HepVo Question

[apinnyon]

Hi, Does anyone know to what extent a HepVo will restrict flow in a 40mm pipe?

Thanks,

Katie

 

[seco services]

depends how much fall on the pipe its fitted to

 

[apinnyon]

fall is 70mm over 2.4m.

 

[steved101]

it shouldn't really restrict the flow at all if it is laid to the correct gradient

 

[seco services]

whats it fitted to ?
i'm not a fan of them fitted to shower trays.

 

[apinnyon]

I'm trying to decide whether to use one on the shower tray. I only have one waste pipe for bath and shower which is cut into the joists. I want to ensure there is no backflow from bath into the shower tray. I've fitted a monsoon 2 bar twin pump and worried that the HepVo will slow the drainage down.

 

[seco services]

i hope you didn't fit the waste into the joists ?

 

[apinnyon]

No, it was already there. The suite looks like its been in there since the 70's.

 

[steved101]

why can't waste pipes be put in joists like ch/supply pipes? never knew this!

 

[seco services]

i wouldn't fancy one on a shower waste.
does the bath run into the shower now ?

 

[apinnyon]

steved101 - Waste pipe was allready cut into the joists, many years ago by a previous owner.

seco services - Yes, the bath and shower I took out were running into the one pipe, but drain on the shower was very slow and pipes were full or c**p. Now I've replaced them with nice clean ones, I'm afrain the water might find its way into the shower tray.

 

[seco services]

hold on you had a bath & shower installed with waste pipes that had broke regulations.
you have changed the bath & shower and left the waste pipes in the joinst
which is against building regs.

how deep are your joists ? 8", 9" etc.

 

[seco services]

steve

max notch of any joist is 0.125 of what ever the depth maybe.

 

[apinnyon]

Joists are 9". Removing the waste and running it above the floor would not change the fact that the joists have been cut though would it? The cuts will still be there so why not leave the pipe in them.

 

[seco services]

because the last installer was a bodger don't mean you have to follow.

thats why we end up with all these regs.
the joists should be replaced or surported to give their strength back.

the max a 9" joist can be notched is 28.75mm

if the last waste was very slow and full of crud that tells me it wasn't running away fully and leaving all the crud behind
if you have put the waste in the same place i wouldn't fit a hepvo