Roof ventilators :

I)Radilal roof ventilators :

In his model the propeller is a backward curved made of sheet metal ST-13 and to achieve the maximum resistance is coated three layers of epoxy paint .

In order to satisfy the customers needs IranHavasazan Company has made a direct driven as well as belt driven models . There are eight different sizes from 225 up to 999 millimeters impeller diameter.

II) Axial roof ventilators :

From places that the static pressure is very small he axial roof ventilator model "RRV" is recommended

ARV is made out of base plate, electric motor and standard cover.

Tis is very similar to HRK, axial ventilator, exept the curvature of the blades, on the propeller, which is reverse, it pulls the air instead of pushing it.

The cover could be for horizontal or vertical discharge. ARV is made in sizes 301 up to 550 mollimeter propeller diameter.