This type of sewage vacuum tanker trailer is a newly developed vacuum truck.

The working theory of semi vacuum truck is using the vacuum pump to suck the air from the tank to make minus pressure.

This type of sewage vacuum tanker trailer is a newly developed vacuum truck.

The working theory of semi vacuum truck is using the vacuum pump to suck the air from tank to make minus pressure.

Then the liquid garbage is pushed into the tank by atmospheric pressure. The main purpose of truck is transporting the liquid garbage (sewage sludge, sewage, feces etc) or garbage collected by the small vacuum truck and suction excrement truck.