The invention relates to a method for rinsing a coating product application device comprising a metering device and a coating product applicator. The metering device comprises a metering pump having an inlet connected to a gas supply channel and a solvent supply channel and an outlet connected to the applicator. Each of the supply channels is provided with a respective valve.

The method comprises at least one step of suction by the metering pump of a volume during at least one suction phase of the metering pump, the valves being alternately in the open configuration during the at least one suction phase, in such a way that the volume sucked in during the at least one suction phase comprises alternately gas and solvent.

The invention further relates to an associated application device.

Disclosed is an apparatus for conveniently and rapidly removing chips from the interior of a pipe by discharging chips with a portion of fluid out of the pipe using the difference between the pressure in the pipe and atmospheric pressure. The apparatus includes a fitting mounted to a region adjacent to a hole bored in a pipe, a sandwich valve coupled to the fitting, a chip-removing adapter mounted above the sandwich valve, a suction tube extending to an inner surface of the pipe through the chip-removing adapter in order to remove chips from the pipe, a vertical moving unit for vertically moving the suction tube, a delivery tube connected to an upper end of the suction tube and configured to deliver the chips to a predetermined place, and a strainer mounted to a distal end of the delivery tube in order to separate the delivered chips from the fluid.

Disclosed is an apparatus for conveniently and rapidly removing chips from the interior of a pipe by discharging chips with a portion of fluid out of the pipe using the difference between the pressure in the pipe and atmospheric pressure. The apparatus includes a fitting mounted to a region adjacent to a hole bored in a pipe, a sandwich valve coupled to the fitting, a chip-removing adapter mounted above the sandwich valve, a suction tube extending to an inner surface of the pipe through the chip-removing adapter in order to remove chips from the pipe, a vertical moving unit for vertically moving the suction tube, a delivery tube connected to an upper end of the suction tube and configured to deliver the chips to a predetermined place, and a strainer mounted to a distal end of the delivery tube in order to separate the delivered chips from the fluid.

A device for cleaning a medical vacuum pump, wherein the medical vacuum pump has a suction connector and an air removal opening, which are connected to each other in a fluid-tight manner. The device has a rinsing agent delivery line, connectable to at least one rinsing agent container and having a first port for connection to the suction connector, and a suction line having a second port for connection to the air removal opening and having a vacuum port for connection to a suction source. A rinsing agent can be sucked from the rinsing agent container through the delivery line and via the first port into the medical vacuum pump and from there via the second port through the suction line into an outflow. This device permits simple and rapid cleaning of a vacuum path of medical vacuum pumps.

A device for cleaning a medical vacuum pump, wherein the medical vacuum pump has a suction connector and an air removal opening, which are connected to each other in a fluid-tight manner. The device has a rinsing agent delivery line, connectable to at least one rinsing agent container and having a first port for connection to the suction connector, and a suction line having a second port for connection to the air removal opening and having a vacuum port for connection to a suction source. A rinsing agent can be sucked from the rinsing agent container through the delivery line and via the first port into the medical vacuum pump and from there via the second port through the suction line into an outflow. This device permits simple and rapid cleaning of a vacuum path of medical vacuum pumps.

A vacuum truck for dispensing water into a sewer or similar location and receiving recovered water from the sewer that includes debris to be removed therefrom. The vacuum truck includes a debris tank that receives the recovered water and retains debris removed from the recovered water. A primary and a secondary filter are positioned in the debris tank for separating debris from the recovered water. A water pump draws the recovered water through the secondary filter and provides the water to a tertiary filter that removes smaller debris from the recovered water. The recovered water from the tertiary filter is provided directly to a jetting water pump without being accumulated in a water holding tank. The vacuum truck includes a water storage tank that includes potable water for cleaning the truck or when recovered water is not available from the debris tank.

A vacuum truck for dispensing water into a sewer or similar location and receiving recovered water from the sewer that includes debris to be removed therefrom. The vacuum truck includes a debris tank that receives the recovered water and retains debris removed from the recovered water. A primary and a secondary filter are positioned in the debris tank for separating debris from the recovered water. A water pump draws the recovered water through the secondary filter and provides the water to a tertiary filter that removes smaller debris from the recovered water. The recovered water from the tertiary filter is provided directly to a jetting water pump without being accumulated in a water holding tank. The vacuum truck includes a water storage tank that includes potable water for cleaning the truck or when recovered water is not available from the debris tank.

To clean a nozzle that is part of an automated analyzer and is provided with both a tubular discharge unit that discharges a cleaning liquid and a tubular suction unit that suctions in cleaning liquid that was discharged from the discharge unit and is running down an outer surface, first the discharge unit is made to start discharging, and then in parallel with said discharging, the suction unit is made to start suctioning. After the suction unit has suctioned in the cleaning liquid running down the aforementioned outer surface for a prescribed length of time, the suctioning is temporarily stopped. Next, after a prescribed amount of the cleaning liquid has accumulated in a cleaning tank, the discharging is stopped, and with the suction unit immersed in the cleaning liquid accumulated in the cleaning tank, the suctioning is restarted.

To clean a nozzle that is part of an automated analyzer and is provided with both a tubular discharge unit that discharges a cleaning liquid and a tubular suction unit that suctions in cleaning liquid that was discharged from the discharge unit and is running down an outer surface, first the discharge unit is made to start discharging, and then in parallel with said discharging, the suction unit is made to start suctioning. After the suction unit has suctioned in the cleaning liquid running down the aforementioned outer surface for a prescribed length of time, the suctioning is temporarily stopped. Next, after a prescribed amount of the cleaning liquid has accumulated in a cleaning tank, the discharging is stopped, and with the suction unit immersed in the cleaning liquid accumulated in the cleaning tank, the suctioning is restarted.

Methods and apparatus to clean and dry cavities are disclosed. A disclosed example tool apparatus includes an inner tube to provide a fluid to the cavity when the tool apparatus is positioned relative to the cavity, and an annular tube surrounding the inner tube, where the annular tube is fluidly coupled to a suction chamber and where the suction chamber is fluidly coupled to a vacuum vessel. The example tool apparatus also includes a valve disposed between the suction chamber and the vacuum vessel.