Allvac®AV850 Trailer 3.5T

This compact hydro excavation unit is ideal for a wide range of applications such as:

  • Pot holing to locate underground services
  • Keyholing
  • Utility microsurgery
  • Sign and pole installation
  • Excavating of small areas for shrub planting and trenching
  • Micro trenching
  • Clean up drill fluid

The Allvac® AV850 offers operators a very cost-effective hydro excavation option. This unit can be lifted on and off your truck with its forklift slots in the subframe or can be mounted on one of our purpose built 3,500kg trailers which allows you to tow it with a ute that has 3,500kg towing capabilities.

With the spoil tank mounted horizontally and tipping hydraulically it gives the whole unit a very low centre of gravity when travelling loaded which negates the significant hazard of loaded trailers tipping if they are designed with permanently tilting tanks. Further H&S considerations have been made in being able to open the rear door whilst the tank is horizontal, then move away from the tipping area and activate the tank hoist on a corded controller.

The combination Double Jet Digging Wand allows a single operator to pothole with the wand combining the suction wand and two water blaster jets incorporated to dig a 165mm diameter hole.

Mounted on a custom build trailer or supplied as a skid mount so you can have it as a portable unit make it very versatile.

Additional information

Tank Type


Tank Material


Tank Size

850 litre spoil & 500 litre freshwater tanks

Rear Tank Door

Hoist & full rear opening door

Vacuum Pump


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