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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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bath traps
Hello,
What is the best type of trap for a bath? I'm sure that I've read here before that bottle traps are not recommended because they can clog with hair etc. but the alternative seems to be a shallow bath trap with 20mm seal and I thought these could be emptied easily by syphonic effects. Is it best to have a large P-trap with access hole for cleaning? Is the idea of the shallow trap that it will fit between the bath and floorboards? In my bathroom someone has cut a hole in the floorboards to fit a larger trap. Is this a problem? Do fire regs. mean that all floor should be boarded? If so, I've got a gap in the airing cupboard floor too. Why is the seal height of a trap always given in millimetres: why don't they just say standard or shallow? Is the number of millimetres that critical? Thanks, Stephen. |
#2
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bath traps
On Thu, 20 Nov 2008 20:40:42 +0000, Stephen
wrote: Hello, What is the best type of trap for a bath? I'm sure that I've read here before that bottle traps are not recommended because they can clog with hair etc. but the alternative seems to be a shallow bath trap with 20mm seal and I thought these could be emptied easily by syphonic effects. Is it best to have a large P-trap with access hole for cleaning? Is the idea of the shallow trap that it will fit between the bath and floorboards? In my bathroom someone has cut a hole in the floorboards to fit a larger trap. Is this a problem? Do fire regs. mean that all floor should be boarded? If so, I've got a gap in the airing cupboard floor too. Why is the seal height of a trap always given in millimetres: why don't they just say standard or shallow? Is the number of millimetres that critical? Thanks, Stephen. I have a shallow trap with an access point covered by a screw on cap. The bath empties fine . I wouldn't worry about the hole in the floor if I were you . |
#3
Posted to uk.d-i-y
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bath traps
Stephen wrote:
Hello, What is the best type of trap for a bath? I'm sure that I've read here before that bottle traps are not recommended because they can clog with hair etc. but the alternative seems to be a shallow bath trap with 20mm seal and I thought these could be emptied easily by syphonic effects. Is it best to have a large P-trap with access hole for cleaning? Is the idea of the shallow trap that it will fit between the bath and floorboards? In my bathroom someone has cut a hole in the floorboards to fit a larger trap. Is this a problem? Do fire regs. mean that all floor should be boarded? If so, I've got a gap in the airing cupboard floor too. Why is the seal height of a trap always given in millimetres: why don't they just say standard or shallow? Is the number of millimetres that critical? Thanks, Stephen. Just to make sure you do know the alternatives, there is also HepVO. Which I fitted to our bath. Fastest emptying bath I have ever had! -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org |
#4
Posted to uk.d-i-y
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bath traps
On 20 Nov, 21:15, Rod wrote:
Stephen wrote: Hello, What is the best type of trap for a bath? I'm sure that I've read here before that bottle traps are not recommended because they can clog with hair etc. but the alternative seems to be a shallow bath trap with 20mm seal and I thought these could be emptied easily by syphonic effects. Is it best to have a large P-trap with access hole for cleaning? Is the idea of the shallow trap that it will fit between the bath and floorboards? In my bathroom someone has cut a hole in the floorboards to fit a larger trap. Is this a problem? Do fire regs. mean that all floor should be boarded? If so, I've got a gap in the airing cupboard floor too. Why is the seal height of a trap always given in millimetres: why don't they just say standard or shallow? Is the number of millimetres that critical? Thanks, Stephen. Just to make sure you do know the alternatives, there is also HepVO. Which I fitted to our bath. Fastest emptying bath I have ever had! -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org Thanks for that lead on the HepvO products - I ought to fit an air admittance valve to our bath trap but one of these looks a better option. Literature is available on this webpage (pdf file) http://www.hepworthplumbing.co.uk/He...e%20valves.pdf Rob |
#5
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bath traps
On 21 Nov, 09:12, robgraham wrote:
On 20 Nov, 21:15, Rod wrote: Stephen wrote: Hello, What is the best type of trap for a bath? I'm sure that I've read here before that bottle traps are not recommended because they can clog with hair etc. but the alternative seems to be a shallow bath trap with 20mm seal and I thought these could be emptied easily by syphonic effects. Is it best to have a large P-trap with access hole for cleaning? Is the idea of the shallow trap that it will fit between the bath and floorboards? In my bathroom someone has cut a hole in the floorboards to fit a larger trap. Is this a problem? Do fire regs. mean that all floor should be boarded? If so, I've got a gap in the airing cupboard floor too. Why is the seal height of a trap always given in millimetres: why don't they just say standard or shallow? Is the number of millimetres that critical? Thanks, Stephen. Just to make sure you do know the alternatives, there is also HepVO. Which I fitted to our bath. Fastest emptying bath I have ever had! -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org Thanks for that lead on the HepvO products - I ought to fit an air admittance valve to our bath trap but one of these looks a better option. Literature is available on this webpage (pdf file) http://www.hepworthplumbing.co.uk/He...e%20valves.pdf Rob A thought came to me after writing the above, and I apologise for the slight hi-jacking of the thread. The 'suck-out' that is occurring in our bath trap is due to the washing machine being on the same branch - the problem being I suspect is that the vent pipe is downstream (old cottage and the vent is a branch off the gutter downpipe) and hence the washing machine outlet is effectively sucking air in through the bath outlet. If I fit a HepvO valve to the bath, the w/machine is going to struggle to vent - correct ? Rob |
#6
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bath traps
robgraham wrote:
