Check out this one, test a pumper on site once a year and use the same divice to train pump operators anytime!!!

No heat problem when used wth a 2000 gallon folding tank, no airation problem, clean water no damage to pump impeller, safe operation, do an in service pump test at your station. Don't take it to the lake or river, don't risk getting stuck (have a cook out, eat and watch the pump "enjoy the day")

Train anytime using the device at your station simulate two 1-3/4" lines and one 3" line flowing 650 GPM check operation of relief valve. Open an close the valves give the relief system a work out. No nozzleman to worry about. Give the operator the hose length and have them calculate the friction loss, set the pressures and the relief valve .

We looked at the $80,000 trailers and this divice is just under $10,000. no storage problem, push it into the corner or use the 1/2 ton P/U to take it to another location.

Check out the photos on my page.