How many people run a 5 to 4in reducer on their truck all the time? and what is your prefrence on lenght of the reducer? I just bought a 36in and i think it works better than the 24in.

They say the longer the reducer the better, where I was working we always had the 36 inch. No one ever had problems that I knew of.

John,

I have made a lot of reducers (I was in the bizz’ for a time) and by far the most popular 5x4 was 36”. From personal experience and asking many pumpers your same question the most common thought is that if the material would not pass thru a 36” 5x4 it was time to put the 5” tip hose back on. ;~)

Or if the boom starts to bounce I go back to 5 inch hose

I've been using the 10' reducing tip hose,  kindof pricey, and hard to get use to cleaning out,  but real nice,   the finishers really notice a difference.

One more smart ConForm product ;~)

OFF TOPIC

I don't want to hi-jack your thread, but... why is the US so far behind the rest of the world with the "air cuff"-- stuff?

think of reducers like a freeway. the shorter the lane reduction from 5 lanes to 4 lanes the more jamed traffic is. the longer the reduction the less jams you will have..but also consider the amount of cars (rocks-rock size in your mix), the more cars or large vehicles the more jaming. this has really been the only way i have ever been able to explain it to a contractor when the reducer plugs, that it isn't the pump fault. however, when pump our very harsh mixes here, we never reduce, unless they wish to go to a sweeter mix.

I like to use a reducing hose, I almost always have a 5 to 3, Gets a nice steady stream and is easy to push around for your hose man, downfall is you cant pump with a high volume or you get some boom bounce and you have to break your hose off to clean out. Im not out to see how fast I can unload a truck like some guys, I get paid by the hour not by the yard, but if I need to get the mud down quicker I prefer a 36", Ive had less problems. I have a 5 to 4 reducing hose but most contractors dont like it cus its heavy. Just what I like. As for the air cuff, I rarley use mine because half the time I fight with it and it gets to be a pain. Ive had trouble with it not releasing. Id rather kink the hose with a strap if needed, maybe I gotta bad apple. But I would really consider getting a 5 to 3 reducing hose, they are great for ICF and almost all the contractors Ive poured for love it, but they cost a pretty penny like most everything these days.

I dont think there is any way i could have a 5 to a 3 tip hose. We pump 1in or bigger rock, nothing smaller than 1in. I just started using a 4in. single ended tip hose and it works great! If the guys complain about that being to heavy they need to get off the hose. most of my guys run the hose with one hand

I love my 3 1/2" til hose! Unless you get a really bony mix, it works well! Yea you have to take it off to clean(unless you water wash,then just slow down a little) but I take my hose off anyway! I run the volume up for a stroke or two to build some back pressure, then i just pump slow! Since my tip is 4 1\2 anyway,the reduction isn't bad

John I believe you will find the 36" 5x4 is the most common in use.I used to run a 4" or 3 1/2" tip on most residential work and majority commercial.There are indeed some states that 4" is suicidal (mixes).Common sense,job reqirements,size boom all play a big part.

john i had a form worker ask me for a smaller hose than 4" i told him to step off the wall walk over to his car get in and go to the nearest gym if he cant handle this one this is no place for girlymen

Sounds french to me, we supply our conc to our pumps, we do 12m to 110m resy foundations with 3" rubber,10' longs.

5-4 and 4-3 all the time. Comercial in our area is done 3.5 rubber 10' or 5" 10' rubber. Mixes must be weird to have a 10' steel hehe, thats all martian to us.

If I had a 300 to 3000m core footing it went through a 5" rubber off the boom, full volume no one on hose thanks. Vibrator men 20ft behind. We haul 10.5 to 11m in a mixer, our trailers haul 14m per. thats what 18yards pff I forgot yards.We always pump two at the pump. This is very common pumping in our area. I have never seen a longer steel taper.

5 TO 4 REDUCING HOSE THE MOST DANGEROUS TOOL USED IN CONCRETE PUMPING I'VE EVER SEEN.

Tell me about the danger. I am very interested.