Tech question - Contractor Talk - Professional Construction and Remodeling Forum

painterman · 04-30-2009, 06:52 PM

I keep reading about using a "down stream injector" Can one of you pressure washing pros explain to me what that is and what it looks like.

Thanks

mhillc · 04-30-2009, 06:55 PM

Quote:

Originally Posted by painterman

I keep reading about using a "down stream injector" Can one of you pressure washing pros explain to me what that is and what it looks like.

Thanks

You know an injector that goes down stream

painterman · 05-01-2009, 06:32 AM

Gee ...thanks...that was a great help

fireguy · 05-01-2009, 08:50 AM

The Grime Scene

ERAD_DIB · 05-01-2009, 07:16 PM

It goes "down stream" from the machine's pump, so whatever chemical (soap concentrate, etc.) it picks up doesn't pass through the pump. I think it might also be known as an eductor or syphon.
Hope this helps.

tom connelly · 05-20-2009, 12:08 AM

Downstream injectors are chemical injectors that syphon chemicals via the water pressure after the pump on your pressure washer. They are typically in-line and placed immediately after the pump with the pressure hoses attached directly to them. Some of the smaller units have them built into the head of the pump after the plungers. Most of these kinds of chemical injectors have a ratio of 15:1 or 20:1. However, Barrons does make a downstream injector that has a ratio of 10:1.

There are also acid injectors like the EC Jet from EaCo Chem. These are typically stainless steel (to aid in corrossion resistance against the acids) and are fitted onto the end of your wand or trigger with a 1/4 inch plug (quick connect). that way the acids dont have to travel through your hoses and fittings causing damage, and it has a higher ratio, typically of 4:1. Lower ratios are more frequently used with acids.. 4:1 being the most common.

tom connelly · 05-20-2009, 12:22 AM

If you are looking for an application method to apply straight chemicals like SafeRestore or any other restoration cleaner, EaCo Chem now has a new chemical injector that you hook up to a small air compressor, similar to the cobra system but more economical and just as durable, and it's better than the deckster. It has a great pump on it that should last a long time, and its only around $600. I've used it and was impressed. It really puts out the chemicals and works great. It's compact and easily adaptable to any job you are doing.

give them a call and ask to speak to Lynn or Mike about it. Tell them Tom told you to call them.
1-800-313-8505