On 21 Nov, 09:12, robgraham wrote: On 20 Nov, 21:15, Rod wrote: Stephen wrote: Hello, What is the best type of trap for a bath? I'm sure that I've read here before that bottle traps are not recommended because they can clog with hair etc. but the alternative seems to be a shallow bath trap with 20mm seal and I thought these could be emptied easily by syphonic effects. Is it best to have a large P-trap with access hole for cleaning? Is the idea of the shallow trap that it will fit between the bath and floorboards? In my bathroom someone has cut a hole in the floorboards to fit a larger trap. Is this a problem? Do fire regs. mean that all floor should be boarded? If so, I've got a gap in the airing cupboard floor too. Why is the seal height of a trap always given in millimetres: why don't they just say standard or shallow? Is the number of millimetres that critical? Thanks, Stephen. Just to make sure you do know the alternatives, there is also HepVO. Which I fitted to our bath. Fastest emptying bath I have ever had! -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org Thanks for that lead on the HepvO products - I ought to fit an air admittance valve to our bath trap but one of these looks a better option. Literature is available on this webpage (pdf file) http://www.hepworthplumbing.co.uk/He...e%20valves.pdf Rob A thought came to me after writing the above, and I apologise for the slight hi-jacking of the thread. The 'suck-out' that is occurring in our bath trap is due to the washing machine being on the same branch - the problem being I suspect is that the vent pipe is downstream (old cottage and the vent is a branch off the gutter downpipe) and hence the washing machine outlet is effectively sucking air in through the bath outlet. If I fit a HepvO valve to the bath, the w/machine is going to struggle to vent - correct ? Rob Should be no problem. The HepVO provides virtually no resistance to inflowing air. Could you also use a HepVO on the w/m connection? (Assuming it is physically possible, that is perfectly acceptable.) So far we have three (two basins and the bath). (No - not on commission from Hepworths. :-) ) -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org |
#7
Posted to uk.d-i-y
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bath traps
On Fri, 21 Nov 2008 09:40:35 +0000, Rod
wrote: robgraham wrote: On 21 Nov, 09:12, robgraham wrote: On 20 Nov, 21:15, Rod wrote: Stephen wrote: Hello, What is the best type of trap for a bath? I'm sure that I've read here before that bottle traps are not recommended because they can clog with hair etc. but the alternative seems to be a shallow bath trap with 20mm seal and I thought these could be emptied easily by syphonic effects. Is it best to have a large P-trap with access hole for cleaning? Is the idea of the shallow trap that it will fit between the bath and floorboards? In my bathroom someone has cut a hole in the floorboards to fit a larger trap. Is this a problem? Do fire regs. mean that all floor should be boarded? If so, I've got a gap in the airing cupboard floor too. Why is the seal height of a trap always given in millimetres: why don't they just say standard or shallow? Is the number of millimetres that critical? Thanks, Stephen. Just to make sure you do know the alternatives, there is also HepVO. Which I fitted to our bath. Fastest emptying bath I have ever had! -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org Thanks for that lead on the HepvO products - I ought to fit an air admittance valve to our bath trap but one of these looks a better option. Literature is available on this webpage (pdf file) http://www.hepworthplumbing.co.uk/He...e%20valves.pdf Rob A thought came to me after writing the above, and I apologise for the slight hi-jacking of the thread. The 'suck-out' that is occurring in our bath trap is due to the washing machine being on the same branch - the problem being I suspect is that the vent pipe is downstream (old cottage and the vent is a branch off the gutter downpipe) and hence the washing machine outlet is effectively sucking air in through the bath outlet. If I fit a HepvO valve to the bath, the w/machine is going to struggle to vent - correct ? Rob Should be no problem. The HepVO provides virtually no resistance to inflowing air. Could you also use a HepVO on the w/m connection? (Assuming it is physically possible, that is perfectly acceptable.) So far we have three (two basins and the bath). We had a HepvO valve on a sink but we got regular bad smells and replaced it with a conventional trap. -- (\__/) M. (='.'=) Owing to the amount of spam posted via googlegroups and (")_(") their inaction to the problem. I am blocking most articles posted from there. If you wish your postings to be seen by everyone you will need use a different method of posting. See http://improve-usenet.org |
#8
Posted to uk.d-i-y
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bath traps
On 21 Nov, 09:35, robgraham wrote:
A thought came to me after writing the above, and I apologise for the slight hi-jacking of the thread. *The 'suck-out' that is occurring in our bath trap is due to the washing machine being on the same branch - the problem being I suspect is that the vent pipe is downstream (old cottage and the vent is a branch off the gutter downpipe) and hence the washing machine outlet is effectively sucking air in through the bath outlet. If I fit a HepvO valve to the bath, the w/machine is going to struggle to vent - correct ? We have a similar configuration, and indeed used to find the bath trap would occasionally empty due to the washing machine induced syphon. A deeper trap was not an option for us due to the flooring/plumbing layout and so a HepVO trap was fitted as an experiment... Five years on and I can confirm it works. Highly recommended. Mathew |
#9
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bath traps
On 21 Nov, 13:18, Mathew Newton wrote:
On 21 Nov, 09:35, robgraham wrote: A thought came to me after writing the above, and I apologise for the slight hi-jacking of the thread. *The 'suck-out' that is occurring in our bath trap is due to the washing machine being on the same branch - the problem being I suspect is that the vent pipe is downstream (old cottage and the vent is a branch off the gutter downpipe) and hence the washing machine outlet is effectively sucking air in through the bath outlet. If I fit a HepvO valve to the bath, the w/machine is going to struggle to vent - correct ? We have a similar configuration, and indeed used to find the bath trap would occasionally empty due to the washing machine induced syphon. A deeper trap was not an option for us due to the flooring/plumbing layout and so a HepVO trap was fitted as an experiment... Five years on and I can confirm it works. Highly recommended. Mathew Thanks guys - Hepv0 it will be. Apologies for the hijack Stephen - I hope the answers I got were helpful to you too. Rob |
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