Abstract: A collection unit for collecting resources located at, in or adjacent to a sea floor. The collection unit includes a unit frame, at least one collection tool, and a suspension connector which is arranged on the unit frame. The suspension connector suspends the collection unit via a suspension line. The unit frame has a longitudinal axis which is substantially parallel to the sea floor during an operation of the collection unit. The suspension connector is arranged to be movable on the unit frame in a direction of the longitudinal axis.

Abstract: A pump includes a plurality of pump cylinders, an intake line, and a discharge line. Each pump cylinder of the plurality of pump cylinders has a piston arranged therein. Each piston divides an interior volume of a respective pump cylinder into a first working chamber and a second working chamber. Each first working chamber is operatively connected to the intake line and to the discharge line of a fluid to be pumped. Each second working chamber is fluidly connected to the first working chamber of another pump cylinder of the plurality of pump cylinders.

Abstract: A pump for pumping a pumping mud or a slurry. The pump includes a housing having a pump chamber and an intermediate fluid chamber, a membrane arranged within the housing, a reciprocal pumping member operatively arranged in the intermediate fluid chamber, and an accumulator fluidly connected to the intermediate fluid chamber via a throttle. The pump chamber has a fluid inlet and a fluid outlet. The membrane delimits the pump chamber from the intermediate fluid chamber.

Abstract: A pulsation damping system for reducing pressure oscillations in an inlet line and/or in an outlet line of a piston pump. The piston pump includes a pump chamber which is connected to the inlet line of the piston pump via a first fluid connection and to the outlet line of the piston pump via a second fluid connection to convey a conveyance fluid. The pulsating damping system includes a damping device. The pump chamber includes a damping fluid connection via which the pump chamber is fluidically connected to the damping device to damp the pressure oscillations.

Abstract: A pump for pumping a pumping mud or a slurry. The pump includes a housing having a pump chamber and an intermediate fluid chamber, a membrane arranged within the housing, a reciprocal pumping member operatively arranged in the intermediate fluid chamber, and an accumulator fluidly connected to the intermediate fluid chamber via a throttle. The pump chamber has a fluid inlet and a fluid outlet. The membrane delimits the pump chamber from the intermediate fluid chamber.

Abstract: A pulsation damping system for reducing pressure oscillations in an inlet line and/or in an outlet line of a piston pump. The piston pump includes a pump chamber which is connected to the inlet line of the piston pump via a first fluid connection and to the outlet line of the piston pump via a second fluid connection to convey a conveyance fluid. The pulsating damping system includes a damping device. The pump chamber includes a damping fluid connection via which the pump chamber is fluidically connected to the damping device to damp the pressure oscillations.