ID These Please....?

[coachpotato]

Changing my HW Cylinder and the photo shows the existing connection type for all 4 connections.
Our local supplier doesn't know what type of connection these are.
They appear to be tapered slightly after the shoulder and i'm pretty sure the thread is 1".
Fitted by British Gas about 20 years ago or so.
Can they still be bought, or would it be better to change to 22mm?

Tank Connector

• coachpotato
• 3 Jul 2013
• 1

On CW In, HW Out & both Indirect CH

Tank Connector

• coachpotato
• 3 Jul 2013
• 1

On CW In, HW Out & both Indirect CH

 

[ljrgas]

looks like a copper tap connector
http://www.cqout.com/item.asp?id=4753959

 

[coachpotato]

The name stamped on the nut is Delcop 864, a quick google brought up the ibpconex website and a catalogue.
The drawings aren't very clear (to me anyway!) so it would appear it might be possible to get them, but the plumbers merchant said he didn't recognise them.
The new cylinder has 2 entry points for the CW in and HW out which accept 1" male - 22mm compression fittings, so they could be converted fairly straightforwardly I think, but the Indirect connections look like they'd accept the ones on the photos.
I'm wary of putting old connectors back on though.
I expect I could fit 1" female - 22mm compression on the threads and then reduce to 15mm for the CH piping?

 

[Burnerman]

I'd use the appropriate new connections for your new cylinder.....if your existing pipework is 3/4", then these will connect to 22mm using a 3/4" olive.
Reducing to 15mm for the CH piping......don't follow that one!
John

 

[coachpotato]

This is the connection type for the CH in and out.
Measures an 1" across, the inside is very slightly lipped.

Tank Receptacle

• coachpotato
• 3 Jul 2013
• 1

1" across ID.

So a 1" female to 22mm compression as below (and give it sufficient Hawk White!) should do the job?

1" - 22mm Coupling

• coachpotato
• 3 Jul 2013
• 1

 

[Burnerman]

If the threads mate fine, then a good few turns of PTFE tape plus sealant and all will be well. (I prefer Jet Blue sealant, but thats just me!)
John

 

[coachpotato]

Thanks for your help gentlemen!!

 

[Charnwood]

Bent cylinder unions, not tap connectors as previously suggested. You can tell this because of the tapered end.

BS864 is the British Standard for connections to copper tube.

What sort of 'local supplier' have you asked, the butcher? Even Dumb Centre and Dumbase employees should know what they are FFS.

Delcop fig. 607-6-UA Bent Union Cone. Line 10, column 1:
http://www.ibpconex.co.uk/viewRange.php?id=11

 

[coachpotato]

Thanks Charnwood, looks exactly like it.
The local supplier is a Beers Yard with a plumbing retail shop in there that is like a 3rd party?
Unfortunately i'm not as knowledgable as you folks on here regarding plumbing (even though my maternal grandfather was a Master Plumber!!) so I have to accept what i'm told usually.
I don't know if the bloke in there is just someone who is a shop assistant or if he's got experience of these things.
Looks like it's the former!
Thank you for your help.

 

[doitall]

They are Yorkshire YP 64 bent union adaptor.

1" x 22mm

 

[GasBod]

So a 1" female to 22mm compression as below (and give it sufficient Hawk White!) should do the job?

1" - 22mm Coupling

• coachpotato
• 3 Jul 2013
• 1

[/quote]

Avoid those connectors

 

[doitall]

So a 1" female to 22mm compression as below (and give it sufficient Hawk White!) should do the job?

1" - 22mm Coupling

• coachpotato
• 3 Jul 2013
• 1

Avoid those connectors [/quote]

Why they work ok, but you need more than hawk white to seal the thread.

 

[CBF]

as dia said paste on it's own won't seal the thread

 

[mfarrow]

If the thread is 1" across, then it's 3/4" BSP.

It's always based on the internal diameter of original iron pipe used for plumbing, which has circa 1/8" walls. So 3/4" pipe had a 3/4+~1/8+~1/8 = ~1" thread. This is 3/4" BSP. This was then adapted to copper (22mm being metric equivalent of 3/4" pipe, but this time measured by the outside diameter), which has thinner walls of course but the size references were retained for the brass fittings.

There are tables online which give the thread details and sizes more specifically.

 

[Charnwood]

They are Yorkshire YP 64 bent union adaptor.

1" x 22mm

No they're not, because the OP said they are stamped 'Delcop'.
Although A YP64 will do the same job, I'm a pedant.

Cheaper versions are available.
Try a proper, local, independent plumbers merchant.
The guy at Beers sounds as though he'd had a few.

If fitted correctly the thread should need no sealant of any kind. The cone, if tightened correctly, makes the seal. In theory.