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Manufacturer: Vetus

Vetus louvred air suction vent ASV

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SKU: ASV020A

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A marine diesel engine needs sufficient air in order to function correctly.

The volume of combustion air required is appoximately 6.1 m3 per kW (4.5 m3 per hp) per hour, based on a maximum air velocity of 3m/sec.

In addiction to combustion air, the engine also requires sufficient ventilation air to dissipate the radiated heat.

The volume of ventilation air requires is about the same as the combustion air needed.

The design of the Vetus air suction vents is based on these principles.

The model numbers given in the table relate to the engine horsepower for which they are suitable.

When designing the engine room layout, it is therefore easy to calculate the size of the air vents required.

Do not forget to allow for extra vents to extract the heat from the engine space as well. For example: a boat with an engine of 60 hp will require for the combustion and ventilation air, 2 louvred air suction vents type 60 (1x Starboard + 1 x Port) or 4 type 30 vents (2 x Starboard + 2 x Port).

The frame is made of polished anodised aluminium and the grilles of naturally anodised aluminium.

Air suction vent ASV	20	25	30	40	50	60	70	80	90	100	125	150
Dimensions in mm
A	300	350	360	450	490	570	590	660	670	730	750	890
B = Cutout	280	330	340	430	470	550	570	640	650	710	730	870
C	117	117	130	130	146	146	159	159	172	172	198	198
D = Cutout	97	97	110	110	126	126	139	139	152	152	178	178
E = Cutout radius	R 48,5	R 48,5	R 55	R 55	R 63	R 63	R 69,5	R 69,5	R 76	R 76	R 89	R 89
Free flow area in dm2	0,83	1,00	1,22	1,59	2,02	2,41	2,83	3,21	3,63	4,00	5,03	6,08