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Waste traps
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PeterC
Nov 11, 2018, 5:29:58 AM11/11/18
to
In the process of renewing the waste systems in bathroom and kitchen - got
fed up with the traps needing frequent bleaching in the warm weather.
The bathroom will have a HepVo, 32 mm (it's been in that size from new),
with just one after the swept T. This will ensure that it's well flushed out
and I see no point in separating 2 drains that are about 2' apart.
The exising shallow trap on the bath allowed backflow from the basin; OK,
this will still happen, but there won't be the crud from the trap.
Whilst looking at such traps I came across the Macvalve, McAlpine's
equivalent:
https://mcalpineplumbing.com/traps/macvalve
and one of those is on the kitchen sink as that job is done.
Now, looking at fittings for the bathroom I found on TS yet another of these
waterless traps, the Viva Magna, and it's a lot cheaper than the other two.
https://www.toolstation.com/shop/Plumbing/d20/Traps+%26+Waste/sd2907/Viva+Magna+Self-Sealing+Waste+Valve/p82878
Wish I'd seen those first!
https://www.vivasanitary.co.uk/products/traps/32mm-magna-self-sealing-waste-valve.aspx
Now, what are the bits that go onto the waste outlet to fit into the
pipework - I need 32 and 40 mm.
BTW, I'm using push-fit; the compression system on the washing machine
doesn't give me confidence and the solvent weld in the bathroom is awkward
to modify. The sink already had push-fit from when it was installed ~45
years ago. So long as the clips are strategically placed it's all OK.
--
Peter.
The gods will stay away
whilst religions hold sway
fed up with the traps needing frequent bleaching in the warm weather.
The bathroom will have a HepVo, 32 mm (it's been in that size from new),
with just one after the swept T. This will ensure that it's well flushed out
and I see no point in separating 2 drains that are about 2' apart.
The exising shallow trap on the bath allowed backflow from the basin; OK,
this will still happen, but there won't be the crud from the trap.
Whilst looking at such traps I came across the Macvalve, McAlpine's
equivalent:
https://mcalpineplumbing.com/traps/macvalve
and one of those is on the kitchen sink as that job is done.
Now, looking at fittings for the bathroom I found on TS yet another of these
waterless traps, the Viva Magna, and it's a lot cheaper than the other two.
https://www.toolstation.com/shop/Plumbing/d20/Traps+%26+Waste/sd2907/Viva+Magna+Self-Sealing+Waste+Valve/p82878
Wish I'd seen those first!
https://www.vivasanitary.co.uk/products/traps/32mm-magna-self-sealing-waste-valve.aspx
Now, what are the bits that go onto the waste outlet to fit into the
pipework - I need 32 and 40 mm.
BTW, I'm using push-fit; the compression system on the washing machine
doesn't give me confidence and the solvent weld in the bathroom is awkward
to modify. The sink already had push-fit from when it was installed ~45
years ago. So long as the clips are strategically placed it's all OK.
--
Peter.
The gods will stay away
whilst religions hold sway
Tim Watts
Nov 11, 2018, 5:46:36 AM11/11/18
to
On 11/11/18 10:29, PeterC wrote:
> In the process of renewing the waste systems in bathroom and kitchen - got
> fed up with the traps needing frequent bleaching in the warm weather.
>
> The bathroom will have a HepVo, 32 mm (it's been in that size from new),
> with just one after the swept T. This will ensure that it's well flushed out
> and I see no point in separating 2 drains that are about 2' apart.
I'd agree with that. I have 2 appliance standpipes next to each other
> In the process of renewing the waste systems in bathroom and kitchen - got
> fed up with the traps needing frequent bleaching in the warm weather.
>
> The bathroom will have a HepVo, 32 mm (it's been in that size from new),
> with just one after the swept T. This will ensure that it's well flushed out
> and I see no point in separating 2 drains that are about 2' apart.
running into one homebrew 50mm trap (made of tees and bends with
inspection caps for clearing). I can cap off unused standpipes if
necessary.
> The exising shallow trap on the bath allowed backflow from the basin; OK,
> this will still happen, but there won't be the crud from the trap.
>
> Whilst looking at such traps I came across the Macvalve, McAlpine's
> equivalent:
> https://mcalpineplumbing.com/traps/macvalve
> and one of those is on the kitchen sink as that job is done.
>
> Now, looking at fittings for the bathroom I found on TS yet another of these
> waterless traps, the Viva Magna, and it's a lot cheaper than the other two.
> https://www.toolstation.com/shop/Plumbing/d20/Traps+%26+Waste/sd2907/Viva+Magna+Self-Sealing+Waste+Valve/p82878
> Wish I'd seen those first!
