I JUST HEARD FROM SOMEONE OUT WEST ABOUT THE NEW ANTI WHIPHOSE 4"PVC CUT DOWN THE MIDDLE STRAPED TO THE HOSE HELD ON WITH CHAINS RUNNING THE LEGNTH OF TH HOSE SO THAT IT CANT WHIP OSHA CHECKING INTO IT CURRENTLY

That may be a good interim solution. While it mitigates the most serious problem it adds fuel to another. The main reason for excluding the use of double ended hoses is the mass of the coupling on the discharge end. Mass, or to us regular folks, weight, has more power to damage something it hits. It is a momentum problem.

If the intent is to stop the discharge piece from flexing; why not use pipe?

A piece of boom hose 4 feet in length coupled to the swivel elbow will allow all the motion that a hose man wants or needs. Couple to that a pipe of the correct diameter and pour it out. Very soft closed cell foam covers in safety colors may be put on the pipe to stop potential injuries of someone were to fall against or to be struck by the pipe.

You have a wide range of motion

You have a non-sagging discharge

You have eliminated the whipping potential

You have decreased the mass of suspended items

You have made your pump a safer piece of equipment

And saved a lot of otherwise expended cash to get the job done  

Please remember this:

 5" X 12' hose holds 2826 sq. in. of volume

 4" X 12' hose holds 1808 sq. in. of volume

Concrete (average) weighs 150lbs per sq. ft. /1728 sq. in.

with concrete, the 5" hose will weigh 245lbs + the tare weight of the hose itself...40lbs?  so total: 285lbs (approx)

with concrete, the 4" hose will weigh 156lbs + the tare weight of the hose itself...40lbs? + 5-4 reducer full of concrete is 65lbs for a total: 261lbs (approx)

keep in mind that I didn't include weight of the clamps and the weight of force from friction moving through the hoses and weights of safety slings/chains/cables etc.

many of the modern booms won't allow a heck of alot more weight than what I've shown above.  before you go and re-invent the wheel, please think of the extra load you could possibly be placing on the equipment.  While making an attempt at curing one safety issue, you might unknowingly be causing another....

Raymond

My reinvention weighs 6.6# per foot. This may also be sized to the job. Any way that you figure it I have removed weight from the equation. I do appreciate your concern for the potential overloading of the boom. I wish everyone had your mind set.

the only problem I see with the pipe is the blowout factor in case of a blockage, why not make hosemen wear motorcycle helmets and kevlar vest and full body armor its the only real solution i see is ppe for the man in danger,i know it sounds stupid but there is no easy solution,i think were looking in the wrong places for a solution either take the man off the end of the hose or give him protection may be costly but how much does a lawsuit costs?

It is always a good idea to make sure that the hoseman has on safety glasses. I know it isn't our job to dress our co-workers before they go to work... but it doesn't take much to let him use the spares you have in the cab.

and flack jackets

No disrespect Bob but safety glasses are the least of our concerns,but I always carry extras,I'm just wandering how far this is going to go,when a policeman is going into danger he wears bullet proof gear,when you use a jackhammer you have feet guards and shin protection,when are we going to come up with protection for these guys on the ends of these accidents waiting to happen,when anything else in this world has as many accidents attributed to one thing we take protective measures,but not in this case, we make excuses,we need answers and a remedy to this problem,as far as technology has come I just cant believe we don't have a solution yet,so now we put people in harms way thousands of times a day with no answer in sight,I liked Bobs idea of the pressure regulator where if the pump pressures to a certain point it shuts off,but theres so many situations where we are pumping under high pressure,I've stayed awake many nights on this matter with no answers I just dont know the answer,but I believe this site will have a major hand in the answer as long as we continue to discuss it 

Good point about the police. The guy that owns the store that is being robbed is not responsible for the protection of the cop.

Yes, someone in their industry should stop and read all of the literature that we have been handing out for the last 10 years.

We do all that we can to make it as safe as we can. They need to take better care of their people.

You are responsible, for the most part, in a hose whipping case. That is why anyone that wishes to be on the safe side is operating with anti-whip gear and paying attention.

If you have not passed out the ACPA co-worker  safety literature and spoken to each of your customers about the dangers involved with pumping, you should.

It goes a long way with a jury if you have taken a proactive stance in educating your customers; even if they choose to disregard your warnings.