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-   -   Need Help with Greenhouse Sprinkler System (http://www.tomatoville.com/showthread.php?t=47289)

rnewste April 16, 2018 06:31 PM

Need Help with Greenhouse Sprinkler System
 
I am having a difficult time finding a 1/2 inch overhead sprinkler that will spray a mist instead of droplets of water. Looking for heads that will cover a 20 foot diameter circle to dispense a fine mist pattern. If any of you have experience with such an emitter system, I would appreciate a link to such products.

Thanks in advance,

Raybo:)

Worth1 April 16, 2018 06:49 PM

Look here and see what they have.
You may need to get a drill and tap to connect then to 1/2 line.
Remember radius if 1/2 the diameter.so if you want a 20 diameter you will be looking for a 10 foot radius.

https://www.google.com/url?sa=t&rct=...iLjBfULqWtb--n

rnewste April 16, 2018 07:20 PM

Worth,

Thanks for the link. It looks like they only have foggers which will distribute over a 4 foot diameter pattern. I need something which will emit over a 20 foot diameter. Mini foggers won't work - need something more "industrial strength" to pump out a large mist pattern.

Raybo:)

Worth1 April 16, 2018 07:25 PM

Keep looking around the site I found one in there some place that would do 20 feet but cant find it again.:evil:
Worth

rnewste April 16, 2018 07:31 PM

Worth,

The only one I could find at this store is this one:

http://www.sprinklerwarehouse.com/Fo...07-054-b05.htm

I will keep looking, as you suggest.

Raybo:)

Worth1 April 16, 2018 07:38 PM

The one I saw was a mister I cant find anymore.
One thing is if you are looking for a true foggier it is going to be hard to push a fog that far.
The laws of physics are against you.
Can you not just put the heads closer together?
Add more pipe?

Worth

rnewste April 16, 2018 08:05 PM

Worth,

"Fogger" is probably the wrong phrase. We need to mist chilled water onto the plants from overhead without having to run hundreds of feet of parallel pipe - so the 10 foot radius (20 foot diameter) seemed to be the optimum design goal. We need "mist" - not large droplets of water landing on the plants. (I keep thinking of your fire suppression work you did up on the North Slope some years ago...)

Raybo:)

Worth1 April 16, 2018 08:15 PM

I will keep looking for you and see what I can cook up.

Worth

Salsacharley April 16, 2018 09:03 PM

Raybo, I hope you have "soft water". To maintain a mist with a 20' radius is a tall order in a sustained situation as minerals build up inside the emitters.

p.s. Why isn't Marnar world famous?

rnewste April 16, 2018 09:54 PM

Charley,

The system will be on City water, so particulate/mineral filtration should be fine.

Regarding MarNar, I just planted out a pair of MarNar F7s last week along with 22 other tomato plants (Dwarf Metallica, Dona, Goose Creek, Carmello, etc.)

Raybo:D

Cole_Robbie April 17, 2018 12:08 AM

Small particles of water are much more difficult to throw 20' through the air. Mist doesn't really move unless carried by air.

I don't know how small of a mist you need, but about 35 psi is required to make the smallest particle size of mist. A shallow well pump does the trick cheaply. But that mist would need a fan or some other force to move it around.

zeuspaul April 17, 2018 02:36 AM

Try putting spray nozzles in the search box at McMaster-Carr if this link doesn't work.

https://www.mcmaster.com/#spray-nozzles/=1cg4nss

sjamesNorway April 17, 2018 03:37 AM

This may be way off base, but I don't understand why you would want mist in your greenhouse, when high humidity creates fertile breeding grounds for all sorts of fungi. I use drip irrigation.

Just wondering...

Steve

Worth1 April 17, 2018 06:33 AM

Good lord I got lost in a bunch of technical information on misting nozzles I could look at for hours.:lol:

Google pictures of water misting in greenhouses or something.
In none of the pictures did I see anything 20 feet apart.

Not for sure what you want to do with the system or its purpose.



Worth

Worth1 April 17, 2018 06:47 AM

You might look into micro sprayers that may be what your wanting or could use.
They will put out the diameter you want.
I have used them before too.

One other thing you will want o go to with what they call head to head coverage for most things to get a full coverage.
This means you will still have to go to the heads being around ten feet apart or you will end up with dry spots.
I put my yard sprinklers in with head to head coverage.

With a mist system the stuff just sort of floats around before it hits the plants depending on how high up the heads are.
The water mist I used for fire protection was running off 2000 PSI air tanks.



http://www.sprinklerwarehouse.com/Mi...ers-s/7841.htm


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