[Jamie Thomas]

I had a high pressure hose rated to 3600 psi it blew looking at it there were several spots that looked like it had been sitting on the exhaust but I new that was not the case. Iv since been told it is where the water pumping through the pipe makes it vibrate and so rubs on the slabs ect has this happened to anyone else as iv not seen it mentioned before.

[chris scott]

Yep…even good quality hoses wear quickly at this game. Give Ben a call at Rutland pumps…he stocks compact hose.

[Smurf]

I had a high pressure hose rated to 3600 psi it blew looking at it there were several spots that looked like it had been sitting on the exhaust but I new that was not the case. Iv since been told it is where the water pumping through the pipe makes it vibrate and so rubs on the slabs ect has this happened to anyone else as iv not seen it mentioned before.

I've found cheap single braided hose will not last as long as tends to blow quicker than a good quality twin braided hose.

[Jamie Thomas]

Thank you

[BDCS]

If a single braid hose rated at 3600 psi is used then its working pretty much at its limit so any damage will result in a burst. I have twin wire hoses that have no outer rubber left and have been in use for over 10 years but you have to be careful winding then in. Re-ending is also touted as being illegal by the big firms but my local firm do it - I cleared their drain for free last week

[Smurf]

I had a high pressure hose rated to 3600 psi it blew looking at it there were several spots that looked like it had been sitting on the exhaust but I new that was not the case. Iv since been told it is where the water pumping through the pipe makes it vibrate and so rubs on the slabs ect has this happened to anyone else as iv not seen it mentioned before.

It happens all the time. Just have to make sure the hoze run flat as you can and not rubbing on any edges as you work. 
If need be you could put blocks of sponge or anything else under the hose that will help it stop rubbing on edges.

[BDCS]

The issue is the shock load when you shut the trigger

[Smurf]

The issue is the shock load when you shut the trigger

Would you say that reduces when you use an unloader (return to tank bypass) on the washer?

[BDCS]

No not really. If the water travels down the hose under pressure and then stops suddenly when you shut the trigger then the working pressure will exceed that which the unloader is set.  This is why we have twin braided hoses rated at 5000 psi otherwise everyone would supply single braid lightweight hoses rated at 3600 psi - they are fine for light use but soon fail in a commercial setting.

[Smurf]

Thought so but thought I would ask...Thanks

[chris scott]

330bar compact.