Joining new plastic to old metal flush pipe

[WaterTight]

Need to replace this old high level cistern. New ones all seem to have the handle on the right but I think there's room - so my only issue is joining new flush pipe to old if the differing cistern dimensions mean I can't use existing connection. It's metal, from the straight angled off-set I'm presuming not lead but copper.

I know you can get fleixble flush pipes but that would look pretty naff I'm thinking.

So...

a) what size pipe would this existing flush pipe be?

b) if i need to re-pipe it to change angle / height a fraction what would be the best way of doing it?

Thanks

Thanks

 

[WaterTight]

I've just realised the thread title may not be accurate as it may not be necessary to use new plastic flush pipe or a part of it....

 

[WHPES]

Should be the same size, just undo the nut at the bottom

Handles can normally be switched sides (you have to switch over the fill and flush mechanism too)

 

[WaterTight]

Handles can normally be switched sides (you have to switch over the fill and flush mechanism too)

Ah, good. Thanks.

No I know the existing flush pipe will fit the new cistern but if the new cistern doesn't marry with existing flush pipe position (which is metal and looks like will have no play in pipe) I was wondering how best to allign..

 

[stevetheplumber]

should screw straight back onto the nut thats there sit it on the pipe and mark top edge and work from that if you do have to change it i always found it easier to replace in inch and a quarter plastic you need a inch and half female thread to join to the syphon thread best to use the loose nut ones like an overgrown tap connector

 

[stevetheplumber]

just remember if its an old thick one it probably contains asbestos so bag it then try and leave it for the housholder to deal with councils take small amount usually

 

[WHPES]

New one will probably need brackets under as they are only thin plastic.

 

[kirkgas]

1.5"x 38mm McAlpine female adaptor, 38x32 reducer then pipe it in 32mm plastic with a new flush pipe connector into the pan, it is possible that the flush pipe will fit inside the new syphon, you may need to use a cone shaped washer with the new nut (best ones are from McAlpine multifit fittings

 

[sheff paul]

At the risk of sounding very rough a lot of lads down under carry hot air guns ,heat up plasitic expand it over metal waste pipes seal it with silicone,never done it in UK but if done carefully it can get you out of a spot,not sure what the inspector might say

 

[turnpin]

looks like a shires lynx cistern. I have changed a few with Dudley tri-shell high level cisterns you can still use this flush pipe set up if you use a little care but you can still obtain a new 3 piece flushpipe set up to suit this installation from any good plumbers merchants good luck regards turnpin:vanish:

 

[kirkgas]

At the risk of sounding very rough a lot of lads down under carry hot air guns ,heat up plasitic expand it over metal waste pipes seal it with silicone,never done it in UK but if done carefully it can get you out of a spot,not sure what the inspector might say

haha you are not in sheep land now, get your act together

 

[tamz]

Nut and cone washer from an 1¼" mcalpine multifit.

 

[sheff paul]

haha you are not in sheep land now, get your act together

Sorry Kirk gas it does sound a bit bodgy after re reading it,common practice down there first fix plastic into walls and flare out so chrome pipe on show can enter it. Mental note to one self ''stop sounding rough'':seeya:

 

[WaterTight]

1.5"x 38mm McAlpine female adaptor, 38x32 reducer then pipe it in 32mm plastic

Thanks kirkgas. I've looked online for a while and on MCAlpine's website and can't find either of those two items. Are they a bit specialist and only available from decent merchants?

And just to clarify would the 1.5" x 38mm adaptor be a compression fitting which would join on to both 1.5" copper and 38mm standard flush pipe? I take it there's no such thing as a 1.5" x 32mm female adaptor..?

looks like a shires lynx cistern. I have changed a few with Dudley tri-shell high level cisterns you can still use this flush pipe set up if you use a little care but you can still obtain a new 3 piece flushpipe set up to suit this installation from any good plumbers merchants good luck regards turnpin:vanish:

Eagle eye! It does havea Shires written on top of syphon. The syphon has a brass thread too which I thought was novel.

Just checked out Dudley Tri-shell. £100 from Plumbase. £75 more than the one from bes.co.uk but good quality I'm guessing. Read on one description they come with brackets, does that sound right from your memory?

 

[tamz]

Thanks kirkgas. I've looked online for a while and on MCAlpine's website and can't find either of those two items. Are they a bit specialist and only available from decent merchants?

And just to clarify would the 1.5" x 38mm adaptor be a compression fitting which would join on to both 1.5" copper and 38mm standard flush pipe? I take it there's no such thing as a 1.5" x 32mm female adaptor..?

You would need an inch and a half T29 multifit x bsp and a T12M reducer.

Alternatively just use the nut and washers from any mcalpine multifit 1¼ fitting. The nuts are 1½ bsp thread.

 

[WaterTight]

Wonderful, cheers.

So if I get you right it's only the nut and washer on a multifit that makes up the difference between the different sizes, so carry some of those around and you could use a normal coupler or whatever you needed?

 

[WaterTight]

1¼" x 1½" Multifit Straight Connector | McAlpine Plumbing Products

Would the above item take me from 1 1/2" copper to 1 1/4" plastic with the least fittings?

 

[WaterTight]

And also can you pipe up to the syphon with 1 1/4" using a multifit nut and washer or does it need to change to normal flush pipe for connection to the syphon?

 

[WaterTight]

I think I've misunderstood what's being suggested. Were you suggesting I join on the syphon's threaded tail with one of these..

1½" Straight Connector Multifit x BSP Female | McAlpine Plumbing Products

Then one of these
1½" x 1¼" Multifit Reducer | McAlpine Plumbing Products

And then pipe to the pan in 1 1/4"?