Noise Reduction

The mechanical suction system is full of outstanding features.

One of the most important is the capacity to quiet sweep in town without disturbing people

The average sound level of a mechanical suction sweeper can always stay below 75 dbA.
This is basically due two main reasons.

1.    Low suction airflow. The louder source of noise in sweeper is always the suction turbine. The larger quantity of air coming out of the turbine exhausts will crate this typical noisy whistle. The larger is the quantity of air moved buy the turbine, the louder the whistle.
In a Dulevo Mechanical Suction sweeper the quantity of air necessary of an outstanding sweeping result is very little as is only required to retain flying dust.
This allows the mechanical suction sweeper from Dulevo to keep the noise level below standard

2.    The second louder part is a sweeper is the engine. The faster the engine turns the louder
This sound emission becomes even larger when a sweeper is equipped with a secondary engine
In a Dulevo mechanical suction machine the pick up system is extremely efficient being very productive even at the lower engine power rate therefore the engine speed can be kelp low and quiet. The faster the engine turns, the louder the machine is.

3.    Dulevo mechanical suction sweepers are already very quiet in Diesel version but they may become even quieter in CNG version
Two more cylinders, OTTO cycle operation an low rpm ratings makes a CNG DULEVO sweeper the quieter equipment for urban and industrial
This quiet operation is not only an advantage for the people around the sweeper but also for those inside the sweeper.
The sweeper driver takes advantage of this technology and enjoy his job in a comfortable, clean and quiet working place