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Fixed Marine Mushroom Ventilators Type E CB/T 4444-2017

Brand: DEYUAN MARINE
Type: Mushroom
Standard: CB/T 4444-2017
Model: Type E
Purpose: Cabin ventilating
On/Off type: Fixed
Nominal Diameter: 250~1500
Vent Head: Grade A marine steel
Vent Pipe: Carbon steel Q235A
Availability:

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.

Type E CBT 4444-2017 Mushroom ventilator-Deyuan Marine_00

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


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