There is provided an automatic analyzer that stops a back-flowing waste fluid from reaching a cleaning tank when bubbles are produced in a waste fluid pipe. An automatic analyzer includes: a cleaning tank in which cleaning using a detergent is performed with analysis operation of a specimen; and a waste fluid pipe through which a waste fluid flowing from the cleaning tank is discharged. The waste fluid pipe has an upward pipe branched upward. At a tip end of the upward pipe, opening is provided. The opening is disposed blow from the cleaning tank.

A method and system for removing debris from drainage lines in high rise building uses a high pressure water line terminated by a head having one or more backwards-facing nozzles. The thrust force creates at the backward-facing nozzle(s) is sufficient to propel the head and water line vertically up a drainage line. An operates can control the head and, with the assistance of a video system used with the head, maneuver the head along the line, into single stack aerator fittings, and into and along horizontal lines connected to the single stack aerator fittings. The force of the water exiting the nozzle(s) on the head both dislodges debris in the drainage line and fittings, and urges it downstream back to the access point where the head was inserted into the drainage line.

A method for the prevention or remediation of flooding waters in a geographic area using one or more thrusters to increase the velocity of a portion of the water in a channel draining the flooding waters away from the geographic area, mixing the portion of the accelerated waters back in to the remainder of the waters in the channel thereby increasing the average velocity of the waters in the drainage system and increasing the rate of removal of the flooding waters from the geographic area, the thrusters having the one or more inlets approximately at ninety degrees from the centerline of the thruster and cleaning the thruster inlets by reversing the flow through the thruster while the flooding waters are still passing the thruster.

The methods for cleaning pipes with service connections includes vacuuming therethrough abrasive projectiles first in one direction, and thereafter, in an opposing direction, with additional cleaning achieved by opening of service connection valves during vacuuming. By opening service connection valves during vacuuming, debris and moisture are removed from within the service connections. Vacuuming direction reversal removes shadow deposit areas.

This application relates to a device called the Tap Blaster (FIG. 1) used to create a back flow in a draft beer system apparatus more particularly the faucet causing system pressure and product to be harnessed to clean openings (FIG. 7 and FIG. 9) such as air vents, mechanical channels and apparatus internal parts and side walls that tend to become contaminated by fermented bacteria growth caused by but not limited to air, natural light and inactivity between operation and scheduled cleanings.