Hello, I am Buying a trailer pump and i was wounder if i need a 4inch line to pump 3/4 mix in new jersey. Everyone I talk to out of nj say they use 3inch but in NJ they all say 4inch why is that. Thank you,

sandsandand more sand.washed concrete sand, next to cement, is the KEY ingredient in successful concrete pumping. And ALL the guys running line pumps in NJ use 4 pipe and hose to pump big rock pump mixes.steveph 800/421-1244 ext 214

I have been pumping in PA/NJ for 19 yrs. Most RMX Materials are crushed stone; some used manufactured sand. We have had no luck using 3 line for 3/4 Rock. I would highly reccomend using 4 for 3/4.Our rule of thumb is:Sand; Cement use 21/2 minus use 33/4 use 4