Standard Spray Angles And Their Functions
Jet Angle Function & Usage Considerations
A single forward jet is used for boring through blockages. Generally these
forward jets are used in combination with higher thrust angles.
Used on our Degreaser/De-Icer nozzles (3 fwd. jets) to provide a wider forward cleaning and/or pushing action vs. a single forward jet. Since forward jets have a reverse thrust effect, there should be a minimum of two rear jets for each forward jet to provide forward nozzle movement.
Forward direction wall cleaning. Unless used on a lance (where no propulsion is needed), there should be a minimum of two rear jets for each forward jet to provide forward nozzle movement.
Side jets directly impact the pipe wall and deliver the most cleaning energy but must be combined with a thrust angle in order to create pulling power. A single 90° jet can be added to the BN or RH style nozzle to aid in the navigation of tight corners.
These are thrusting angles where the system's energy is utilized primarily for maximum pulling power on longer runs with minimal flushing action.
Jets using this angle provide a good combination of flushing and thrusting
action with good pulling power for use on medium runs.
This popular jet angle provides very good cleaning power with reasonable
Jet angles in this range use the system’s energy primarily for high impact
cleaning of pipe walls. The trade off is minimal pulling power.
Determining the correct jetting hose NPT connection
The hose diameter cannot be used as an indication of the thread size on the hose connector fitting. If you are not certain, measure the outside diameter (O.D.) of the fitting's thread at the very end, round to the closest reference measurement below and note the corresponding NPT size.
Actual O.D. Measurement of hose fitting
National Pipe Thread Size (NPT)
Example: In the picture to the right, the fitting is measuring an ACTUAL O.D. of 1/2", making it a 1/4" NPT fitting.