Abstract: A launcher for heat exchanger tube cleaning projectiles using operator selected compressed air application for manipulating launcher operating components including hydraulic bolt, projectile plunger, and water valve to fire projectile with pressurized water, and to reset operating components for subsequent projectile firings. Launcher has means for venting heat exchanger tube over- or under-pressure occurring in practice, and further has visual indicator of force applied in firing projectiles, and of tube being clear after exiting of projectile from the tube.

Abstract: A tube cleaning implement with elongate shaft supporting a brush in a median section and similar scrapers or wipers fitted to opposite ends of the shaft to provide for a scrape-brush-scrape cleaning action of tube interiors, and to provide a reversible implement having extended useful life.

Abstract: A machine for cleaning coils in HVAC installations including particularly the coils located in outdoor HVAC units and coils located in interior ductwork the machine comprising a shell housing enclosing cleaning fluids, an electrical system for line power or battery operation, and a fluid control system for selecting cleaning fluid and the pressure and volume of fluid applied in cleaning coils.

Abstract: A tube scraper for removing deposits from the interior surface of heat exchange tubes, the scraper being fitted with a set of diverging scraper blade arms mounted on an arbor in nested relationship such that scraper blades have overlapping scraping edges.

Abstract: An apparatus and method for removing water and debris from a cooling tower basin, discarding debris and returning clean water to the basin.

Abstract: An apparatus and method for removing water and debris from a cooling tower basin, discarding debris and returning clean water to the basin.

Abstract: A tube cleaning machine for industrial smooth bore tubes and enhanced tubes in which the machine includes a rotary brush with means for selecting brush rotary speed for optimum cleaning of the smooth bore and enhanced tubes, and in which the machine includes a water side and a chemical side for supplying a cleaning medium to tubes being cleaned.

Abstract: A large flexible plastic bib that is conical or funnel shaped with its large open end supported by a frame for positioning near a source of effluent to be collected, and the bib small open end positioned to direct liquid and debris toward a floor drain.

Abstract: A coupling particularly suited for brushes for tube cleaning operations includes interfitted shaft and brush coupling members retained by a locking mechanism in axial alignment for rotation in tube cleaning operations. The shaft and brush coupling interfit and the locking mechanism are suited for rapid mounting and replacement of the brush coupling. In a preferred form the locking mechanism comprises a sleeve and spring in nested reglation to each other mounted axially of the coupling. A brush coupling adapter may form part of the coupling for receiving a standard brush element.

Abstract: A quick load air gun for cleaning conduits by propelling a foam projectile through the conduit by means of a compressed air charge. The air gun includes a quick load port for inserting projectiles into the gun chamber, and a compressed air circuit including an air control valve operated by a trigger for admitting a compressed air charge into the chamber, and for venting the chamber to ambiance on release of the trigger.

Abstract: A tube scrubber comprises an elongate body symmetrical about its longitudinal axis, having a central core with threaded stem for connection to a rotary driving device, and a plurality of flexible arms or webs extending outward from the central core and terminating in longitudinally extending cutting edges which scrub the inner surface of a boiler tube and the like.

Abstract: A method and apparatus for cleaning ducts such as used in HVAC systems includes as part of the apparatus a propeller having pitched, flexible blades for rotatably engaging the interior duct surface for dislodging soot and propelling a cloud of soot along the duct to an evacuation point. The method includes establishing a temporary block in the duct, moving the propeller along the duct for dislodging soot and generation a dust cloud, and evacuating the duct by drawing the soot cloud created by the propeller.