How Does Hydrovac Excavation Work?

How Does Hydrovac Excavation Work?

Digging and excavating with conventional techniques is only sometimes practical. A more contemporary method must be used when conduits or pipes are buried in the excavation area. Using pressurized water and a vacuum system to remove the dirt while leaving a trench open, the hydrovac excavation technique is a non-destructive method of trenching. This article will examine the working of the hydrovac excavation services, the tools needed to carry out the excavation, and its advantages.

Process of Hydrovac Excavation

An operator points the pressurized water jet at the ground region to execute hydrovac excavation. The jet quickly cuts topsoil through, which loosens the soil as the water permeates and combines. The water jet can then loosen further dirt at lower depths by using the articulating boom that houses the vacuum system and hoses, which a second operator uses to remove the water and soil mixture as it is loosening. The procedure continues until the dig reaches the appropriate depth and size. The hydrovac truck is then taken to a designated disposal site after the job site is finished so that the collected slurry mixture can be offloaded and the debris tank can be cleaned and prepared for use again.

Equipment Involved in The Working Of Hydrovac Excavation

Equipment for hydrovac excavation is usually in the shape of carefully constructed trucks or trailers. The following are the main hydrovac excavation equipment functional components:

  1. Onboard Water Tanks

One or more onboard water tanks store clean water and will utilize to pressurize the water to create a stream that will cut through the dirt.

  1. Powerful Pimping System
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A motorized pump system that increases the water jet’s pressure to several thousand psi is powerful enough to cut through dirt and compact earth quickly and is comparable to the pressure levels found in a pressure washer.

  1. Articulation

An articulated boom with suction hoses will transfer the soil and water slurry from the excavation site back to the truck or trailer storage tank.

  1. Vacuum System

A vacuum pump or blower system that pulls air through vacuum tubes to recover slurry

  1. Debris Tank

A debris tank large enough to hold the slurry deposited by the vacuum system.

  1. Water Heating System

When the ground is frozen, certain hydrovac excavation trucks have a boiler that can heat the water before it is pressurized.

Advantages of Hydrovac Excavation

Hydrovac services can resolve numerous issues as hydrovac companies offer a safer approach to digging and finishing excavations. It provides a solution that reduces interruptions and harm to current infrastructure. Other advantages are:

  • Hydrovac services offer a secure method of finishing excavations without requiring a worker to be in the trench to operate the excavation machinery.
  • It protects existing infrastructure by excavating in a controlled manner
  • Hydrovac companies ensure no nearby soil is disturbed, lowering the risk of fatal cave-ins.
  • Compared to the conventional excavation procedure, the hydrovac excavation process is quicker.
  • Hydrovac excavation uses only water and an air vacuum, requiring the least amount of additional hardware.
  • Hydrovac companies place the hyrdrovac equipment far from the work area, easing congestion.
  • It reduces harm to pipelines and current infrastructure.


Hydrovac excavation is a growing alternative to mechanical excavation. Hyrdrovac companies widely use This technique to uncover existing utility cables and piping systems with minimum risk of fractures or tears. Hydrovac excavation trucks are used on construction sites to dig practically any material, including hard-packed clay, ice, sand, and gravel. If you need to excavate, always rely on the top hydrovac services to supply high-quality containers and vacuum systems tailored to your business size, cost, and project specifications.

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