One embodiment provides an apparatus, including: a pipe inspection robot that traverses a pipe; a fetter comprising a water pump; and an intake hose that couples the pump of the jetter to a local water source proximate to the pipe inspection robot. Other aspects are described and claimed.

One embodiment provides an apparatus, including: a pipe inspection robot that traverses a pipe; a fetter comprising a water pump; and an intake hose that couples the pump of the jetter to a local water source proximate to the pipe inspection robot. Other aspects are described and claimed.

A fluid spraying facility including a fluid circulation pipe and a scraper that can circulate in the pipe in order to push back the fluid present in the pipe as it moves forward, the pipe and the scraper each having a circular section, the pipe having an inner diameter, the scraper having an outer diameter, the outer diameter having a first value. A difference between the inner diameter of the pipe and the first outer diameter value of the scraper is greater than or equal to 100 micrometers, preferably greater than or equal to 200 micrometers.

A fluid spraying facility including a fluid circulation pipe and a scraper that can circulate in the pipe in order to push back the fluid present in the pipe as it moves forward, the pipe and the scraper each having a circular section, the pipe having an inner diameter, the scraper having an outer diameter, the outer diameter having a first value. A difference between the inner diameter of the pipe and the first outer diameter value of the scraper is greater than or equal to 100 micrometers, preferably greater than or equal to 200 micrometers.

A pressure medium-operated pipe cleaning device for streak-free cleaning of the pipe and duct wall and simultaneously a video recording of the entire cleaning process. The device includes a nozzle module and a camera module. The nozzle module includes a plurality of thrusters and a plurality of cleaning nozzles, and the camera module has at least one camera, an illuminating device, control electronics, a memory, a transmitter and an accumulator, so that the camera module can be controlled from outside by the control electronics. The nozzle module and camera module separately designed in terms of location and construction, and mounted on a carriage spaced linearly apart from each other in the direction of a longitudinal axis by a distance, wherein a stator part has the thrusters of the nozzle module and the camera module is rotationally and linearly immovably fastened to the carriage, while the rotor part on which the plurality of cleaning nozzles are arranged can be rotated around the longitudinal axis.

A method for cleaning the interior of pipes using a cleaning device and a cleaning device. The cleaning device has a tube and an advancing unit for moving the tube along a main axis (H) of the advancing unit. The advancing unit has a drive which is frictionally connected to the tube and by which the tube is moved in an axial direction along the main axis (H). The advancing unit is set into a rotational movement about the main axis (H) during the axial movement of the tube, and the drive transmits the rotational movement to the tube.

A method for cleaning the interior of pipes using a cleaning device and a cleaning device. The cleaning device has a tube and an advancing unit for moving the tube along a main axis (H) of the advancing unit. The advancing unit has a drive which is frictionally connected to the tube and by which the tube is moved in an axial direction along the main axis (H). The advancing unit is set into a rotational movement about the main axis (H) during the axial movement of the tube, and the drive transmits the rotational movement to the tube.

A drainage cleaning system is provided for a tunnel system, where the drainage cleaning system includes a drainage pipe, where the drainage cleaning system includes a charging station on the drainage pipe, and where the charging station is operable to charge the battery of a self-propelled cleaning robot located in the drainage pipe and to allow measuring data recorded by the cleaning robot to be sent to a server arranged outside of the drainage cleaning system.

A drainage cleaning system is provided for a tunnel system, where the drainage cleaning system includes a drainage pipe, where the drainage cleaning system includes a charging station on the drainage pipe, and where the charging station is operable to charge the battery of a self-propelled cleaning robot located in the drainage pipe and to allow measuring data recorded by the cleaning robot to be sent to a server arranged outside of the drainage cleaning system.

A nozzle assembly comprises a hollow nozzle body having a central bore and a plurality of ports extending through the body from the central bore; and a switching valve cartridge disposed in the central bore that directs fluid flow to ports upon application of fluid flow above a predetermined threshold to the inlet and direct fluid flow to different ports upon fluid flow having subsequently dropped below the predetermined threshold and then exceeding the predetermined threshold. The cartridge comprises a cylindrical cartridge case having a front portion and a cup shaped rear portion, a cylindrical poppet slidably disposed within the cup shaped rear portion of the cartridge case, and a biasing member within the cartridge case between the front portion of the case and the poppet urging the poppet away from the front portion of the cartridge case.