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 - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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