Lori helped me with mine and it is awsome. I did my first roof (tiles) and the customer is super happy with the results.
I've Delavan 5850 with a 1" suction lines and a 5/8 discharge hose with a 3/4 ball valve. I bought the tri-banger but did not use it on this job. I found a smaller nozzle and it works perfect for me. I used about 60gls of 50/50 mix for an aprox 4000sqft home.