Since I don’t use it and never will, would I get more flow of I remove this injector, or is it not even worth messing with? It’s on a 4/4200 machine.
Do you use a different injector further down the line? Or are you using pressure on the siding?
Short answer, yes it will help with flow. I had a similar machine when I started and removed the internal orifice.
Neither, I use a 12v downstream system for siding and pretreating concrete. I don’t use a pressure washer at all on siding.
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Was it noticeable?
Right on. I have a noticeable increase in flow when I bypass my injector, so I assume you would as well. Nothing to lose by trying
Thanks, I’ll be taking it off then.
Run a bucket test first, then do another one after it’s off. Someone will come to this forum in the future with the same question, and your results will help them
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So I finally got around to pulling it off. I can’t remove it completely because it’s a special fitting on the pump end, fine threads and o-ring seal. I did remove the screw in orifice in it though. It necks down pretty small, about the same size hole as my #8 1000 psi tips. I haven’t tested it yet, but I have to imagine removing that will help get even more flow.
There is a check valve inside as well. I assume that’s only there so when it’s shut off chemicals can’t get back into your pump? I just took it out too since I won’t be using the injector. That’s fine to remove that too and just gut the whole injector right?
I found the correct fitting for a cat 67dx pump. The part number is 126974. Its a replacement for the injector (part number 7367). Don’t remove the check valve parts (see 471 in the diagram).
Hi. Sorry for reviving an old thread but I just bought a Simpson with a cat pump. I want to use downstream injection but all I see is to not use the integrated one.
I went to cat pumps page and cannot find the block off fitting.
Or, can I just put a rubber cap on it and use the added injection port?
I don’t think a cap is necessary. I have a 4 gpm with a CAT pump and have been using it for 6 years now and never once used the injector that came on it.
I do plan on using an injection port after the pump for soft washing, just not the one that is fixed in place. I guess I worry about drawing air in the fixed one, preventing suction on other
Thank you!
When I have plugged them in the past I just use a machine screw and some loctite and thread it into the orifice.
