Interesting. What kind of circumference would such a pump have? Is it inserted through the pipe or is a larger diameter hole dug with pump and pipes dropped through that? What sort of current would such a pump require? I doubt if we are in such a dome because we are at the top of a hill that drops down to almost river level on all four sides within a mile or less. We certainly do have some hardpan in FL. When I dug a drain field for a bath I was installing in Lakeland [near Tampa] the 'uphill' end of the trench had water in it, and I was able to get to less than 1/2 inch [very carefully] of connecting the trenches with no seepage at all. Percolation rate through that stuff was almost nil. To use a spike stand sprinkler I had to take a hammer and screwdriver and pound a hole in the stuff and stand the sprinkler up in it. Fortunately it was only in a small part of the yard, but I had to extend the drain field another 10 feet to get past the hard pan so the thing would work. In my next life I plan to be rich enough to have the entire job done by the pros and not just the tank. I was fresh out of school then and the only option was sweat equity. BillR
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of archer Sent: Tuesday, November 13, 2007 5:08 PM To: Mercedes Discussion List Subject: Re: [MBZ] VAC LEAKS I would guess a well drilled four years ago would have a submersible pump lowered into the well. The pumps you describe may be auxiliaries to provide topside pressure. I've heard of people using "booster" pumps topside if the well is pretty deep since it takes part of the load off the submersible and can provide a better flow of water and higher pressure for the house and sprinkler system. Another possibility I can think of is that the well diggers went through hardpan into a "pressure dome" and the water level came up the pipe to where a surface pump could be used. We had that happen when we hand drove a couple of wells in the Tampa area when we first came to Florida. Nevertheless, that seems unlikely given the low water levels both underground and above ground nowadays. There "could" be a smaller jet pipe inside a larger "return" pipe. This would look like a simple pump system but could actually be a jet pump. Gerry ------------------------------------------- > From: "Bill " <[EMAIL PROTECTED]> > Perhaps, as the 3" [4"?] pipe is big enough, but when it goes down it also > has a single valve that seems to be the width of the pipe, and the > fittings > on the pump don't suggest anything like that. I'll look more closely next > time I am out there, but with the sprinkler and two pumps tied together > [one > pumps water into a pressurized tank and into the @175 gal aerator, the > other > from the aerator into a pressurized tank for the house] it is a bit of a > maze - and mostly underground. The new well was dug about 4 years ago. > BillR > ------------------------------------ > Bill may have a (jet?) pump with two pipes in the casing. Water is pumped > down one pipe and up the other pipe bringing additional water with it. > Those were common before submersible pumps were perfected. They were > > not very efficient. I forget the physics involved. Venturi principle? > Gerry > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.15.30/1127 - Release Date: > 11/12/2007 9:19 PM > > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