> https://www.vivasanitary.co.uk/products/traps/32mm-magna-self-sealing-waste-valve.aspx
>
> Now, what are the bits that go onto the waste outlet to fit into the
> pipework - I need 32 and 40 mm.
systems as it relies on a chunky rubber ring.
Your 1 1/4" device above should just work on your 32mm and 1 1/2" on 40mm.
But if you need to adapt pipework, these are the range of universal
compression fittings that will take either push fit or solvent weld:
https://www.screwfix.com/c/heating-plumbing/waste-pipe-fittings/cat831524#category=cat831606&colour=white
Basically (as far as I've ever come across) any fitting like your traps
that have ends that look like those, are universal. If it clamps down
tight on the pipe, it's working.
> BTW, I'm using push-fit; the compression system on the washing machine
> doesn't give me confidence and the solvent weld in the bathroom is awkward
> to modify. The sink already had push-fit from when it was installed ~45
> years ago. So long as the clips are strategically placed it's all OK.
>
--
PeterC
Nov 11, 2018, 12:10:46 PM11/11/18
to
On Sun, 11 Nov 2018 10:46:32 +0000, Tim Watts wrote:
>> Now, what are the bits that go onto the waste outlet to fit into the
>> pipework - I need 32 and 40 mm.
>
> Usually some sort of universal compression joint - should fit both
> systems as it relies on a chunky rubber ring.
>
> Your 1 1/4" device above should just work on your 32mm and 1 1/2" on 40mm.
>
> But if you need to adapt pipework, these are the range of universal
> compression fittings that will take either push fit or solvent weld:
>
> https://www.screwfix.com/c/heating-plumbing/waste-pipe-fittings/cat831524#category=cat831606&colour=white
>
> Basically (as far as I've ever come across) any fitting like your traps
> that have ends that look like those, are universal. If it clamps down
> tight on the pipe, it's working.
Thanks - I'd looked at those. I need the BSP(?) to go onto the waste outlet
>> Now, what are the bits that go onto the waste outlet to fit into the
>> pipework - I need 32 and 40 mm.
>
> Usually some sort of universal compression joint - should fit both
> systems as it relies on a chunky rubber ring.
>
> Your 1 1/4" device above should just work on your 32mm and 1 1/2" on 40mm.
>
> But if you need to adapt pipework, these are the range of universal
> compression fittings that will take either push fit or solvent weld:
>
> https://www.screwfix.com/c/heating-plumbing/waste-pipe-fittings/cat831524#category=cat831606&colour=white
>
> Basically (as far as I've ever come across) any fitting like your traps
> that have ends that look like those, are universal. If it clamps down
> tight on the pipe, it's working.
from the basin/bath (not from the trap) to the pipe, so female thread on the
waste (the same as on a trap that goes onto the waste) to compression/push
female - the push could be male.
I've looked at the flexible ones, but they're corrugated and thus just many
wateer traps to go manky.
Chris French
Nov 11, 2018, 3:10:09 PM11/11/18
to
PeterC <giraffe...@homecall.co.uk> Wrote in message:
> On Sun, 11 Nov 2018 10:46:32 +0000, Tim Watts wrote:>> Now, what are the bits that go onto the waste outlet to fit into the>> pipework - I need 32 and 40 mm.> > Usually some sort of universal compression joint - should fit both > systems as it relies on a chunky rubber ring.> > Your 1 1/4" device above should just work on your 32mm and 1 1/2" on 40mm.> > But if you need to adapt pipework, these are the range of universal > compression fittings that will take either push fit or solvent weld:> > https://www.screwfix.com/c/heating-plumbing/waste-pipe-fittings/cat831524#category=cat831606&colour=white> > Basically (as far as I've ever come across) any fitting like your traps > that have ends that look like those, are universal. If it clamps down > tight on the pipe, it's working.Thanks - I'd looked at those. I need the BSP(?) to go onto the waste outletfrom the basin/bath (not from the trap) to the pipe, so female thread on thewaste (the same as on a trap that goes onto the waste) to compression/pushfemale - the push could be male.I've looked at the flexible ones, but they're corrugated and thus just manywateer traps to go manky.-- Peter.The gods will stay away whilst religions hold sway
So you want something like this. I assume the stub is the same
size as the relevant pipe (there will be details on the webpage)
so you can use a compression coupler to connect to your pushfit
pipe
https://mcalpineplumbing.com/plastic-chrome-fittings/sundry-fittin
gs-bsp-couplings/s22lc-extension-piece
