Posted by olddog on October 22, 2008 at 05:36:56 from (24.229.174.49):
In Reply to: vacuum posted by TimWafer on October 21, 2008 at 08:53:17:
Vacuum pumps pump air and are rated in CFM. ASME rated at atmosphere pressure (14 PSI) and NZ rated at 15 inches (working)vacuum. I usta could rebuild Surge Alamo pumps in my sleep. They all used oil to lube the vanes (either metal or fibre) as well as lube the bearings. The oil is recycled in the reclaimer. You may be able to get along with heating oil for lube but consider the consequences of compressing it as a vapor. Also consider a muffler on it in a residential setting. Your variables are the size of the suction line, height that you are lifting it, (20 ft may be max) and your patience for time to draw it off. Good news .. we recommended to flush any pump whose oil was contaminated with milk or water; with diesel! There are those around here using milker (vacuum) pumps to draw septic tanks.
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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