Had kind of a brainstorm on the way to a job this morning, and curious if anyone has tried anything like this:
Install an oversized ds injector downstream of the regular injector. Set it up to have a few different detergents/solutions in small batches gravity fed through metering valves.
The spring would have to be removed a la Bob’s modded injectors because the injector won’t be pulling enough of a vacuum to pull soap with it there.
My reason for this hairbrained idea is that, as much as I love my stainless proportioning injector, I’m sort of restricted as to how much surfactant is in my mix. If I want to mix up a batch of building wash solution with some butyl or caustic degreaser to cut the road grime I’m a bit stuck, as well.
I think it’d be kind of cool to be able to tweak my solution on the fly for each scenario. But I know this is overcomplicating things