Air Gap Location

[PlumbIt]

I have a left/rear offset disposal with DW to the left of the sink. Drain in wall at center of cabinet. The Insikerater has the DW and Drain inlet and outlet on the same side. So If I rotate it to face drain, my DW inlet also faces drain toward center of cabinet. Where do I put the air gap? Left or right. At left the air gap outlet (disposal inlet) hose will have to snake around the disposal (solid line). Air gap on far right the DW drain will have to traverse the entire rear of the cabinet (36"; dashed lines).

 

[pipo816]

I believe I have a situation with my drain pipe for my softener. The installer didn’t connect an air gap valve. I don’t see how can I install it due ti the location of the sewer pipe. Does anyone have any suggestions?