Seattle Pacific University – Alternative Engineering Class – Test site near Fall City, WA. Testing Hydraulic Ram Pumps made by students. Creek had plenty of head and flow for test site. +50gpm and 13′ water was pumped up hill ~80 vertical feet through 200′ of 1/2″ pipe. Collection into 55 gallon “food grade” barrel via several 1″ pipes. Drive pipe is 2″ PVC and also 1″ Black Poly. It was heavy duty poly.
Free Manual Here – http://www.inthefieldministries.org/jscalhou/Home%20Built%20Hydraulic%20Ram%20Pumps.pdf