Injector with check valve

lol…thats funny

I hear you, been using this 100% for the last few months and it’s awesome. Cheap to build too

It seems the only way to get a 1% downstream strength with a 8 gpm without restricting flow is either a $160 check valve injector, Dultmeier injector with a fragile plastic nipple, or force more liquid in via pump… any other options?

Send the grump some flowers and he might send you a SS barb for the dultimeyer injector.

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That diy xjet I linked above pulls way more because the injector is so close to the gun. I bet you get at least 1% on a 8 gpm. I have a 4 gpm and basically have to water down my mix by half.

The check valve injector went today. It started acting up on my last job yesterday and was barely pulling SH. Same thing @Atlas1 said. I could easily blow air through it. I guess the check valve is the problem. It didn’t last 10 jobs.

There is nothing new under the sun, just fancy wrappings by vendors

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I was sold by fancy promises and wishing there was something better. I hate dealing with injectors.

Good to know, thanks. I have the stainless GP, working well so far. Per @Innocentbystander I just left the proportioner out and seems to draw quite well.

Man, I hate that Bob shut down ptstate. Those were good times

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There was some good info on there too

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@Racer are you still using the check valve ?? Been reading up on it ! On a 4gpm with 20% more draw could get roughly close to a 3% mix being able to cut the sh down would be awesome !!

I don’t think this is the case. How did you arrive at that figure?

Says a 20% higher draw rate… if I’m already at a 10% draw rate would that not put it at 30%? Or 20% total draw rate ?

I fixed it for you.

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Yeah idk now that I’m thinking 20% more than the 10:1 draw rate not a flat out 20% added to the 10% I see where I went wrong. That makes alot more sense I thought that was way high as well but the way I was doing the math it made sense lmfao…

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@GrimetoShinePW One thing I’ve learned on this forum is that most of us bleach slingers aren’t very good at math. lol

I’m still trying to convince people that a draw rate of 10:1 of 12.5% SH is NOT 1.25%. But it seems I have as good a chance of doing that as @Nickski does of convincing us his set-up is as efficient as most of ours (all love to you, Nick :facepunch:).

But no worries, my man! Keep on learning!

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I am one who thought 10:1 was roughly 1.25 lmao oh well I know it’s at least 1 and I normally cut my SH a little anyway before d/s and still works fine so I’m not hung up on exact numbers lmao !!! If it does its job I figure it’s what I need.

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More efficient! And I’m 19:1 for house washing lol

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Nice thread here! So, isn’t the ball & spring in the DS injector essentially a check valve? It looks like the one @Racer bought above has simply replaced those parts with a different, much fancier, stainless steel check valve with a 1 psi cracking pressure. So why would it have a higher draw rate? Lower cracking pressure? Makes sense to me! I had a very fresh DS injector crap out on me Monday (luckily I had a back up on board) & I’m tired of it. I believe I’m going to disassemble it & remove the ball & spring & add a 1/4 inch poly / viton check valve in line with a 1/3 psi cracking pressure that I’ve spotted for cheap just to see what happens. Has anyone tried this?