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 - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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