Gooseneck ventilator for shipbuilding GOOSENECK VENTILATOR
People's Republic of China Shipbuilding Industry Standard CBT 4220-2013

This gooseneck ventilator is suitable for all types of ventilators installed on the open deck of ships.

Marine Gooseneck Ventilator CBT 4220-2013 Product Category:

CBT 4220-2013 marine gooseneck ventilators, marine AB type circular ventilators are usually marked as:

Gooseneck ventilator, round gooseneck ventilator AB100-4 CBT4220-2013
(The AB type welded circular gooseneck ventilator with nominal diameter of DN100 and air duct thickness t=6)

Gooseneck ventilator, round gooseneck ventilator AB150-6 CBT4220-2013
(The AB type welded circular gooseneck ventilator with nominal diameter of DN150 and air duct thickness t=6)

Gooseneck ventilator, round gooseneck ventilator AB200-6 CBT4220-2013
(The AB type welded circular gooseneck ventilator with nominal diameter of DN200 and air duct thickness t=6)

Gooseneck ventilator, round gooseneck ventilator AB250-8 CBT4220-2013
(The AB type welded circular gooseneck ventilator with nominal diameter of DN250 and air duct thickness t=8)

Gooseneck ventilator, round gooseneck ventilator AB300-8 CBT4220-2013
(The AB type welded circular gooseneck ventilator with nominal diameter of DN100 and air duct thickness t=8)

CBT 4220-2013 Marine round gooseneck ventilator Material of main parts:

CBT 4220-2013 Marine round gooseneck ventilator Technical agreement:

1. The surface of all parts of the marine gooseneck ventilator should be smooth, free of burrs and cracks, the surface of the weld should be cleaned, the attachment switch should be flexible, and the movable parts should be coated with lubricating grease;
2. When the cover of the marine gooseneck ventilating tube is closed, the edge of the air tube should be evenly pressed into the filler, and there should be continuous contact imprinting, and the imprinting width b≥t/2. The tightness test requires the root installation position and the classification of the ship. Social norms and regulations.
3. The parts of the gooseneck ventilator should be derusted (shot blasting, spraying or manual), and after cleaning, they should meet the requirements of Sa2 or St2 in GB8923.
4. After the marine gooseneck ventilator is manufactured, it should be coated with anti-rust primer twice.
5. After the marine gooseneck ventilator is manufactured, the inspection department will issue a certificate of conformity after the test is completed.