I wouldn’t worry about it being too powerful. A lot of use 7 gpm without any issues. There are just times where less flow would be kind of nice but it’s not really a necessity. With a 5.5 gpm there are probably times where more flow would be nice. For example I think for me less flow would be nice like when a tree is hanging over a roof just above the shingles and I want to try and keep any mix from splattering on the leaves or maybe a narrow sidewalk where I want to try and keep it from splattering on a nice lawn.
The 7 gpm will work fine. You always want a backup so you could order a 5.5 gpm too. You can then use either one depending on the job.
Turns out the 5.3 60 psi 12v I already have to force feed the injector would work. Just would have a hard time spraying all the way up the roof from the gutter. The more I think about 12v real softwashing I’m getting stoked about it. Didn’t realize how much flexibility it will offer.
Going to give force feeding the injector this week. Got it setup yesterday haven’t had time to test it out yet. Got two colleges to do this week both are pretty bad in some spots. Going to give it a shot instead of dragging two hoses.
@Grizz that 2.2 that you got that’s missing the barbs are they the quick connect kind I had one and could never get it to stop leaking at the connection I even tried the tsc version they leaked less still a problem i ended up tossing it in the trash
It definitely works! I will try to do the test today or tomorrow to see how much mix it pulls with my 5.3gpm pump. I know it’s a lot more than without. When I first started I would make up 5 gallon buckets of mix (straight sh with surfactant and degreaser, no water) and it would last seemingly 3x longer with the pump off. I remember putting the pump in and using on a stone patio and the 5 gal draining in like 3-4 minutes using a 5gpm machine with the 3-5 gpm nozzle. If you have time to test it to see how much comes out (x amount of gallons of mix and x amount of water) please post your results!
What about using a ball valve to reduce the flow when needed? I am getting my system today so obviously haven’t tried it yet. If it did work to slow it down would it cause damage or stress on the pump?
@Seandz The pump I put on is a 3 GPM I had laying around the shop. I’m thinking a 1 GPM would be plenty enough for what I want it for. If it uses as munch sh as u say. Will try it out tommorow. The filter brackets from pressure Tek the holes line up perfect to mount a 12 volt pump to.
I don’t know that it makes much difference In gpm on the pump. Need to consider its just a 1/4” line plus it can only exit into a crowded 3/8” line that is already force fed with water from the pressure pump. Definitely more than just Venturi but a 3gpm or 20gpm pump would only get so much thru.
Tried it out today no dice. It lightened it up some but didn’t clean it after two passes with it. Air diaphragm 3% it took it right off. Seen a 1.5gpm and 150 psi pump. Would be about 100 more psi maybe that would get the job done? Reckon I will keep doing it with air and an extra hose.
@Harold I had a 3/8 draw tube and I changed the orfice from a 2.3 to a 2.1. It lightened it up some was right on the verge of working. Going to order the 1.5 GPM 150 psi pump. Will let you know how it works out if that pump makes a big difference. And get the fittings for 3/8 to injector and use my spare injector when using the pump. I use a 2.3 orfice for everything else.
