Replacing radiator without draining down?

[Burger]

Would you not need to isolate all other rads to drain only the one as they are all connected? Now I am confused lol

I have never had to, isolate he flow and return under the boiler, should create a vacuum, plus it’s only for vertical pipes 😉

 

[Ben-gee]

Just open valve and catch the water , shouldn’t be much, then you can cut/ solder whatever you want !
I do this on open vented too just put a 22mm speedfit cap on the vent and a carrot in the feed!
Honestly this is pretty basic stuff i thought we all did.

 

[MC78]

Just open valve and catch the water , shouldn’t be much, then you can cut/ solder whatever you want !
I do this on open vented too just put a 22mm speedfit cap on the vent and a carrot in the feed!
Honestly this is pretty basic stuff i thought we all did.

Well I would rather be safe than sorry, especially on a sealed system.

 

[Burger]

Well I would rather be safe than sorry, especially on a sealed system.

Ok, up to you. Just don’t forget to add some inhibitor after all that water loss and introduction of fresh aerated water. 🙄

 

[Ben-gee]

I always use this method if possible, ever since spending hours trying to refill a badly designed system - running round venting and backfilling with mains etc.
In terms of caution, I always have the appropriate sized speedfit cap nearby in case it lets go, and the trusty Charles hoover. Although only needed once, a faulty aav I hadn’t found in back of airing cupboard, this one I drained.

 

[SimonG]

but if you are wanting to change the whole of the lockshield and tvr components then draining the system is advised.

This is the bit I disagreed with. No need at all to drain a pressurised system for a job like this.

 

[king of pipes]

Save yourself alot of grief drain down replace the radiator and fit the new valves . Kop

 

[SimonG]

Would you not need to isolate all other rads to drain only the one as they are all connected? Now I am confused lol

Sums up your lack of knowledge. Unless you know what you are doing then stop making yourself look like a tit by commenting on stuff you obviously know sweet fa about.

 

[Burger]

FYI:

Just changed a 10mm trv today. In and out in approx 20 mins, and that includes cutting old olive off as new nut doesn’t marry up to existing. 😎

 

[Harvest Fields]

FYI:

Just changed a 10mm trv today. In and out in approx 20 mins, and that includes cutting old olive off as new nut doesn’t marry up to existing. 😎

Well done you. Give yourself a giant pat on the back.

 

[Michael1960]

Well done you. Give yourself a giant pat on the back.

Meaning?

 

[Harvest Fields]

Meaning?

Meaning, well done him. For changing a 10mm valve in approx 20 mins with cutting off the olive.

 

[Michael1960]

Well done you. Give yourself a giant pat on the back.

Meaning?

Meaning, well done him. For changing a 10mm valve in approx 20 mins with cutting off the olive.

Pat on the back then

 

[Harvest Fields]

Meaning?

Pat on the back then

Yep, as I said😉