Mushroom Ventilators with Deflector Hood CB 455-1965 Type A Externally Operating

Product Description

Mushroom Ventilators with Deflector Hood CB 455-1965 Type A External Operation

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.

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 A CB/T 445-1965 Models:

Model	DN	D	D1	D2	D3	H	H1	H2	h	Weight(kgs)
A	100	200	156	136	100	180	50	132	42	3.64
	150	300	206	180	140	235	66	176	62	5.7
	200	400	256	236	140	285	90	220	82	10.5
	250	500	306	286	160	333	100	261	104	15.5
	300	600	356	336	160	375	120	300	122	22.1
	350	700	406	286	200	415	130	336	142	28.2
	400	780	456	436	200	445	130	360	162	37.9
	450	880	510	492	225	481	140	385	177	47.3
	500	980	560	542	250	540	170	443	202	59.1
	600	1160	660	642	250	600	180	503	242	77.6

Mushroom Ventilators with Deflector Hood CB 455-1965 Type A Externally Operating

Product Description

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