I've been reading the concrete pumping mags. and saw a ad for go devils and how great they work. I was just wondering if they were worth it?

sponges work well if u suck em back slow on big booms use 2

go devils or "bullets" clean pipe better than anything that i hav ever seen. it is all we use on the highrise. works great with compressed air.

I have seen a soft orange sponge go thru a 1 inch piece of Plywood on a high rise---I bet Tom still has it Ricky ask him about that one. Imagine is that was you or someone else nasty thought

Godevils work great no guesswork if it comes back its clean

The Go Devils vs. the Sponge Balls... Man I thought this was some sort of pumping sporting event. Ha Ha!

Depends on if you're sucking or blowing? If you plan on sucking back a go-devil you better have good gaskets and wet mud and you also run the risk of chopping the investment in half (literally) If you plan to blow out with a go-devil get a pig-catcher so you dont have to dig through the concrete to rescue your go-devil.

I like using one sponge ball + 5 gallons of water + another sponge ball. I have a 30" blow-out cap (pipe) that I can pre-load for blow down. Ball-water-ball, clamp it up and air on.... clean system. Just dont let my balls hit you in the chin when I blow-out!   (Yes I'm a dirty Bastard)

Beware of  "single cell" foam or sponge material that air blows right through. I check every new sponge I get by trying to blow air through it, if I can its garbage and wont suck back or blow out!!! 

I think go devile work great for blowing down but round ball sponge or square sponge for sucking back all the way. I also agree bigger booms pull 2 back with water in between.

Hey TT: With a s*** sponge I make a finger size hole and put dishwashing soap in it. Soak it in a bucket of water and squeeze it before using it. Works great and easy to clean!