using hep in upstairs 1st fix

[mark_mc]

what is everyone think of using hep in a understairs 1st fix in a house.
thinking of using hep in a house but only in understairs and drilling thru joist.

what are your experience etc.

thanks

 

[Guest123]

Just curious, why Hep and not JG Speedfit?

 

[mark_mc]

do use JG speedfit much. and well its not much of a difference to me, i have used hep before and it been a1.

 

[richw]

we dont even test screwed iron to that sort of pressure!!

 

[mark_mc]

that is what i was thinking thats mad pressure. we do sprinkers and we never test to that pressure and its screwed iron, if i had to test at that pressure i will run the hose out to the van and take cover just incase.
wouldnt want to wreck my pretty fa

 

[Guest123]

I see. That's the way I work, I use what works best for me. Not had any experience of Hep, but used Speedfit many times and not once had any problems with anything I've installed. Only probs I've seen are where diy'ers, joiners and other trades fit it incorrectly and then through time it blows off!
My all time preference is yorkies and copper, but copper is too bloody expensive and using a gas torch gives my insurance company the heebie geebies!

 

[richw]

18 bar or 250 odd psi is just about enough to get a push fit fitting into orbit.

 

[mark_mc]

Would definitely test more than 4 as I have had fittings with the teeth not properly engaged cling on until 10 bar then pop off!

very good point and its true.

when i tested a 1st fix with hep got to 10bar and everything started to click it must take that pressure to engage the teeth

and as he said they reccomend 16 bar demountable fittings and 18bar for the slimline

 

[Nat]

Plus you should bear in mind that this is all cold testing. Once you put heat into pipes leaks can appear where there weren't before when cold tested.

 

[SafeGasInstall]

never ever worked with push fittings only in college !

some love them some hate them I dont use them

 

[unguided1]

I have used some of the new hep white fittings on grey pipe but not used the white pipe, my only concern is that if you mix hep fittings or speedfit fittings on either of there pipes your supposed to use the correct insert for the pipe so if in the future you see white pipe on a job you may automatically assume that it is speed fit and install the wrong inserts