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Can you do a job on my boat for me? (Tewkesbury)


PaulG

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Good 'photos and descriptions.

 

It looks like the trickiest job will be movihg the Te junction from left to right because of the paneling and bulkheads. Can the NuLoo be easily changed or is there room to double back from the Te? Moving the Te will need ether a new length of pipe from whatener is to the left of it (Best option) or a sraight connecter in place of the Te.

 

I should be able to make it on Tuseday but have been put on 24 Hr callout by the firm (The rissoles!). PM me for a 'phone number.

Hi - thanks for your offer of help.

I was getting resigned to doing the job myself.

I was going to use one of these flexible connectors as a work round for my lack of plumbing skills:

Screwfix are open until 4pm and I'll go and get one if you think it's a good idea.

http://www.screwfix.com/p/flexible-hose-with-valve-15mm-x-x-500mm/3087g#product_additional_details_container

post-5065-0-81943900-1465119927_thumb.jpg

Edited by PaulG
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Hi - thanks for your offer of help.

I was getting resigned to doing the job myself.

I was going to use one of these flexible connectors as a work round for my lack of plumbing skills:

Screwfix are open until 4pm and I'll go and get one if you think it's a good idea.

http://www.screwfix.com/p/flexible-hose-with-valve-15mm-x-x-500mm/3087g#product_additional_details_container

attachicon.gifae235.jpg

Hi. Late getting back to you but just after my last post a freind of a frend 'phoned to tell me he had let all the Magic Smoke out of his control/swtch panel and we all know nothing works without its' Magic Smoke. 'Must remember to order some more this week.

 

I should be with you by mid morning all things being equal (HO! HO! HO!). If you could PM me and swap 'phone numbers 'just in case' that would be good, also can you tip the office off that this isn't a commercial undertaking. Some places get a bit snotty about vans turning up esecialy if they have 'tame' fitters.

 

The flexi thing a a jolly good idea. It actualy looks rather slick so if all else fails you'll get 'to go' on your trip.

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I quoted for a similar job for Mick Jagger once. Eventually, he decided to leave it as it was, but he was good enough to ring to let me know.

Funnily enough, I can still remember the call today:

 

 

He said "I know it's only a rocking bowl, but I like it".

 

 

 

I'll get me coat....

  • Greenie 1
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Hi - thanks for your offer of help.

I was getting resigned to doing the job myself.

I was going to use one of these flexible connectors as a work round for my lack of plumbing skills:

Screwfix are open until 4pm and I'll go and get one if you think it's a good idea.

http://www.screwfix.com/p/flexible-hose-with-valve-15mm-x-x-500mm/3087g#product_additional_details_container

attachicon.gifae235.jpg

 

Hi - thanks for your offer of help.

I was getting resigned to doing the job myself.

I was going to use one of these flexible connectors as a work round for my lack of plumbing skills:

Screwfix are open until 4pm and I'll go and get one if you think it's a good idea.

http://www.screwfix.com/p/flexible-hose-with-valve-15mm-x-x-500mm/3087g#product_additional_details_container

attachicon.gifae235.jpg

Those flex lines aren't real good at making 90 degree bends. If you can find a cap to screw on the existing T fitting and then install a new T fitting on the other side, that would probably be the best and easiest thing to do.

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Those flex lines aren't real good at making 90 degree bends. If you can find a cap to screw on the existing T fitting and then install a new T fitting on the other side, that would probably be the best and easiest thing to do.

Hi Paul - always nice to hear from my "namesake"!

I've got a 90° fitting for the toilet end, so it just has to make a gentle curve over 500mm (just short of 20 inches in proper numbers).

The main problem is that it has a fitting for 1/2" copper at one end and the existing plastic fitting is 15mm.

Hopefully some kind of adaptor is available, otherwise some creative fettling will be called for...

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The main problem is that it has a fitting for 1/2" copper at one end and the existing plastic fitting is 15mm.

Hopefully some kind of adaptor is available, otherwise some creative fettling will be called for...

 

This is vanishingly unlikely. 1/2" copper is a size used exclusively on gas plumbing.

 

15mm copper pipe is often colloquially referred to as "half inch copper" (especially by older plumbers who remember the genuine thing) but it is exactly the same size as 15mm plastic pipe. 15mm plastic pipe can be inserted into 15mm brass compression fittings and 15mm copper tube can be used in 15mm plastic fittings. Copper/brass and plastic systems are universally compatible provided you don't try to solder plastic tube into a copper fitting!

