My water pipe can't hold pressure at the compression fitings

[barapt]

I had to replace a 8 m old water pipe 1'' (was made from galvanized steel and started to rust from inside), so I decided to use some 2 pipes of 4m pp 1''1/4'' (40mm) made of pp and I used to join them:
1 compression fitting pp 1''1/4'' x 1''1/4''
2 compression fitting pp fe 1''1/4' x 1''1/4'
both my elbows ends where I join my pipe are 1'' so I used some reductions!
(you will see them in the pictures)
Now, I'm quite sure that all the compression fittings were mounted and sealed like in the instructions, but the problem is that my pipe can't hold the water pressure on the fittings, when I start the water, my pipe start to bend sightly and the water start to leak on the fittings and after short my pipe just bounce out from fitting ( i also try'ed to hold the pipes straight and turn the pressure max low from the valve, no success).
What I'm doing wrong ? And what pipes/fittings should I use? Here are the pictures to have a better idea:

Thank you!

 

[JerryB41]

This is joke, right??

 

[havasu]

To all concerned, I checked the IP address from the original poster, and it came back to Timisoara, Romania. Our forum has folks in need from all parts of the world, so I would hope someone could help him if possible.

 

[Chris]

We use compression type fitting for city services at times. Your problem is that your pipe is not buried and since it is not buried you need more of a restrained fitting. The compression are exactlyrics that. They have nothing that actually locks them to the pipe. If it were all buried the earth would keep the pope from moving and the fitting from pushing off. You will either need a different type of fitting or a way to restrain the joints from pulling. On larger pipe they make a clamp that will clamp to the pipe with small teeth to keep it from sliding and it will have ears to use a bolt to run to a restraint on the other side of the fitting. Not sure if they make something for that small of pipe. I don't deal with stuff that small.

 

[Chris]

Do you have any rental yards you could rent a fusion machine from? Pretty much a hot plate with two sides. You melt the ends of the pipe and stick them together. Assuming that is poly pipe.

 

[SHEPLMBR]

What about barbed fittings?

 

[frodo]

you can improvise

adapt and overcome

find 2 pieces of metal , and bend them like so..

make the bracket i show,,install one on each side of compression coupling
with a rod or metal inbetween them...this will clamp the pipe and keep it from popping loose

 

[Matt30]

I have used the method frodo suggested. I will confirm it works.