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Old 11-14-2018, 10:48 AM   #13
Gippetto
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Join Date: Aug 2009
Location: Woburn, MA
Posts: 127
Re: Can anyone tell me what these are for

Reminds me of the sand dispencer systems they used to have on the trackless trolleys when I was a kid in the Boston area. That would be the valving part, the sand resevoirs were maybe 100 pounds worth and were up top somewhere. One on each side.
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