Too Tall,

You wrote to me " This looks like a hill-billy rough neck hose no doubt constructed with hill-billy chrome(ductape!) "

I've got a collegue that bought an original rough neck hose. Second day he was using it, he got a plug, the pressure raised and the hose exploded...

Lukily nobody was near the hose but what would happen if you were guiding the hose?

Do you or anyone else has got any experience with the rough neck?

Does some tried the Steady hose from Putz?

im no fan of the ruffneck drop hoses.  if lines being redused, its with metal.

My collegue indead had this accident with extra pipe line.

Maybe it's only designed as an end hose.

But then why do they sell double ended rough neck hose if they can't withstand the pressure?

And after all, if it's used as an endhose and you have a plug, the pressure raises to the maximum as well.

Or do they sell it in different qualities with different maximum pressure?

By the way, saw your pictures with the 32-5 RZ. Amazing what you can do with that machine.

Kris Leers

As a group we don't have much use for the reducing hose.

I like your hillbilly fix........ on a one ended anti whip hose. Configured correctly; even if it plugs and detaches the hose will not whip.

The double ended hose version is a bad plan.

Bob,

I've got already a solution in my head where no metall at all is involved. Will work it out as soon as I got the time and post some pics.

I agree totally with your point of view on double ended hoses. We can't be carefull enough!

On the other hand, if the German association for safety has aproved the Pin Pour system from Putz, they must have tested it very well because I know those Germans are very strict on safety rules.

Even a single ended hose is still steel wire covered with rubber...

If the single ended hose gets blocked and the pressure releases with a power of 10 Ton, the impact will be very destructive as well.

Anyway, the safer the better. I will work on it till I find a solution that meets the requirements.

Bob, I think it's great what you and all the others do to make our industrie more safe. By sharing our experiences we can avoid a lot of damage and find solutions to problems related to concrete pumping.

;~)

Hey Kris, I meant no disrespect to hill-billys or rough necks. The first time I ever saw a ruff neck hose I thought they would be a problem. Not only reducing concrete in rubber but also putting it in the hands of the hose man? bad idea. Now that you've subtracted the metal end from the end of your hose...good idea. Consider this, avoid having to alter the hose end and cutting a grove. Add some small spikes or cleats to the interior radius of your attachment device that would puncture through the cone and >"grip"< the hose as it was tightened. You could  position them a bit downward for better hold. Also consider a safety seam or cut in the cone to tear easier incase of entrapped/compressed air, back pressure, plug & release etc. I still think hill-billy chrome works just fine?

Hi Too Tall,

Thanks for the advice.

Don't worry, I didn't take your reply as disrespectfull at all, I thought it was funny and I appreciate you share your point of view.

Too Tall, Is it your 60 meter Concord on your profile page?

Greetings from a rocking hill-billy. 

Yes, I have used the Steady Hose from Putz.
And it'¨s goooooood.
If you check out putz homepage, you'll find a video of it.
And it is exactly the same in real life.
I haven't studied it in detail, but believe it is
you normal rubber inner liner and some layers of composites liner over it.
Something like the carbon/kevlar lined hoses, but not as stiff.

There has been a lot off talk about the roughneck hose and its uses, benefits as well as its limitations. I would like to clear up some of the past months of discussion on this hose and its application. I have been involved with the use and application of the hose since its inception. Here are some of the facts:

The Ruff-neck reducing hose is not an anti-whip hose; it is a hose that was designed to be a safer alternative to the rams-horn, double 90º or any other steel decelerator used and sometimes required on jobsites where air entrainment control is regulated.

The Roughneck reducing hoses, and all other hoses in our industry, are embossed with the working pressure as well as the total weight full of concrete. The typical working pressure on Conforms boom hoses is 85 bar. The Ruff-neck hose is no different.

The main reason for Conforms not going with a double ended reducing hose is the chance that the hose may wind up in a lay down application as a reducer behind a trailer pump.

If you have any questions concerns or application questions feel free to contact me at Conforms anytime.

John Schantz

johsch@conforms.com

Hello John,

My collegue who had this problem bought the reducing hose from a local suplier who bought it from conforms and this hose was double ended.

Maybe the local suplier put an extra collar on it?

But what I still don't understand is that if it's made for 85 bar then how is it possible that it bursts on the second day it's been used on a boom pump that can build up a maximum pressure of 72 bar on the concrete?

 how is it possible that it bursts on the second day

It is a device built by man and thus subject to the occasional failure.

