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**Bunkerbarge** · 01-07-2007

You don't have a bigger picture do you Jankers? I can't tell much from that.

More generally the curved horn type of fitting is an inlet. Originally rotatable so that it could be pointed into the wind. These remained a similar shape when fans were introduced and still used as inlets.

Outlets would usually be less obvious and may not even exist at all, simply relying on escaping air pressue from around the space in general. This arrangement would be found where forced draught was required such as in machinery spaces etc.

The Mushroom type of fitting is usually a vent and not part of a forced draught arrangement. You may find these on tanks or cargo spaces and are simply to allow the space to breath rather than over or under pressurise.

01-07-2007	#2 (permalink)
Bunkerbarge Moderator Join Date: Jul 2005 Location: Halifax, Yorks: Nassau, Bahama's:Port Canaveral, USA: and all points in between. Real Name: Richard My Models: Robbe U-47, Deans Marine Cossack, Steam Coaster, Revell U-Boat, Motorcycles. Visit Bunkerbarge's Gallery Posts: 3,580 Images: 230	You don't have a bigger picture do you Jankers? I can't tell much from that. More generally the curved horn type of fitting is an inlet. Originally rotatable so that it could be pointed into the wind. These remained a similar shape when fans were introduced and still used as inlets. Outlets would usually be less obvious and may not even exist at all, simply relying on escaping air pressue from around the space in general. This arrangement would be found where forced draught was required such as in machinery spaces etc. The Mushroom type of fitting is usually a vent and not part of a forced draught arrangement. You may find these on tanks or cargo spaces and are simply to allow the space to breath rather than over or under pressurise. __________________ “Dirty British coaster with a salt-caked smoke stack, Butting through the Channel in the mad March days"