Freeze It Spray, Blue, 400 ml

I had to renew 6 radiator valves, and to be honest I was not looking forward to it.It wasn't just a simple matter as I had to renew ALL the fittings, including the one that actually screws into the radiator itself, requiring a special 'stepped' tool to get it off, not just a ordinary spanner.I fist made sure thet the valve I was removing was fully off and also the 'Lock Shield' valve at the other end of the radiator was shut too.I then carefully cracked open the nut nearest the radiator on the valve, draining the water into an old dish until the radiator was empty, this is actually the longest part of the procedure, especially if it is a big radiator.Now the clever bit, this is where the Freeze It Spray Kit comes in !I then fitted the blue 'thermal coat' from the kit round the pipe. you can shorten it a 'little' is you are stuck for room, but not too much !Then you slot the closing strip over the two loose ends, thus completing the jacket.Finally tighten the enclosed cable tie round the bottom of the jacket, as tight as possible, I used pliers and pulled as hard as I could.Now it is time to apply the spray... I pushed the small tube into the nozzle VERY firmly (you DO NOT want this tube coming out as you are using the spray !) and pushed the tube as far into the jacket as I could, you then need to squirt the liquid into the jacket.. I did it in small bursts, until you have used about 1/2 the content of the canister, you can weigh the canister to help if you so wish, but I just guessed !I then left it to fully freeze the water in the pipe by forming an 'ice plug' this is about 3-2 minutes.Make sure you have everything to hand though, so you don't have to go to the shed for 5 minutes to find a spanner or saw !They say it can freeze the pipe for up to about 15-20 minutes, but completed changing this valve in under 5 minutes.When I thought it was frozen I carefully opened the old valve, it was on 1 - Closed, I opened it slowly to 6, which is fully open... and there should be no water coming out, meaning the ice plug HAS formed and holding the water back.I then took my circular pipe cutter, but it on the pipe just below the bottom nut and gave it a full turn to completely cut the pipe (you can use a hacksaw and then file the end of the pipe nice and clean, but the proper cutter does the job much quicker and cleaner) the old valve is completely severed now, and it is time to fit the new valve.The new valve should be completely assembled as per the manufacturers instructions (these do vary) and the valve CLOSED, one again this is usually "1". then it is just a matter on sliding the nut, then the bronze or copper olive over the pipe, putting the pipe into the bottom of the valve, then firstly "hand tightening" the nut onto the bottom of the valve (this prevents "cross threading" the nut which can happen easily if you use a spanner to straight away, which you definitely don't want to happen... trust me... then you can use a spanner to tighten the nut fully.At this point all the tricky part is done, and you can relax, as I say it should take no more than 5 minutes, maybe 8 minutes on your first one though.When that is done you can reconnect the new valve to the radiator.You can then remove the thermal jacket by cutting the cable tie, and it will then thaw out the ice plug pretty quickly, I would wait 10 minutes though before doing the next part, have a cup of tea or coffee first !You can then open the Lock Shield and put the new valve to No 6 (fully open) and visually check for leaks.If all is fine you can then bleed the radiator, it will take some time to fill up though and you may hear some funny noises , but don't worry.. and then the job is done !Set the system running (turn the heating on !) and once again check for leaks.. all should be well though.If you are unsure about using this product or changing a valve please use a professional.. nothing worse than a flooded house !Without the kit though it would mean bleeding the whole system and refilling it.. a daunting task.I replaced my 6 valves one at a time, with at least a day between each one, just to make sure everything was 100% OK, I could have done then all in one day I suppose but why rush !

Does what it says on the tin.