The GM-3000 is a 3,000-liter vacuum truck (also called a vac truck, hydrovac truck, or pumper truck) mounted on a 4-ton chassis, for municipal and industrial liquid waste removal — self-contained on its own vehicle, with hydraulic tank tipping and door opening built in.
Page last updated: September 9, 2026
A 390 cum/hr vacuum pump, driven off the vehicle's gearbox-fitted PTO, generates high vacuum in the tank to siphon effluent, liquids, and sludge out of sewer lines, septic tanks, lift stations, and catch basins through a 3" x 15m suction hose. A sludge stirring arrangement uses high-velocity air to convert solid silt into a liquid or semi-liquid slurry the pump can draw up, and a blow-back system can then discharge just the water content of the tank under pressure, so the load carries away the sludge without hauling unwanted water weight. Once full, the tank tilts and the rear door opens hydraulically to discharge at the disposal site. Primary and secondary ball-float shut-offs, plus a basket strainer, protect the pump from solids and tank overflow.
Available hydraulic features vary across the GM-series by tank size. On the GM-3000:
Hydraulic door locking becomes available from the GM-5000, and a hydraulically operated suction hose reel on the GM-8000.
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Yes — the GM-3000 is the first model in the GM-series to include both hydraulic tank tipping and a hydraulically opening rear door.
Not on this model — door locking is manual screw-type on the GM-3000. Hydraulic door locking is available from the GM-5000 up.
Yes — a derrick arm is available as an option on every model in the GM-series, including the GM-3000.
A 3" (75mm) x 15m heavy-duty PVC hose, matched to its 390 cum/hr vacuum pump flow.