Drain Cleaning Nozzles

A drain-cleaning spray nozzle attaches to the end of a high-pressure hose and is inserted into a drain or sewer pipe. It uses pressurized water jets to break up blockages, propel the hose deeper into the pipe, and flush or scour the interior pipe walls.

Key mechanics

• Rear-facing jets push water backward, which pulls/propels the hose forward into the pipe.

• Forward-facing jets (in some nozzles) are used to cut through blockages (roots, hardened scale, grease) ahead of the nozzle.

• The spray angle and number of jets affect the thrust (how fast/hard the hose goes forward) and cleaning effect (how well the pipe walls are cleaned).

• After pushing through the blockage, the hose is usually pulled back slowly so that the same jets flush the loosened debris out and clean the pipe walls.