Shopsmith Forums

Had to drain the pool.
since I never throw anything away, I remember that my father-in-law use an old fashion siphon.

Search through the junk bin and found it and it worked as well as I remembered`.

What is it called and I wonder if you could still buy them now.

You put a garden hose on one end connected to the water supply, another garden hose on the other end, turn on the house water and the house water squeezes through a little hole and the pool water is sucked up through the rectangular hole and out the exit hose.

love it, no moving parts, takes a little time but works.

oh to make it SS releated, I used my SS band saw to cut the end of the hose off. :-)

Don't know under what name it was sold but it sounds like it operates by the ventury effect. Similar to the old bug sprayers that were made from a bicycle pump and a one quart container. When a high velocity stream of air was blown over the small opening in the quart canister it formed a low pressure zone above the opening. This caused the fluid in the canister to move up a small tube in the canister and into the stream of air thus depositing the contents of the canister wherever the tool was pointed. They were used for anything from bug spray to garden chemicals. This device seems to operate by a similar principle.
Am I showing my age yet??:D
Bill V

They make plastic ones for filling and draining water bed mattresses

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It's called a siphon. I have a yellow plastic one. Works as explained above by Venturi effect. Same as a carburetor.

jimthej wrote:It's called a siphon. I have a yellow plastic one. Works as explained above by Venturi effect. Same as a carburetor.

FWIW, A siphon 'works' by differing air pressures, and requires no external force(flowing fluid).


Air is a fluid!;)

[quote="JPG40504"]FWIW, A siphon 'works' by differing air pressures, and requires no external force(flowing fluid).


Air is a fluid!]




When I was young my paternal grandmother bought a couple of houses in town. Like many houses from the early1900's here the basement was dug some years after the houses were built. The one she lived in had a basement shower in it. (I like basement showers, splash all you want, no scrubbing up after ) It had one of these units, all brass, and plumbed into iron pipe. The floor of the shower was like a shallow sump and the "jet pump" unit sat in a little depression at the lowest point. You turned on the water valve to the jet unit first then turned on the hot and cold water for the shower. When you were finished you shut off the shower first then a half minute later you could shut off the jet valve.
These work exactly like a jet water pump (deep or shallow) except they used existing water pressure (city water in her case) instead of an electric pump. In her house the sewer drain line was about 2' higher than the basement floor since it was there before the basement. As I recall her old Maytag wringer washer drained into the same sump and she opened the jet valve for that too.


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You can get them at swiming pool stores. They are used to drain water off of the winter cover when opening the pool.

Normally called an eductor.

foxtrapper wrote:Normally called an eductor.

Thank You!

Been struggling trying to come up with a description that distinguishes it from a siphon!

Never encountered that term before.

Neither has my spell checker!

JPG40504 wrote:Thank You!

Been struggling trying to come up with a description that distinguishes it from a siphon!

Never encountered that term before.

Neither has my spell checker!

Perhaps this will help:
http://en.wikipedia.org/wiki/Injector