Connection position on 900x450 cylinder

[zetland76]

Need height and size of bottom connection of hot water feed. Distance to top connection. Similar for cold water feed and hot water take off.
Is there a link to a spec for this tank?

Thanks

Mike

 

[andytheplumber]

Best to have the cylinder in place first and then connect from there

 

[zetland76]

I've got a 50 year old cylinder with a leak. It will be imperial. Just wondered if a new metric one would fit on the old pipework?

 

[kirkgas]

try the manufacturers websites, mcdonald engineering in glenrothes fife could be a good place to start, telford copper cylinders has a full technical layout and worth a look as well

 

[powell30]

No......why would imperial be a straight fit to metric?

2 options, use 22mm compressions with imperial olives (use some jointing compound). Or use 22mm pushfits if the imperial pipe will take it. I find you can get away with it sometimes.

 

[andytheplumber]

Tha chances are they will be different you need to re configure your pipe work

 

[Vic Spanner]

Or use 22mm pushfits if the imperial pipe will take it. I find you can get away with it sometimes.

I would`nt personaly, either compression with imperial olives or soldered fittings...PS What happens when it does`nt hold up,sometimes.

 

[powell30]

Agreed if they were not couplers between rigid sections. Most 3/4 pipes i have come across are usually tight on the pushfit, not loose but i accept the op will need to decide.......if in doubt....compression

 

[Biggles..]

Gledhill and newark still make cylinders next day and will put your tappings where you need them if you give them the measurements.

we find its normally cheaper to use these than go with centrecyl,albion,range cylinders

 

[Agile]

Its possible to buy solder couplers for 22 mm to 3/4" pipes.

Tony

 

[zetland76]

Thanks for all replies.

Unfortunately the feed and return to the coil are on 1" pipes. I know I can get Yorkshire fitting 1" to 28mm and then 28mm to 22mm (I've used this combination successfully) and a 22mm to 1" standard cylinder connector.
My worry is that the hot water feed from the boiler is gravity only (central heating is pumped). Would the restriction to 22mm causes the boiler to "hunt" more than usual?
Putting another pump or motorised valve in would be a bit of a b*lls ache. I'm getting more tempted to get the lot taken out and a combi installed.