SV: Operatioin of Feedwater Heaters.

[nw-mailing-list at nwhs.org]

And then I note, on a picture of a Van Swearingen (sp?) Berkshire, what 
appears to be a side check mounted about 3/4 the way up the boiler 
side, at about the water line, I'd think.

I think that top feeds came in in the mid(?) '30s.  The Niagara picture 
I have shows no feed piping at all - under  the jacket, I would assume.

pete Groom

On Oct 22, 2004, at 9:39 AM, nw-mailing-list at nwhs.org wrote:

>                     Another Suguestion.
>
>  
>
>                    Have  ben thougt a Third  reason for Top feed, Then 
> the Feedwater enters thru the checkvalves and heats up, the Oxygen in 
> the water goes out with the steam,
>
>                    With  Side feed, feedwater mixes with the water 
> already in the bolier and  the oxygen reacts with the steel in the 
> boiler as corosion.
>
>                   
>
>                     But some roads, NYC for example  mostly uses side 
> feed on their locomotives, maybe because they get rid of the Oxygen in 
> the Feedwaterheater?
>
>                   . . . 
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