--
Chris French
> On Sun, 11 Nov 2018 10:46:32 +0000, Tim Watts wrote:>> Now, what are the bits that go onto the waste outlet to fit into the>> pipework - I need 32 and 40 mm.> > Usually some sort of universal compression joint - should fit both > systems as it relies on a chunky rubber ring.> > Your 1 1/4" device above should just work on your 32mm and 1 1/2" on 40mm.> > But if you need to adapt pipework, these are the range of universal > compression fittings that will take either push fit or solvent weld:> > https://www.screwfix.com/c/heating-plumbing/waste-pipe-fittings/cat831524#category=cat831606&colour=white> > Basically (as far as I've ever come across) any fitting like your traps > that have ends that look like those, are universal. If it clamps down > tight on the pipe, it's working.Thanks - I'd looked at those. I need the BSP(?) to go onto the waste outletfrom the basin/bath (not from the trap) to the pipe, so female thread on thewaste (the same as on a trap that goes onto the waste) to compression/pushfemale - the push could be male.I've looked at the flexible ones, but they're corrugated and thus just manywateer traps to go manky.-- Peter.The gods will stay away whilst religions hold sway
So you want something like this. I assume the stub is the same
size as the relevant pipe (there will be details on the webpage)
so you can use a compression coupler to connect to your pushfit
pipe
https://mcalpineplumbing.com/plastic-chrome-fittings/sundry-fittin
gs-bsp-couplings/s22lc-extension-piece
--
Chris French
PeterC
Nov 12, 2018, 3:06:18 AM11/12/18
to
On Sun, 11 Nov 2018 13:28:07 +0000 (GMT+00:00), Chris French wrote:
> So you want something like this. I assume the stub is the same
> size as the relevant pipe (there will be details on the webpage)
> so you can use a compression coupler to connect to your pushfit
> pipe
>
> https://mcalpineplumbing.com/plastic-chrome-fittings/sundry-fittin
> gs-bsp-couplings/s22lc-extension-piece
Yes, something like that would do the job, thanks.
> So you want something like this. I assume the stub is the same
> size as the relevant pipe (there will be details on the webpage)
> so you can use a compression coupler to connect to your pushfit
> pipe
>
> https://mcalpineplumbing.com/plastic-chrome-fittings/sundry-fittin
> gs-bsp-couplings/s22lc-extension-piece
I've found an Inlet T - it's as a standard T but one side has the fitting to
go onto a waste outlet.
Almost all of the fittings are made to go onto traps, not outlets.
(BTW, I couldn't use more of my quoted text in your reply as it was all on
one line in the follow-up that I tried!).
--
Peter.
Tim Watts
Nov 12, 2018, 4:17:44 AM11/12/18
to
On 11/11/18 17:10, PeterC wrote:
> Thanks - I'd looked at those. I need the BSP(?) to go onto the waste outlet
> from the basin/bath (not from the trap) to the pipe, so female thread on the
> waste (the same as on a trap that goes onto the waste) to compression/push
> female - the push could be male.
> I've looked at the flexible ones, but they're corrugated and thus just many
> wateer traps to go manky.
>
Confused...
> Thanks - I'd looked at those. I need the BSP(?) to go onto the waste outlet
> from the basin/bath (not from the trap) to the pipe, so female thread on the
> waste (the same as on a trap that goes onto the waste) to compression/push
> female - the push could be male.
> I've looked at the flexible ones, but they're corrugated and thus just many
> wateer traps to go manky.
>
The thread is not important - you go directly onto whatever pipe you
have (and if you need new bits of pipe, you can use wither pushfit or
solvent as the universal fittings are adaptive enough not to car.
Chris French
Nov 12, 2018, 7:06:20 AM11/12/18
to
PeterC <giraffe...@homecall.co.uk> Wrote in message:
> On Sun, 11 Nov 2018 13:28:07 +0000 (GMT+00:00), Chris French wrote:> So you want something like this. I assume the stub is the same> size as the relevant pipe (there will be details on the webpage)> so you can use a compression coupler to connect to your pushfit> pipe> > https://mcalpineplumbing.com/plastic-chrome-fittings/sundry-fittin> gs-bsp-couplings/s22lc-extension-pieceYes, something like that would do the job, thanks.I've found an Inlet T - it's as a standard T but one side has the fitting togo onto a waste outlet.Almost all of the fittings are made to go onto traps, not outlets.
Because mostly people fit the trap directly to the waste outlet.
Fittings are around , but generalists like screwfix/TS don't
always stock less popular stuff, so you need to look
around.
