John C Daley

You may need to use an adaptor to join the old to the new pipes.
Tims suggstion may also be a solution. to join old and new pipes off off sixs.

Treadle lathes normally hold the work between centres , the drive end has the drive 'dogs',  and one end has the 'loose' centre.

PHIL, that is a fabulous trick with the gate valve, I have broken a few.
Rico, burst flexible pipes is a $A40 million a year problem in Australia, with the average repair cost of $A40,000.
Carpets, flooring etc.
I have seen them put inside walls!
They are usually marked replace every 5 or 10 years!
I do not know why they are allowed to be used at all.

Falcon from the USA makes unbreakable flexible stainless steel pipes.

Here are some images of the 'flood stops'.
One style is simply a small tap and the other smaller unit is a fllod top unit.
GENERALLY THESE FLEXIBLE UNITS DONT LAST BEYOND 10 YEARS.
SOME ARE MARKKED FOR REPLACEMENT EARLIER.
THEY ARE A DISGRACE, BUT  'FALCON' SUPPLY A FLEXIBLE 100% STAINLESS STEEL FLEXIBLE UNIT WHICH WILL NOT BURST.

Install burst stops which close when flow exceeds a set level.

Do you have exterior shots, it looks good.

In Melbourne, Australia it is converted into sand and reused in concrete.