Was thinking today while on a job where I needed a stronger SH mix than normal through traditional DS. Of course 12v, xjet or evening pump up would suffice but I was wondering what if you rigged up multiple DS injectors? It might work in direct tandem but if not, what if you ran 6-9” of hose between each injector? Would it only pull from one or would it pull from all increasing you chem % ? Anyone already try any of this?
Only one, unless you have a duel barb
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I got a dual Barb and it really only pulls about 33% more. So for SH that goes from 1% hitting the surface to 1.3%. Not much of a difference. I was needing 4-5% today and I have the 12 v but the way the job was laid out multiple hoses would be a nightmare so I was xjetting which sucks carrying around a bucket then go back to refill, walk back to clean site, blah blah blah. Just wondering if multiple dsi connected either in tandem or if needed having some space between could get me to 4-5% while still DS?
I get what your saying more injectors more sh. It doesn’t quite work like that. It would however be a game changer if it did. With the job your doing I guess it just is what it is, reposition and get er done.
I’ve got a job coming up where a 12v won’t work and I want a stronger mix. I’m going to start messing around with a booster pump and force feeding the injector. There have been others who have had decent luck with that and getting pretty high percentages.
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DS injectors have a pressure-producing orifice inside of them. Putting one in front of another would have the same effect as using a high pressure rinse tip. It would stop the first injector in line from pulling chems.
You can use a 12v pump to force feed your injector. 1-2 gpm pump should be sufficient. From my understanding, it should at least double your draw rate. Make sure and use hose clamps, and it may also be beneficial to upgrade your soap line to 3/8”.
Has anyone actually done this on here and tested it with any usable information? Numbers etc
Didn’t someone use one on either end of the hose and found it worked?
My 8gpm could use a little more oomph to be honest.
Find yourself a used $100 crapper machine and upstream the sucker with some hot mix. If you can get 4 jobs out of it it’s worth while.
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You mean like one injector at the machine, and one right before the gun? That would kinda defeat the purpose of downstreaming, no?
Theoretically I suppose you could use an undersized injector followed by a regular sized injector. It would create a cascading pressure drop from one injector to the next. But I would be surprised if you could pull more than the extra 33% that a dual barb injector is supposed to be able to pull. And your flow would likely suffer from all the extra back pressure.
I think force-feeding is the best option if you’re trying to avoid the xjet pail or another hose for a 12v system.
There was a thread on this device here. No way does it pull 80% but I’d sure love to test what it does pull.
For $160 it better pull chem like no other but I do think you should try it first and see if it works ya know for betterment of the community
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$50 bucks in parts, at the most there. Should be fairly easy to piece together yourself.
(Edit: Dultmeier has that check valve for ~$18. Most people have a few old injectors with a blown spring/ball/o-ring. Add a stainless 1/4” mpt x 1/8” mpt adapter nipple for ~$1, and you’ve got yourself a super duper hi draw injector for around $20. Just sayin’)
I could see the advantage to using one of these to force feed with a 12v, because the spring and ball do create some flow restriction.
Without any force feed, I could see getting maybe a 20-50% improvement in draw rate. So on the right setup maybe a 25% max draw.
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I’d rather just use the 12v with a proportioner system to apply that strength instead of forcing it through an injector
