DRY TIME?

Jackblack:  Good question.  When I am training someone tm or portable I want to overlap by a half with wand and a minimum of TWO EXTRACTION PASSES FOR EACH PRESSURE ON PASS.   But that is just my way. But each extraction pass will remove more moisture.  But I feel two is plenty,  but if it is an 60oz carpet 3 or 4 maybe necessary.  That one extra pass could cut a half hour off drying times which makes you look better as drying times seem more important than cleaning results on some occasions.

jackblack

If your porty is a 500psi Ninja and you are looking for faster cleaning and quicker drying times you should look at the Hyper Box. We sell for $799. This is an additional 2 vac motors that will take your lift from 140 to 260. Now you will have almost truckmount capabilities.

The other alternative is to add a portable hotbox that takes your temperature from tap temp to 205º F. This will allow much faster drying times through quick evaporation.

Your idea of a double pass will also double your labor costs. Also keep tuned for a new style wand taht will be first introduced on this site. It will allow single pass cleaning through its advanced spray design. I just love new gizmos especially ones that allow faster cleaning and additional profit.

P.S.
Everyone says tap temp is enough. Try cleaning from 180º F to 205º F and you will never go back.

Sorry I don't have the technical answer you are looking for. I am a salesman and only focus on sales ideas that work for my customers. My technical knowledge is vast but makes no money.