Services Hotline:0086-533-7181589    0086-533-7486796

Shandong Freshair Co., Ltd.

0086-533-7181589 0086-533-7486796

Contact Us

Company headquarters: No. 9 Qingtian Road, Linzi District, Zibo City, Shandong, China


Tel. of the Marketing Department:0086-533-7181589


Fax of the Marketing Department:0086-533-7171419

Tel. of the After-sales Service:0086-533-7486837

Technical Services:0086-533-7486687

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DDF series centrifugal ventilator

DDF series centrifugal ventilator


   Product characteristic:

  1. Explanation of ventilator model:



  2. The common drive and installation forms of the ventilator like chart show:


3.The ventilator should working in the gas environment, which the air does not contain large amount of caustic gas; it does not contain the acidic gas, the alkalinity gas, and the ignitable gas; the dust particle matter is not bigger than under 150mg/m3.

4.The product is made of quality steel plates, then electrostatic spray coat Also it can be made of quality galvanized steel plates. Spare parts are dieformed. The final assembly is done on assembly line. Main pars are produced by advanced crafts, such as rolling pressing impeller, undercutting shell, TOX riveting and etc.

5. The ventilator is with the FC multi-blade impeller, it is low noise, small volume, structure reasonable, long service life, broad use, multi-speed and so on the good characteristics; used safely and reliably.

6. The DF series ventilator is, and the drive is V-belt transmission. The standard high quality bearings are used in the product, enhances the nonbreakdown running time. Also, the V-belt is a kind of strong V-belt, the belt cone wheel is fixed by a cone distend tight structure; the adjustment and installation are extremely convenient.

7. The DDF series ventilator is driven by Y series electric motor directly, and it is single inlet structure (there is only one inlet). It is with the special-purpose attachment flange, can connect the air pipeline directly to save the installation space.

8.The machine performance that refers in this catalog is under the standard condition. Namely atmospheric pressure 101.325kPa, gas temperature 20, density of gas1.2 kg/m3. The performance parameters list in the technical parameter table is all normal operation parameter of the ventilator (the red shadow area of the performance curve).

9.The DF series ventilator can be made as the explosion-proof type air blower, and has obtained the explosion-proof certificate, the explosion-proof rank ExdⅡBT4.

10.Please give clear indication of the model, the form of installation, flux and pressure using galvanized steel plates or not, and being with flange of venthole or not; when you order.

11.According to customers' requests, our company can design and make other form air blower for other installation form and the special use.

Note: fan performance parameters and fan structure size, the company has the right to modify, then without notice.


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