isolation valve for1 inch stainless steel pipe

[Teka]

Between the cold water storage tank in the loft and first-floor airing cupboard is stainless steel pipe installed in 1969

There is no isolating valve near the tank.

I wonder what are my options?

Appreciate all help

 

[ShaunCorbs]

Will be true weld not stainless normally compression fittings

 

[steadyon]

1. Probably better to replace with 28 mm copper.
2. You will need to drain, or very securely "bung" the cold water storage cistern.
3. You will need to drain the hot water cylinder:
3a. There should be a drain off point, normally where the cold feed pipe goes into the hot water cylinder.
3b. If there is no drain off point, or it doesn't work (quite likely), then undo the top hot water connection and syphon the contents out of the cylinder from there.

 

[Teka]

Thanks steadyon and Shauncorbs

I will plan to replace in the future