How to inject in underbody wash

[Matfry]

Does anyone currently inject into underbody and how do you have it set up or is the only way to is using low pressure pump?
thank you for any input

 

[MEP001]

You can use a downstream injector but you lose about 20% of the pressure, otherwise you would have to introduce your chemical before the high pressure pump.

 

[Roz]

Or buy a Washworld as their controller allows you to inject a chemical into the undercarriage