CAT CLASS: HQ-10246

Up to 500 gal Vacuum Excavator

Up to 500 gallon vacuum excavators are trailer-mounted potholing units designed to expose underground utilities without hand digging. These compact systems serve locate-and-verify work where a crew would otherwise shovel test holes throughout the day. For projects requiring continuous excavation or larger volumes of spoil removal, the 500-1,200 gal size class offers greater capacity and productivity.

Models

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Cat classes

Pick a size class — capacity and reach differ across the range.

Key specifications

Specification	Typical range	What it means
Spoil tank capacity	Up to 500 gal (1,900 L)	Defines the volume of excavated material the unit holds before requiring disposal.
Airflow	42–4,131 CFM	Vacuum suction power; higher CFM moves heavier soils and debris more quickly.
Engine power	17.9–380 hp	Drives the vacuum blower and high-pressure water pump; larger engines support continuous duty cycles.
Water tank capacity	40–4,542 L	Supplies the hydro-excavation nozzle to loosen soil before vacuum extraction.
GVWR	3,500–39,009 lb (1,588–17,695 kg)	Gross vehicle weight rating determines towing vehicle requirements and road legality.

How to choose

Up to 500 gallon units suit potholing and utility locate work where the objective is to expose a handful of underground lines per day rather than move continuous volumes of soil. Operations that uncover three to six utility crossings in a shift, then backfill immediately, match this size's dump-and-return cycle. When the scope involves trenching, large-diameter pipe installation, or all-day excavation in a single location, the 500-1,200 gal Vacuum Excavator class provides the spoil capacity and water reserve to sustain production without frequent offloading trips.

What this size handles

Locating fiber optic and telecom lines before horizontal boring
Exposing gas mains and water services at marked crossings for depth verification
Potholing around storm and sanitary laterals during site utility mapping
Daylighting electrical conduit at pole bases and service entry points
Uncovering valve boxes and cleanout access points in congested rights-of-way
Test holes for subsurface investigation and soil sampling in urban corridors

Safety & operation

High-pressure water systems (206.7–3,000 psi) require operator training to prevent hand and foot injuries from the cutting stream
Vacuum hose recoil and whip hazards when suction breaks free from heavy debris or compacted soil
Spoil tank pressurization and venting protocols prevent blowback during lid opening and material discharge
Proximity to live utilities demands strict adherence to depth callouts and hand-digging the final approach to marked lines

Transport & logistics

Trailer-mounted configuration tows behind pickup trucks or utility vehicles; GVWR from 3,500 to 39,009 lb
Lightest models (under 7,000 lb GVWR) tow with standard 2-inch ball hitches; heavier units require pintle or gooseneck couplers
Compact footprint permits maneuvering in residential streets, parking lots, and congested job sites

Power & supply

Self-contained diesel or gasoline engines eliminate dependence on external power sources
Fuel tank capacities from 5 to 114 gallons support multi-shift operation on potholing jobs
Onboard water tanks hold 40 to 4,542 liters; larger reserves reduce refill interruptions during extended locate sequences

Frequently asked

What differentiates a sub-500 gallon unit from larger vacuum excavators?

Spoil tank capacity and duty cycle. These trailer units excel at intermittent potholing—expose, verify, backfill, move—rather than sustained excavation that fills multi-thousand-liter tanks.

How many utility locates can a 500-gallon unit complete per day?

Typically three to eight potholes depending on soil type, depth, and spoil disposal proximity. Dense clay and deep utilities reduce output; sandy soils and nearby dump sites increase it.

What towing capacity is required for these vacuum excavators?

Minimum tow ratings range from 3,500 lb for the lightest models to over 39,000 lb for fully loaded units. Match the tow vehicle's GCWR to the excavator's maximum loaded weight plus trailer.

Compare popular models

Find by spec →

Normalised to the same units. A dash means the figure was not published.

Model	Operating weight	Max dig depth	Max reach	Engine power
Vermeer EV150 Vacuum Excavator	1,799 lb (816 kg)	-	-	27 hp
Vermeer VXT600 Vacuum Truck	40,001 lb (18,144 kg)	-	-	510 hp
Vermeer LP Mini Vacuum Excavator	5,201 lb (2,359 kg)	-	-	27 hp
Vermeer VX75 Vacuum Excavator	24,000 lb (10,886 kg)	-	-	74 hp
Vermeer VXT300 Vacuum Truck	30,501 lb (13,835 kg)	-	-	350 hp
Vermeer VXT400 Vacuum Truck	32,498 lb (14,741 kg)	-	-	365 hp