Internally Operation Mushroom Ventilators with Deflector Hood CB 455-1965 Type B

Product Description

Internally Operation Mushroom Ventilators with Deflector Hood CB 455-1965 Type B

Mushroom with deflcetor serial Ventilators are installed on deck or Ballast water tank and fuel oil tank washing sewage, etc for natural ventilation.

CB/T 445-1965 Mushroom Ventilation with deflctor hood have two two types different in location of adjusting handwheel, external and internal type, each can reach the purpose of adjusting the opening size. Type B is internally opening and closing model.

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. Cover

3. Watertight cover

4. Axial

6. Rubber mat

7. Deflctor

8. Handwheel

9. Sleeve

Type B CB/T 445-1965 Models:

Model	DN	D	D1	D2	D3	H	H1	H2	h	Weight(kgs)
B	100	200	156	136	100	225	50	132	40	3.27
	150	300	206	180	140	288	66	176	60	5.87
	200	400	256	236	140	333	90	220	80	9.77
	250	500	306	286	160	374	100	261	100	15
	300	600	356	336	160	420	120	300	120	21
	350	700	406	286	200	490	130	336	140	25.88
	400	780	456	436	200	526	130	360	160	37.7
	450	880	510	492	225	570	140	385	175	48.4
	500	980	560	542	250	656	170	443	200	59
	600	1160	660	642	250	745	180	503	240	71.6

Internally Operation Mushroom Ventilators with Deflector Hood CB 455-1965 Type B

Product Description

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