a wall of a vessel or a tank;
• and
• a shaft having an axial direction, the shaft being rotatably assembled to the agitator body and extending through a lead-through in the agitator body into the vessel or the tank, when assembled for use, and further including a sealing configured to seal the rotatable shaft, and
• an axially movable blocking part arranged at the agitator body and including a shaft opening through which the shaft is arranged to extend, a mating surface configured to mate with the shaft which, when brought together by axial movement of the blocking part, provides a seal between the blocking part and the shaft, and the mating surface arranged at an axial distance from the sealing in the lead-through, and with the agitator body which, when brought together by the axial movement of the blocking part, provides a seal between the blocking part and the shaft and between the blocking part and the agitator body, and that the blocking part provides a closed space around the lead-through in the agitator body.