Drain Cleaning

STORM WATER PIPES:

When cleaning Storm water pipes by means of high pressure water jetting the following procedures are followed:

  • Identify the problem by physically checking the volume of debris in the line with a high powered torch in order to choose the right nozzle.
  • For example if the line is 25% filled with sand (450mm pipe) you would use a six back jets 35 degree nozzle and start from the lower end manhole.
  • Send the nozzle upstream for 6 to 8 meters and pull back one meter at a time while rotating the Nozzle.
  • The second time, send the nozzle 10 to 15 meters and pull back to the manhole. Repeat this action until you reach the next manhole.
  • Block the manhole from which you are working from to prevent contamination of the next section.
  • The jetting has to stop with intervals to empty sand manually.
  • Always jet from lowest manhole and pull sand and debris back with the natural flow of the pipe.
  • Depending on the volume of sand and debris about 60 to 120 meters can be achieved per day In pipes with less volume 120 to 200 meters can be achieved.
  • Proper training in operating this machinery together with health and safety is necessary to ensure good results and safe working conditions.

SEWER PIPES:

  • Work procedures are very much the same but sewer lines are active and normally have a steady water flow. The pipes on average have smaller diameters.
  • Sewer lines often block and different nozzles are used. For example a nozzle with front and back jets will be used to penetrate the blockage.
  • In general the procedures are the same working from lower manhole to the higher manhole and moving debris backwards to the manhole you are working from.
  • With sewer lines the work is easier and up to 300 meters per day can be achieved.

HIGH PRESSURE PUMP & SPECIFICATIONS:

  • Hardened plungers (standard)
  • Mild steel /Stainless steel head (optional)
  • Manually operated un‐loader valve (standard)
  • Flow rate – 136 litres per minute at 1800 rpm
  • Working pressure 0 – 300 bar (standard)
  • 59kw input (standard)

DIESEL MOTOR:

  • 6 cylinder Air Cooled Diesel 70kw (standard)
  • Manually operated throttle (standard)
  • Safety shut off feature (standard)

HEAVY DUTY TRAILER:

  • Welded channel iron (standard)
  • 2500kg capacity
  • Single rubber ride axle (standard)
  • Hot dipped galvanized chassis and mud guards (standard)
  • SABS approved towing coupler (standard)
  • Hand brake and over-rider brake (standard)
  • Heavy duty jockey wheel (standard)
  • LED lights (standard)
  • Stabilizer jacks(standard)

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