I use to work construction, after all the pieces of equipment I jumped around on and operated, I ended up operating a concrete paving machine. I bring this up because as the concrete was laid in front of the machine it would run threw a series of concrete vibrators helping it to lay down better. Is there anything like that when concrete runs through pumps? (**I do remember a picture that was posted, not to long ago, someone out of the country where a man had a single hand held vibrator.)

Most pumps have them in or on the hopper it really helps with stiff mixes.

that is exactly what i am talking about my man. Man seeing those pictures reminds me again how much I hated that job. We would pave break down the machine, pave break down the machine...aww a nightmare