Mister system

[chessie4905]

Mister systems...... would appreciate users inputs on their mister systems and what ? how they are constructed. Pump, lines, nozzles, experience with them, etc.
I want to build a system and looking for current info. I've read older posts in past.

[lvmci]

Hi Chessie, I have a Manifold, water system manifold which has the ability to shut off each line independently, I ran a line with PEX tubing to a kit from Home Depot that included pre set up misters that I could hook up to PVC pipe I have my water pump connected to a Fry's Electronics fob on off system with all of the faucets shut off, and the manifold to the misters turned on when I get to Baker grade or to Cajon Pass or any other large Hill I turn the fob on from the driver seat and off at the top of the hill works well I'm putting a filtering system to clean the water up some because Las Vegas water is very mineralized, lvmc...

[Lin]

Two mister threads going at the same time!

I installed a system several years back.  It is not really misting, it is spraying water on the radiators.  I drilled holes (maybe 1/16", but I don't remember for sure) in some PVC pipe and positioned the spray to hit the radiators.  The system is supplied by my fresh water tank, so it merely requires the water pump being on.  It works very well decreasing the temp on hills.  Knowing that when I used the system I would likely forget that it was on, I used a 15 minute timer on the dash instead of a switch.

I know that using house water could create a mineral problem for the radiators, so I have been using swamp cooler coil cleaner on them periodically.  So far it seems okay.  Also, I have had to clean out the sprayer holes once or twice.

[chessie4905]

Should this be added to system?
https://www.amazon.com/Orbit-10109W-Misting-Calcium-Inhibitor/dp/B003OWLK5U/ref=pd_sbs_86_3?_encoding=UTF8&pd_rd_i=B003OWLK5U&pd_rd_r=758KWF6H6MFWEAZ4DYCG&pd_rd_w=ZR6Xk&pd_rd_wg=LhYtk&psc=1&refRID=758KWF6H6MFWEAZ4DYCG&dpID=413Nr7tDS8L&preST=_SY300_QL70_&dpSrc=detail

[chessie4905]

Any thoughts on using this system with a sureflo pump of its own?

https://www.amazon.com/HomeNote-Outdoor-Greenhouse-Trampoline-waterpark/dp/B07B4S5R74

[Iceni John]

Any thoughts on using this system with a sureflo pump of its own?

https://www.amazon.com/HomeNote-Outdoor-Greenhouse-Trampoline-waterpark/dp/B07B4S5R74

What is the orifice size?   The nozzles have a 3 stamped on them  -  does that mean 0.3 MM (the same as my 0.012" nozzles that are rated at 0.5 GPH each), or something else?   It's good to know that they Does Not Flyed Out!

Just bear in mind that any pump with a pressure switch may run into the same issue as I had, with it hunting on and off due to the low flow rate.   Either you will need to make a bypass like I did to keep the pressure just below the switch's cutoff pressure, or you can buy some versions of SHURflo pumps with a bypass instead of a switch.   The 8000-series pumps are for industrial and commercial use and can run continuously, but the smaller 2088 pumps are for intermittent use only.

John

[Lin]

The filter may be good.  It seems to have good reviews. 

The mister hose is over 26 feet long and has nine misters meaning that there is only one nozzle per three feet.  Anyway, that type of setup is really for misting-- dispersing almost atomized water that lowers the air temperature by quickly evaporating.  I am not sure that that is the best method to use for cooling a large radiator with a huge volume of air passing through it.  I think we need a lot more water than that.

[chessie4905]

It appears to be a length of tubing and several nozzles. You can use only the tubing you need and space the number of nozzles as you desire. Since they are brass, they should be able to be drilled out as necessary. The system we use should be called sprayers, not misters. As far as dealing with pump turning cycling,you could tee in a return line to tank to bypass enough water to allow pump to run continually when activated and still allow proper pressure.

[Iceni John]

The body of each nozzle is brass with a 10-24 UNC thread, but the actual core is stainless steel.   It could be tricky to accurately drill them out to a slightly larger diameter (you'd need some very sharp numbered drill bits and a good drill press), but nozzles are also available in many different orifice diameters.

For the bypass I used a 3/8" ball valve that is set at about a third open, and this produces the maximum pressure without the cutoff switch shutting it off.   I originally used a 1/4" needle valve, but it didn't flow enough to be useful.

John

[eagle19952]

maybe a grocery store/vegetable produce manager has nozzles that will work well.

[chessie4905]

Some of the grocery store nozzles may be some type of plastic. The stainless steel core should drill out ok with titanium or carbide drill bit. Nozzles with that mounting thread may be available with larger orifices, although I have the drill press and it shouldn't be a problem.
I wonder if adding some rv antifreeze would be in order in cold weather to protect system. You wouldn't need to operate it then.

[TomC]

I originally bought a 15 mister kit from Home depot and installed it in front of the radiator. While it worked alright, still had to pull over at times to let it cool down. Then I drilled out two of the misters with a 1/16" and now it works great! Will pull down the temp even when pulling a grade over a 100 degrees. I tapped into my normal plumbing using my fresh water system and just bought a 12v solenoid water valve. I hooked it into the old wiring from the emergency shut off (that was taken out after converting to turbo engine) and used the emergency shut off switch on the dash for my misters.

[Dave5Cs]

Use 1/2" pex in a square around the size of the face of Radiators. One down the center. drill 4 holes on the uprights evenly spaced and 2 on the top and bottom cross pieces. One small piece hooked to the top of the square by inserting a tee. then the short piece from each side connected to one tee, from that tee back to a shutoff solenoid 12 volt with and on/ off switch at the dash. from the solenoid the pipe hooks into another tee just outside the pump for the regular water supply system from the fresh tank. I do have a calcium filter in there also as well as a second water pump that will only come on when that switch is flipped with its own pressure switch on the pump. That way it keeps the regular system separate from the mister system. After I drill the holes just a little smaller than the .012 misters I bought on amazon I just screwed them into the pex pipe and it works well. At first I just used the hole instead of the misters but it just steam cleaned the engine and didn't drop the heat and it emptied the water tank pretty fast 45 gallons. So the misters are just enough to cool it down if needed. But we really don't have an over heat problem just did it in case its needed ever.

[Lin]

By the way,irrigation solenoid valves at Home Depot are 24v.

[luvrbus]

On a misting system high pressure is the key or you are just spraying water. At the restaurants our systems are a 1000 psi if not the customers would need rain coats.At least go with a 150 psi you can buy the Aquatec 8800 pump in 12/24 volts ($125.00) even 150 psi with the right nozzles would save a lot of water and do a better misting job IMO