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Product Description
Fixed Marine Mushroom Ventilators Type E CB/T 4444-2017
Mushroom Ventilator is installed on deck for natural ventilation or mechanical ventilation devices .
CB/T295 Mushroom Ventilation is generally used for kitchen and accommodation of ventilator regulating screw, simply turn adjusting handwheel indoors can reach the purpose of adjusting the opening size.
CB/T 4444-2017 is a new edition of CB/T 295-2000, type E of CB/T 4444 is equal to the type D of CB/T 295-2000.
Process requirements
1. Surface: should be flat and smooth, without sharp edges, distortion, or skew.
2. Size error: ±3mm, and the deviation of the verticality is 2/h1000 (h is the height of the ventilator cylinder)
3. The welding surface: free of cracks, slag inclusions, burn-through, and unfused defects.
4. The opening of the weather-tight cover of the fungus-shaped ventilator for ships should be flexible, and the movable part should be coated with neutral lubricating grease.
5. Derusting: the internal and external surfaces of the steel parts of the fungus-shaped ventilating cap should reach the Sa2 level or St2 level specified in GB/T8923, and then two antirust primers.
Structure descriptions:
1. Vent head
2. Rat-proof, insect-proof net or fire net
3. Air pipe
Obviously, type E CB/T 4444 is fixed type installed above an axial fan.
Type E CB/T 4444-2017 Models:
Nominal Diameter DN | D1 | D2 | H | H1 | H2 | t | Weight kg |
250 | 440 | 200 | 220 | 195 | 95 | 9 | 42 |
300 | 530 | 265 | 58 | ||||
350 | 620 | 310 | 205 | 105 | 78 | ||
400 | 710 | 290 | 345 | 10 | 96 | ||
450 | 800 | 375 | 116 | ||||
500 | 890 | 320 | 405 | 138 | |||
550 | 980 | 435 | 162 | ||||
600 | 1050 | 470 | 220 | 120 | 188 | ||
650 | 1160 | 500 | 219 | ||||
700 | 1240 | 520 | 244 | ||||
750 | 1320 | 540 | 270 | ||||
800 | 1410 | 560 | 240 | 140 | 304 | ||
850 | 1500 | 580 | 336 | ||||
900 | 1580 | 360 | 600 | 366 | |||
950 | 1670 | 620 | 401 | ||||
1000 | 1760 | 640 | 436 | ||||
1100 | 1930 | 680 | 510 | ||||
1200 | 2100 | 720 | 588 | ||||
1300 | 2270 | 760 | 672 | ||||
1400 | 2440 | 400 | 800 | 761 | |||
1500 | 2630 | 840 | 260 | 160 | 872 | ||
Note:the weight is of the ventilator only, not including air pipe |