Hydro Excavation Trucks

NDD is a safer way to expose underground services using high-pressure water to break up material and vacuum suction to remove it, without tearing through cables and pipes the old-fashioned way.

Hydro excavation is the method. NDD is the result. Most people use the terms interchangeably, and on site it usually means: water + vacuum = clean exposure.

Common jobs include:

• Service locating and potholing
• Trenching and slot trenching
• Pole holes and sign foundations
• Valve pits and access pits
• Clean-ups, slurry recovery, and vacuum loading

Because when services are involved, the cost of a strike is brutal. Hydro excavation helps:

• Reduce the risk of damaging services
• Improve safety on congested sites
• Minimise reinstatement and rework
• Keep work moving with less downtime

Yes, when done correctly with the right technique and site controls. Always follow your procedures, dial pressures appropriately, and work to the conditions and service requirements on site.  Always contact Before You Dig Australia for Plans and safety information. https://www.byda.com.au/

The DrainVac can do NDD as well as drain cleaning.  On the rear of the DrainVac it has 180m of 1” hose connected to a Pratisolli pump that puts out 346 lpm to clear any blockages in drains with selected Nozzteq nozzles.

Both matter, but they do different jobs:

• Flow (LPM) helps digging speed and flushing
• Pressure (bar/psi) helps cut and break material
  A well-matched system gives you fast, controlled excavation.

Again, both:

• Airflow helps move material quickly
• Vacuum helps lift heavier material and work at depth
  It’s the combo that counts, not a single number.

Big time.

• Larger hose can shift more material faster
• Smaller hose can be easier to handle but may slow production
  The best option depends on what you dig most often.

Spoil is vacuumed into the tank. Disposal depends on what you’ve excavated and site rules. Keep an eye on weight, material type, and disposal requirements.

It comes down to payload, legal weights, and the size of system you need:

• 6×4 can suit tighter sites and lighter setups
• 8×4 suits higher capacity and heavier-duty configurations

Because reliability matters. VTS builds for Australian conditions with a focus on practical, serviceable design. No computers – no worries. Less complexity, easier fault-finding, and less downtime.

Tell us what work you’re doing and where you’re doing it, and we’ll recommend a configuration that suits your jobs and your crew.