Square diffuser with vanes in circular radial arre ...

Vanes in circular radial arrengement, inclined in ...

Circular diffuser with vanes in circular radial ar ...

Circular diffuser with vanes in radial inclined ar ...

Square diffuser with vanes in circular radial arre ...

Square diffuser with vanes in circular radial arre ...

Circular diffuser with vanes in circular radial ar ...

Rectangular diffuser with vanes in radial .