Nozzle types
Radial nozzle
This type of nozzle is used mainly for cleaning of the entire circumference of the inner pipe wall. The nozzle inserts are radially distributed over the entire circular cross-section allowing for a uniform distribution of the water jets. This application is best suited for pipe sizes ranging from DN 50 to DN 1200.
The radial nozzle is not as effective in large diameter channels because not enough cleaning energy is applied to the pipe invert to achieve a satisfactory cleaning. One aspect affecting health and safety of the operational personnel is this nozzle types tendency to form aerosols during sewer cleaning.
High pressure cleaning - Camera inspection [Source: STEIN Ingenieure GmbH]
Radial nozzle [Source: STEIN Ingenieure GmbH]
Radial nozzle test [Source: STEIN Ingenieure GmbH]
Radial nozzle in the sewer channel [Source: STEIN Ingenieure GmbH]