One-piece stainless steel cleaning nozzles from USB - Sewer Equipment Corporation are neither bonded nor screwed together, enhancing strength and significantly reducing the chances of failure under pressure for greater safety and optimum performance. Advanced, optimized 3-D Hydro Mechanics, located in the lower part of the chamber, completely eliminate pressure in the upper portion of the nozzle and prevent explosion in a sewer line or manhole. The water coming from a pressurized hose is immediately guided directly into channels and smoothly directed into one-piece ceramic nozzle inserts, which do not require winglets or flow straighteners, because of the hydromechanics in and out of the chamber. The result is a highly efficient jet pattern. They are engineered and manufactured according to DIN EN ISO 9001:2000 to remove sand, mud, silt, grease and obstructions from sewer and stormwater lines. 866/408-2814; www.usbsec.com.