has anyone pumped straight down a mine shaft using 1000 feet of hard line, then a 90, then 800 feet of line?

This type of system is standard practice for paste back fill or stabilization of the site.  Our Ultra 600 abrasion resistant pipe is a perfect fit for this.  Please give me a call and we can discuss this further.   262-284-7812  Joe   Ultra Tech Pipe/ Construction Forms

pumped down 350 ft then 100 ft out its fine till you stop then there is this awful suction going on and after cleaning out around the rockvalve twice i realized you must pump the hopper all the way down if you must stop oh and we filled the line with water to the 90 to catch the grout

No. But I sure would like to be there when you're gona do that!!!

yes i have several times 1000 t0 1400 feet down and then went 1200 to 2500 feet out. call me i will give you some pointers. 813-334-5552