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homebrew hydro update: coanda water intake - Page 4

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Posted by Bob F on February 23, 2009, 5:30 pm
z wrote:

I have seen one. It is a brass hose nozzle with a knurled knob near the end.
Turning the knob presses in on the sides of a rubber tube that goes down the
center. This restrict the size of the spray. I was introduced to this nozzle by
a friend who was out in the yard with the hose when I showed up. I was standing
there talking to him, and suddenly realized the front of my pants was getting
wet. He had been holding the nozzle with an almost invisable stream of water
directed at me and I didn't notice until he had gotten me.

I did buy one, and I will emeil you some pictures. The nozzle has a central
insert which is like a rubber tube and a hose washer all in one. The tube has
about a 3/16" ID. Three balls around the tube about 1/4" from the end are pushed
in by turning the knob, constricting the tube diameter. I'll try emailing you

Posted by Bob F on February 23, 2009, 5:41 pm
Bob F wrote:

Oops. Just noticed around the end of the nozzle. "SLIP-SEAL CO. Long Beach Ca."

Posted by Bob F on February 23, 2009, 5:43 pm
 Bob F wrote:


Posted by z on February 23, 2009, 5:52 pm

Oh man.. those look well worth the 16 bucks plus shipping (for 2).

I can't believe I've never seen those before.  My search skills must be
lacking.. they look like just what I need.

Thanks a lot.. i'm making the order now.

you don't know how many nozzle searches i've done and never hit that..



(see kids this another reason  why us old timers still use Usenet)  

Posted by Bob F on February 24, 2009, 1:22 am
 z wrote:

You never thought to search for "SLIP-SEAL"? Geeezzze.

Looking at the nozzles, I'm already thinking about how to use the concept to
make a better one for this purpose. Maybe a band, like a hose clamp, around the
rubber to maintain a more round nozzle. On this one, the 3 balls squeeze in
three lumps of the rubber. This will probably result in higher losses.

I hope these nozzles are big enough to give you the flow you need.

Just out of curiousity, what is your vertical drop from pickup to generator? I
thought it was 100 or 200 feet. Or was that the pipe length? 36 psi seems low.
Or, you really do need the bigger pipe to lessen losses.

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