Chem Injectors

Patricio

Patricio

New member
Are chem injectors way off from what they are rated or do I not get it?
If I have a chemical injector that claims 30% draw (its actually 33% but I like to keep it simple)
Can I expect that for every 5 gallons of liquid that come out the end of my lance that a gallon and a half of it would be whatever my injector is drawing?

I find this to be far from the case. I always figured my 10% injector hardly pulled anything. Now on a different machine my 30% injector definitely pulls more but not anywhere near 30%

Maybe I don't get it.

Thanks
Pat L
 
Just like they say, you can't believe everything you see printed or on the internet, there is a lot of exaggeration and sometimes outright lies.

Get a measuring pitcher and time how much it pulls in a minute so you know exactly it pulls.

Depending on the nozzle you use, that will affect the ratio of what the injector will pull.

Once you know how many ounces it pulls in a minute, do the math and divide it and see what it pulls.
 
injectors are matched to a "range of flow"..
beyond those flows it won't work at all,
or you constrict the flow so much, you loose working pressure when you put the HP nozzle in the wand.

standard injectors draw 1:10, there are also 1:5's
who makes a 1:3 ?
 
http://www.envirospec.com/ecatalog/Injectors.htm
I got the furthest one on the right that is pictured with the tube. I actually ordered two. the 2-5 gpm and the 5-8 gpm. My PW is 5.5 and I have 150' of hose. Not sure if one would work better than the other. I like the injectors. I would say good quality.

However the foamer I purchased from them. Not so impressed. I have a nozzle that works just as well in many situations. Still, I may use it from time to time
 
I'm glad you mentioned the hose-length..
in the other thread on limited pressure I mentioned this..
REMOVE the injector when you go to HP from soaping.. the injector that works on 150ft hose is restricting flow momre than you want it to.
Or, settle for the ST-62.. it has a variable venturi ..so you can "open it up" when you're not using it.. that allows full flow with MUCH less restriction.
..and when you mention "quality"..
that reminds me.. stick with stainless oriface versions for longevity.
 
I only use the fixed (non adjustable) General Pump 20% brass injectors with the stainless orifice. There may be a better one, but I just dillute my soap (will take a lil trial and error to figure out for what you are doing) for the whatever particular job I am doing. I have found those to be the most dependable injectors out of the ones I have tried. I even tried the stainless 20% ones from GP but have never got one that worked at all from new (bought 2, 2 diff. times). We usually can get several months out of the brass ones and they are pretty cheap compared to how long they last. You can also get rebuild kits for them, but they don't seem to work near as long after rebuilt.

I haven't tested to see if it is actually 20% (1 to 5) but I would say they are close. On my 5 gpm machines I would say they are a good 20% with up to 150' of hose, but closer to 15% on my 8 gpm machines.
 
Stay away from the adjustable injectors, they will not pull as much when wide open as a regular injector.

I stick with the Super Suds Sucker or General Hi Draw.

With the orifice smaller than your machine size it will help pull a stronger ratio than the injector that is sized to your machine.

The Super Suds Sucker does help when running long hoses like up to 500'.

I have had luck with the General Hi Draw pulling chemicals up to and over 250' but there are a lot of factors involved, if you want to be safe, get the Super Suds Sucker and some rebuild kits. They come with different orifices so you pick the size you want for your machine, larger or smaller.
 
Cooper said:
I only use the fixed (non adjustable) General Pump 20% brass injectors with the stainless orifice. There may be a better one, but I just dillute my soap (will take a lil trial and error to figure out for what you are doing) for the whatever particular job I am doing. I have found those to be the most dependable injectors out of the ones I have tried. I even tried the stainless 20% ones from GP but have never got one that worked at all from new (bought 2, 2 diff. times). We usually can get several months out of the brass ones and they are pretty cheap compared to how long they last. You can also get rebuild kits for them, but they don't seem to work near as long after rebuilt.

I haven't tested to see if it is actually 20% (1 to 5) but I would say they are close. On my 5 gpm machines I would say they are a good 20% with up to 150' of hose, but closer to 15% on my 8 gpm machines.
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Good post David, I agree completely....And with what Chris said about adjustable injectors, I'll never make that mistakes again.

Go ahead and send the 5-8 gpm injector back, I'm pretty sure it won't draw with 150' of hose. We run 8 gpm units and use the 3-5 gpm Hi-Draw injectors from General, running 200' of hose. Why use 3-5 injectors and not the 5-8?....5-8 injectors will not pull chems with 200' of hose.

Injector, nozzle size, hose length, injector placement, and probably sea level affect chem. draw.

Also, if you check psi at the gun with an injector in line, you will have about a 500 psi drop in psi. Chem. injector and hose length will be the factor.
 
Interesting. My first instinct was to pull out the injector when not in use.
So here is a thought. Would it be a good idea to do this.

At the end of my 150' hose which comes off the real. I could put the injector on the hose and add a 35' hose to that. This way the injector is feeding into 35' of hose rather than 150'. In practice maybe not worth it. Just thinkin
 
We have tried all kinds of injectors over the years and my guys still like using The X-Jet system. They last all year without having to rebuild them. You put chemicals were you need them and dont have to waste time waiting for chems to clear the lines. They just like them better. On occasion we will still use our Super Suds Suckers.
 
innovativewash said:
We have tried all kinds of injectors over the years and my guys still like using The X-Jet system. They last all year without having to rebuild them. You put chemicals were you need them and dont have to waste time waiting for chems to clear the lines. They just like them better. On occasion we will still use our Super Suds Suckers.
Click to expand...

+1
I love my xjet. It has never failed me.
 
I have used a lot of different injectors and now I only use the Super Suds Sucker from Espec (using the 5-6 gpm oriface for my 5.5 gpm unit). For me, it pulls better than anything I have used. I also stay away from the adjustable kind. Almost all of my jobs I use 200' of hose with sometimes 300' to get to the backsides of larger condo buildings.
 
Ron Musgraves said:
Have you ever triped on the bucket?
Click to expand...

Nope. Only a fool would draw out of a bucket Ron. I use an enclosed pail on a two wheeler and shoot through a trigger assembly without a lance. I prefer that to DS. If the 2 wheeler gets turned over I simply pick it up and move on, with no spills.
Never tripped on a bucket.

Plenty of threads on the two over the years. Just my preference. It doesn't make me wrong or you right. It's all about preference to the user I.M.O.
 
Ron Musgraves said:
I have never had problems with my injectors, get electric if you have too. Carrying buckets around the work place just seem not good. Especially when you have employees
Click to expand...

nice jab Ron. I'm good to go with what works for me. it's not for everyone.
 
The M-5 X-Jet is the best, that said we don't use them washing houses, too much pressure. We market "Low Pressure House Washing" to me low pressure is anything below 500 psi. With the M-5 (Even with low gpm machines) output psi is still 1500-2000 psi, this IMHO is not "Low Pressure Washing" and can be just as damaging in the wrong hands as a "Red Tip". Again, just my opinion.

I say, use whatever puts money in the bank.
 
Thanks Guy,
I have a tip for my gun. Not sure what it is but it has a big round hole. I think it's purple. Anyway it's a soap nozzle but for shooting up high. I can reach a 2 story with it no problem. I hardly would consider it high pressure. Although if I am working down low I stand way back or switch to the 40º. I am wondering what your thoughts are on this. What do you do with your low pressure to get the chems on? I use the two tips I mentioned and that's it.
Thanks
PL
 
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