Who uses a prima-port?

I used to mix the prime in the hopper with the S tube shifting but now I use the priming port. Both methods work good I just prefer using the port now.

less waste of concrete    and less BS

The prime port is the safest way/Engineered that way  for a reason.

It's all philosophy of the manufacturer,some use,some don't.As being more schwing familiar I have not thought about using one,as with all things,trial and error.

we have them on all our pumps and have done both ways in the cold of the north think it is better faster and easier

Has anyone put a primeport on the reducer on a trailer pump? Terry

Is it a problem with hardened mix in port after pumping all day?

Short answer , no .

Prime port on a reducer of a trailerpump.. Sounds good but the reducer would have to stand a bit upwards otherwize the water just runs in to the pipes??

On a trailer pump angle the reducer down and let your prime run into the first pipe or hose. Have a sponge or paper wad in the start of the 2nd pc. of pipe. I use betonite so I don't want it in the hopper. Once again I'm new to line pumping,only have Telebelt experience. Terry