Changing/fixing a bunch of seized imperial and metric valves

[king of pipes]

Check to see if you need imperial 3/4 " olives usually a indication on the stopcock body , 1/2 " and 15mm are compatible . Regards kop

 

[oscarwplumbing]

Have successfully change the first one. Threads from the previous valve were compatible with the new valve so I just swapped it out, and used the olives that were already on the pipe. Hopefully that's ok. I added lots of Fernox jointing compound to protect the threads. Seems completely watertight so far!

Now I can isolate the tanks in the loft which will be very useful when changing the others. Thanks again!