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This is vanishingly unlikely. 1/2" copper is a size used exclusively on gas plumbing.

 

15mm copper pipe is often colloquially referred to as "half inch copper" (especially by older plumbers who remember the genuine thing) but it is exactly the same size as 15mm plastic pipe. 15mm plastic pipe can be inserted into 15mm brass compression fittings and 15mm copper tube can be used in 15mm plastic fittings. Copper/brass and plastic systems are universally compatible provided you don't try to solder plastic tube into a copper fitting!

 

Expanding on this a little - 1/2" pipe is 1/2" bore not OD. So, 12.7mm plus twice the wall thickness is as near as dammit 15mm

 

Richard

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If we are talking about the item linked to, it's 15mm at one end and 3/4" at the other so should go straight on provided the toilet end is expecting a 3/4" tap connector. If you are putting the 15mm end onto plastic pipe I'd recommend getting a pack of soft copper olives since the ones on these flexi tails are normally hard brass. Don't forget to use an insert into the plastic pipe. Ok if going onto copper though.

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Expanding on this a little - 1/2" pipe is 1/2" bore not OD. So, 12.7mm plus twice the wall thickness is as near as dammit 15mm

 

Richard

When I said 1/2", I measured it using the "MK1 eyeball". I don't know much about plumbing fitting so my figure of 1/2" is very likely to be duff information!

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Expanding on this a little - 1/2" pipe is 1/2" bore not OD. So, 12.7mm plus twice the wall thickness is as near as dammit 15mm

 

Richard

 

Not necessarily. The 1/2" gas pipe used in boat gas plumbing is 1/2" outside diameter. But I think technically it should be called 'tube'.

 

I think technically the difference is pipe specified by its external diameter is tube, and tube specified by its internal diameter is pipe.

When I said 1/2", I measured it using the "MK1 eyeball". I don't know much about plumbing fitting so my figure of 1/2" is very likely to be duff information!

 

 

So is the water connection on your new bog a plain-ended pipe? Or a screw thread?

 

And is the water supply pipe you want to connect to a plain ended pipe? Or a screw thread?

Or something else?

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Not necessarily. The 1/2" gas pipe used in boat gas plumbing is 1/2" outside diameter. But I think technically it should be called 'tube'.

 

I think technically the difference is pipe specified by its external diameter is tube, and tube specified by its internal diameter is pipe.

 

 

So is the water connection on your new bog a plain-ended pipe? Or a screw thread?

 

And is the water supply pipe you want to connect to a plain ended pipe? Or a screw thread?

Or something else?

Hi Mike - if you look in post #18 there are some pictures.

The bog has a screw thread, and I've bought a 90 degree fitting for this (right hand photo). The flexible pipe fits this OK.

You can see the water connection in the lower of the two pipes running along the bulkhead (left hand photo)

I think this fitting is 15mm.

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Hi Mike - if you look in post #18 there are some pictures.

The bog has a screw thread, and I've bought a 90 degree fitting for this (right hand photo). The flexible pipe fits this OK.

You can see the water connection in the lower of the two pipes running along the bulkhead (left hand photo)

I think this fitting is 15mm.

Some of that fitting is missing, do you still have it? (Presumably attached to the bit of pipe you removed). You will need a short length of 15mm pipe to bridge between that fitting and the flexi hose. Personally I'd use copper but if that's too difficult then plastic would do but, as I said, I'd get a soft copper olive. Rule 1 for avoiding leaks with those grey speedfit- type plastic connectors is to ensure the pipe is smooth and unscratched at the bit where it goes into the fitting, since the seal is made by a rubber O ring rather than malleable copper.

 

Just looking at the right-angle brass fitting, looks like is the sort that seals by means of the thread so you'll need to wrap the male thread in a few turns of PTFE tape. You might need to adjust the number of turns of tape so that it comes tight pointing the right way, but then again since the male is plastic there will probably be a fair bit of tolerance. Don't over-tighten and bust the plastic though!

Edited by nicknorman
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Some of that fitting is missing, do you still have it? (Presumably attached to the bit of pipe you removed). You will need a short length of 15mm pipe to bridge between that fitting and the flexi hose. Personally I'd use copper but if that's too difficult then plastic would do but, as I said, I'd get a soft copper olive. Rule 1 for avoiding leaks with those grey speedfit- type plastic connectors is to ensure the pipe is smooth and unscratched at the bit where it goes into the fitting, since the seal is made by a rubber O ring rather than malleable copper.

