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Does anyone really understand how the vacuum hatch is supposed to operate on the various vans we are towing about I have a Roadstar dirt roader and I am unsure if to leave the hatch open or closed when travelling ,so many vans and so many different ideas .What,s true

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Reply By: Red Frog - Vic - Sunday, Oct 28, 2007 at 14:41

Sunday, Oct 28, 2007 at 14:41
leave it open when travelling so it greats pressure inside to keep out dust.

I've never heard it called mega draw feedback though.
AnswerID: 268746

Follow Up By: Member - JohnR (Vic)&Moses - Sunday, Oct 28, 2007 at 14:43

Sunday, Oct 28, 2007 at 14:43
I didn't think you would be into mega-_Affordable_Storage_Drawers.aspx either Ray ;-)))
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FollowupID: 531490

Follow Up By: Red Frog - Vic - Sunday, Oct 28, 2007 at 14:46

Sunday, Oct 28, 2007 at 14:46
lol, I now see other mega draw posts as well John, I'm a bit slow on the uptake here, perhaps I should move north :)
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FollowupID: 531491

Reply By: Member - Cameron B (WA) - Monday, Oct 29, 2007 at 20:27

Monday, Oct 29, 2007 at 20:27
G'day Andrew, I worked for large caravan manufacturer for a number of years and can assure you the purpose of the "pressure hatch" fitted to your roof is to pressurize the internal airspace of your van whilst travelling. This basically keeps dust out by creating a positive air pressure inside your van when you are moving. Keep it closed during dusty driving and any vents or air gaps will create a "vacuum" or negative air pressure inside the van and you will have loads of dust to clean up afterwards (or the missus!!). Hope this helps.
AnswerID: 268998

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