Type

Name

Nominal dia DN(mm)

A

Inside on-off Hood ventilator

150-350

B

Outer on-off obturation ventilator

250-1200

C

Outer on-off obturation axial flow ventilator

250-1200

D

Fixed ventilated canister

200-1200

E

Inside on-off obturation ventilator

150-350

F

Outer side on-off obturation ventilator

150-900