(BTW, I couldn't use more of my quoted text in your reply as it
Yeah, my newsreader has started mangling some replies for some reason
--
Chris French
Chris French
Nov 12, 2018, 7:08:41 AM11/12/18
to
Tim Watts <t...@example.com> Wrote in message:
> On 11/11/18 17:10, PeterC wrote:> Thanks - I'd looked at those. I need the BSP(?) to go onto the waste outlet> from the basin/bath (not from the trap) to the pipe, so female thread on the> waste (the same as on a trap that goes onto the waste) to compression/push> female - the push could be male.> I've looked at the flexible ones, but they're corrugated and thus just many> wateer traps to go manky.> Confused...The thread is not important - you go directly onto whatever pipe you have (and if you need new bits of pipe, you can use wither pushfit or solvent as the universal fittings are adaptive enough not to car.-- Email does not work
The OP wants I think to put the waterless trap downstream, inline
with the pipe, and has been looking for a fitting that will
connect pipe to the waste BSP. Hence my suggestion in another
reply
--
Chris French
> On 11/11/18 17:10, PeterC wrote:> Thanks - I'd looked at those. I need the BSP(?) to go onto the waste outlet> from the basin/bath (not from the trap) to the pipe, so female thread on the> waste (the same as on a trap that goes onto the waste) to compression/push> female - the push could be male.> I've looked at the flexible ones, but they're corrugated and thus just many> wateer traps to go manky.> Confused...The thread is not important - you go directly onto whatever pipe you have (and if you need new bits of pipe, you can use wither pushfit or solvent as the universal fittings are adaptive enough not to car.-- Email does not work
The OP wants I think to put the waterless trap downstream, inline
with the pipe, and has been looking for a fitting that will
connect pipe to the waste BSP. Hence my suggestion in another
reply
--
Chris French
Tim Watts
Nov 12, 2018, 8:25:56 AM11/12/18
to
Looks like there's an adaptor to install inline:
http://hepvo.com/wp-content/uploads/2017/04/HepvO-US-RV-Plumbing-Installtion-Guide.pdf
PeterC
Nov 12, 2018, 11:17:09 AM11/12/18
to
On Mon, 12 Nov 2018 13:25:50 +0000, Tim Watts wrote:
>> The OP wants I think to put the waterless trap downstream, inline
>> with the pipe, and has been looking for a fitting that will
>> connect pipe to the waste BSP. Hence my suggestion in another
>> reply
>>
>
> Oh - I see...
>
> Looks like there's an adaptor to install inline:
>
> http://hepvo.com/wp-content/uploads/2017/04/HepvO-US-RV-Plumbing-Installtion-Guide.pdf
The HepvO is OK but not readily available, certainly not on its own.
>> The OP wants I think to put the waterless trap downstream, inline
>> with the pipe, and has been looking for a fitting that will
>> connect pipe to the waste BSP. Hence my suggestion in another
>> reply
>>
>
> Oh - I see...
>
> Looks like there's an adaptor to install inline:
>
> http://hepvo.com/wp-content/uploads/2017/04/HepvO-US-RV-Plumbing-Installtion-Guide.pdf
I went in to B&Q today and there are Floplast Trap Height Adjustors (sic) in
32 and 40 mm; a bit of fiddling with a (packaged) push-fit bit showed that
they're OK.
I'll have to come from the tra and then 1x45 deg, bend for the bath and 2
for the basin - rather 2x45 than 2x90, as it's freer flow.
The 'fun' part will be getting the old pipe out of the wall and cleaning out
the hole. If I'm clumsy I'll damage the lead waste from the loo. It's a
rather convoluted route to the hopper - 4 bends/elbows to get behind the
soil stack.
AFAIK the HepvO is OK for use outside (I assume that any ice doesn't stick
to the seal, so it opens up OK. It'd be neater inside to do it this way.
PeterC
Nov 13, 2018, 5:28:41 PM11/13/18
to
On Mon, 12 Nov 2018 16:17:06 +0000, PeterC wrote:
>> Looks like there's an adaptor to install inline:
>>
>> http://hepvo.com/wp-content/uploads/2017/04/HepvO-US-RV-Plumbing-Installtion-Guide.pdf
Hit an obvious snag: if I remove the trap from the bath the flow is then
>> Looks like there's an adaptor to install inline:
>>
>> http://hepvo.com/wp-content/uploads/2017/04/HepvO-US-RV-Plumbing-Installtion-Guide.pdf
uphill! The shallow trap's outlet is not far below the level of the waste
outlet.
As the trap is simple and shallow and gets a reasonable flow of water at
times, I've decided to clean it and leave it there.
The HepvO can now go below the basin, simplifying the whole system.
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