Dispenser head for keg fitments with housing, guide bush and slide piece

摘要

The slide piece (4) moves between a closed and open position and has a fluid-outlet (6). The fluid outlet and a pressurised gas inlet on the housing (1) are connected to corresponding openings in the keg fitment when the slide piece is open. The guide bush (5) has a pressure release hole (8) on the track along which the slide piece moves. A third sealing ring (43) above the first and second sealing ring (41,42) seals the pressure release hole against the atmosphere in the slide piece's open position. The second sealing ring seals the pressurised gas inlet (2) towards the pressure release hole in the slide piece's closed position. The third sealing ring is positioned in grooves in the slide piece, running on sloping planes in relation to the axis of the slide piece's movement.