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Product Description
Type BB Oblate Tube Gooseneck Ventilator with Directly Bent Neck
This ventilator looks like a goose's neck, so called gooseneck ventilator, it is usually used on oil tank or exposed deck.
Standards for such marine ventilators here are CB/T 4220-2013 and its previous version CB/T 296-1999，they are equal to other standards from other countries.
Type BB is Oblate circular tube with directly bent neck, is made of marine grade or seamless steel, to ensure reliability and durability.
Data sheet of Type BB oblate circular gooseneck ventilators:
| DN | Vent Pipe | Cover | Packing | Pressure Plate | Head Screw | Turn -buckle | Weight kg | |||||
| LxB | t | L1xB1 | t1 | L1xB1 | L4xB4 | L2xB2 | L3xB3 | L4xB4 | ||||
| 100 | 120x80 | 4 | 138x98 | 6 | 138x98 | 68x28 | 98x58 | 83x43 | 68x28 | 6 | 1 | 17.9 |
| 6 | 146x106 | 8 | 146x106 | 76x36 | 106x66 | 91x51 | 76x36 | 25.8 | ||||
| 8 | 33.1 | |||||||||||
| 150 | 150x120 | 4 | 168x138 | 6 | 168x138 | 98x68 | 128x98 | 113x83 | 98x68 | 8 | 3 | 21.7 |
| 6 | 176x146 | 8 | 176x146 | 106x76 | 136x106 | 121x91 | 106x76 | 33.9 | ||||
| 8.5 | 43.1 | |||||||||||
| 200 | 220x150 | 5 | 240x170 | 6 | 240x170 | 170x100 | 200x130 | 185x115 | 170x100 | 10 | 37.6 | |
| 6 | 246x176 | 8 | 246x176 | 176x106 | 206x136 | 191x121 | 176x106 | 50.3 | ||||
| 8.5 | 69.5 | |||||||||||
| 250 | 280x190 | 5 | 300x210 | 6 | 300x210 | 230x140 | 160x170 | 245x155 | 230x140 | 12 | 54.9 | |
| 6 | 306x216 | 8 | 306x216 | 236x146 | 266x176 | 251x161 | 236x146 | 55.7 | ||||
| 8.5 | 84.3 | |||||||||||
| 300 | 300x240 | 6 | 328x268 | 9 | 328x268 | 258x198 | 288x228 | 273x213 | 258x198 | 14 | 74.5 | |
| 9 | 98.7 | |||||||||||
| The weight is based on the height H as 900mm, does not include Weight of H1 | ||||||||||||
