NA-05 - Cleaning: Cleaning Nozzles
Summary
Factors influencing the cleaning performance
Nozzle:
• Number and diameter of openings
• Type of nozzle inserts
• Jet deflection in the nozzle? (Pressure loss)
Sewer channel
(Cleaning objectives):
• nominal size, length, depth material
• structural condition
• quantity and type of deposits
• flow condition and level of backup.
Vehicle (output parameters):
• maximum operating pressure
• flow rate and volume
Hose (pressure loss):
• Nominal size, material, length
Hose and nozzle:
• rate of advance
• withdrawal speed
• number of cleaning cycles
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