 

Just looking at the right-angle brass fitting, looks like is the sort that seals by means of the thread so you'll need to wrap the male thread in a few turns of PTFE tape. You might need to adjust the number of turns of tape so that it comes tight pointing the right way, but then again since the male is plastic there will probably be a fair bit of tolerance. Don't over-tighten and bust the plastic though!

Many thanks for the advice.

Yes, I have kept the fitting that came off the supply pipe. It's attached to a short length of plastic pipe that connected to the old toilet.

I have a reel of PTFE tape at the ready...

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Many thanks for the advice.

Yes, I have kept the fitting that came off the supply pipe. It's attached to a short length of plastic pipe that connected to the old toilet.

I have a reel of PTFE tape at the ready...

Ok so just to reiterate, the plastic pipe will need pipe inserts at both ends and the olive in the flexi pipe should be replaced with a soft copper one. Plastic pipe is best cut with the right tool (quite cheap from B&Q etc) but if you must use a hacksaw be careful to cut exactly at right angles and don't let the saw blade jump and scratch the plastic where it seals. Obviously clean up the ends and any sawing debris from inside before fitting. Ensure the pipe is fully inserted into the fittings - there will be resistance as it passes the O ring and maybe the olive. Edited by nicknorman
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Ok so just to reiterate, the plastic pipe will need pipe inserts at both ends and the olive in the flexi pipe should be replaced with a soft copper one. Plastic pipe is best cut with the right tool (quite cheap from B&Q etc) but if you must use a hacksaw be careful to cut exactly at right angles and don't let the saw blade jump and scratch the plastic where it seals. Obviously clean up the ends and any sawing debris from inside before fitting. Ensure the pipe is fully inserted into the fittings - there will be resistance as it passes the O ring and maybe the olive.

Thanks for that!

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Hi Mike - if you look in post #18 there are some pictures.

The bog has a screw thread, and I've bought a 90 degree fitting for this (right hand photo). The flexible pipe fits this OK.

You can see the water connection in the lower of the two pipes running along the bulkhead (left hand photo)

I think this fitting is 15mm.

 

Ah ok. The supply pipe photo is of a push-fit "Polyplumb" brand of fitting I think. But whatever it is, you need to recover the nut, grip ring and O ring from the bit of pipe that was removed from it when disconnecting the old bog. These parts are re-usable and can be put back onto the tee and a new length of 15mm plastic pipe pushed in. That's all there is to it at that end.

 

At the other end your, flexible braided adaptor pipe will accept the 15mm plastic pipe (use an insert or 'pipe support sleeve' as its a compression fitting.)

 

The thread on the other end of the adaptor pipe is 3/4"BSP so too big for the 1/2" BSP thread on the bog brass fitting. Similar adaptor flexi pipes are available with 1/2" BSP thread on the end. Or use a 1/2" x 3/4" brass bush as an adaptor.

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The thread on the other end of the adaptor pipe is 3/4"BSP so too big for the 1/2" BSP thread on the bog brass fitting. Similar adaptor flexi pipes are available with 1/2" BSP thread on the end. Or use a 1/2" x 3/4" brass bush as an adaptor.

 

He does say in #37 that the flexi fits the brass elbow so they are either both 3/4" or both 1/2"! (looks like 3/4" I think?)

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He does say in #37 that the flexi fits the brass elbow so they are either both 3/4" or both 1/2"! (looks like 3/4" I think?)

Just in case anyone needing to fit a similar toilet in the future refers to this thread the item I actually bought in the end was this one:

http://www.screwfix.com/p/flexible-hose-with-valve-15mm-x-x-500mm/8993g

 

I thought it was good for two reasons; firstly it's flexible, so if I had to fit it myself it doesn't need much in the way of precision pipe cutting or alignment. Secondly it includes a stop valve, which the previous plumbing did not.

 

Two birds with one stone, and all for the princely sum of £3.49.

 

Taslim is down at the boat now...hopefully progress is being made!

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Not necessarily. The 1/2" gas pipe used in boat gas plumbing is 1/2" outside diameter. But I think technically it should be called 'tube'.

 

I think technically the difference is pipe specified by its external diameter is tube, and tube specified by its internal diameter is pipe.

 

We've been here before, I think: http://somethingsurprising.blogspot.co.uk/2012/07/army-pipe-specifications.html

 

Richard

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