SUTTNER ST-36 Sludge Pump Kit - Heavy Duty Suction head can be adapted to connect to a 1/4" quick coupler (nozzle coupler). 15ft of 1-1/2" heavy duty "suction type" discharge hose (suction hose will not collapse like lay flat hose). 4000psi rated. Acts like a sump or trash pump. Attaches to pressure washer and turns it into a high output pump. Great for flood clean up, car wash pits, draining pools or chemical spills. Empty rain water from construction sites, clean up chemical spills or remove slurry from a car wash bay. Water flowing through the high pressure nozzle creates a powerful venturi suction that vacuums up slurry solutions. Vacuums up liquid slurries at a ratio of about 1:11 Example: Using 4 GPM will produce an output of 44 GPM. Nozzle Orifice Sizes Available: #04.0 - 2.5 gpm minimum #04.5 - 3 gpm minimum #05.0 - 3.5 gpm minimum #05.5 - 4 gpm minimum #06.0 - 4.5 gpm minimum