I have yet to see our Reducing hose burst that early into its life. There is a required 2:1 Safety factor built into the hose to prevent premature failure such as you describe. What I do know there have been a number of people trying to copy our reducing hose. Conforms stopped selling double ended hoses in 2003. After that all our hoses have been single ended. I think there may be only one or two double ended reducing hoses out there. 

Kris, I am also a "Rock-a-billy" Though I lost much of my voice in an auto accident in '05 (crushed larnyx) I still play many instuments. Since then I have focused mostly on production & recording and have turned much of my shop into recording studio furnished with a variety of many instruments. My children have taken an intrest as musicians as well and are narturally talented. "A pump operator/musician" what a screw-up! HA!... The photo you ask of is just a picture of an X-sweet heart or an "old time used to be".

until finding this sight and wanting the safest way of placing concrete for our guys, i had always run a double ended hose with a reducer when necessary. i bought a conforms 5" to 3" reducing roughneck since the majority of our work is foundation walls and footings. have had a couple of plugs in it but all it ever did was start to form a comma shape before pressure was released. you can't pump as fast but i do believe it is better. i little bit more work involved with sucking a sponge back but i believe well worth it when you get paid by the hour.

reducing hoses = death trap why would you ever reduce in rubber this is where the majority of accidents in this industry or occuring,and I am glad someone with this hose has finally posted , I would like to know why isnt the metal reducer sufficient we have used these for years with little problems except they do catch a plug from time to time,and thats the way it should be not binding in the hose causing whipping we have two hoses 5-4 red. hoses at our shop locked up only pumped through 3 times combined and 2 of the times we had them whip due to plugging and almost plugging I do believe if you want to hear the horror stories put a post up reduction hoses and you will get plenty of responses not all bad but lots of whippings these hoses are very dangerous and the dumbest idea in the pumping industry in a long time not to offend but the hoses should be banned just like double ended discharge hoses

just trying to understand you on this one pudg2... isn't a hose with a reducer attached basically the same as a double ended discharge hose in terms of whipping a metal end around? i bought it with the intent of safety since i just had a double ended 4" with reducer on it when the reducer end blew off while pumping a wall.... watched it fall to the ground luckily without hurting anyone. you do have to pay attention and pump a little slower but otherwise assumed that conforms wouldn't put something out there that was an unsafe item to use since it is being used properly

only1putz , I think pudg put the reducer at the boomtip and mount a 3" endhose.... We do so in Sweden.....Not a reducer on a doubleended hose....

Only1putz...Unless it is an old 845 Thompsen, Why the hell would anyone hang a DE hose + reducer+more hose??? Reducers are attached to the tip elbow then hose...Concrete should NOT be reduced in anything other than STEEL plain and simple. If thats too much to handle they should run a 2" ball valve pump!! 

sorry i didn't clarify on the double ended hose. i meant a 5 to 4 reducer with a double ended hose and then a 4 to 3 reducer. that was my interpretation.

what's the difference then between a double ended hose hanging by your knees to get hit with or a 4 to 3 reducer?

only1putz, Thats still a no-no. I doubt pudg does this or this is what he was reffering to. Most common reduction process is 5to4 off the boom then 4to3 etc.with no hose in between reducers. Hang'n a double ender with a reducer attached to the end? I'd bet my bottom $$ this is not what he meant or something he would even consider!

Like this....

First a "faber-valve" (an air-valve) 5"-4" then 4"-3" and a 3"endhose....           

only1,thank god for that,just kidding,you hook the reducer to your 5" double 90s at the end of the boom then you hook up a single ended hose your reductions are kept in steel, the safest way, no reducing in rubber ,do you understand my point 

clarification we have 5-3 reducing 90s they work well,we have 5-3 reducers,we have a 5-4 then a 4-3 then your single ended hose unless you need to lay additional line then you break back to reducer at which point you hook up the single end hose to continue pouring,I do classes mon-fri 5-9 pm at a rate of $50 per hour, all cod of course,credit cards not accepted,I hope this clears the confusion,one more note if you bought a reduction hose for safety you need to attend my classes or read this sites post a little more,we all try and give solid advice you can either take it or not but most times we are rite and just trying to help,hope it all works out and have a happy thanksgiving 

445

,

thanks for clarifying a few points. i never know it all after 16 years of pumping and will still continue to learn until i die. happy thanksgiving to all!

thanks for the offer on the classes but will have to pass for now