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Have radiator threads changed size?
Hi All,
We are coming to the end of having the builders in (I dont plan to ever do it again!). The latest is, we asked him to have the plumber fit thermostic valves to some of our existing radiators..... Plumber said it cant be done, as our rads are 3/4 whereas the valves are 1/2. Is he right? Or is it just a question of unscrewing the tail from the rad and screwing in one to take the half inch valve? TIA Chris |
Have radiator threads changed size?
On 21/12/2017 15:59, wrote:
Hi All, We are coming to the end of having the builders in (I dont plan to ever do it again!). The latest is, we asked him to have the plumber fit thermostic valves to some of our existing radiators..... Plumber said it cant be done, as our rads are 3/4 whereas the valves are 1/2. Is he right? Or is it just a question of unscrewing the tail from the rad and screwing in one to take the half inch valve? https://www.toolstation.com/shop/Plu...on+Bush/p98490 -- mailto : news {at} admac {dot} myzen {dot} co {dot} uk |
Have radiator threads changed size?
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Have radiator threads changed size?
Thanks everyone!
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Have radiator threads changed size?
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Have radiator threads changed size?
On 21/12/2017 15:59, wrote:
Hi All, We are coming to the end of having the builders in (I dont plan to ever do it again!). The latest is, we asked him to have the plumber fit thermostic valves to some of our existing radiators..... Plumber said it cant be done, as our rads are 3/4 whereas the valves are 1/2. Is he right? Or is it just a question of unscrewing the tail from the rad and screwing in one to take the half inch valve? The fitting in the rad for the tails is the same, even if many modern TRVs use a stub of 15mm pipe that goes in the rad socket, and the valve makes a compression fitting onto it rather than the traditional cone joint. However, as you rightly suggest, there is nothing stopping you removing the tail from the rad an using the one that comes with the TRV. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
Have radiator threads changed size?
On 21/12/2017 22:24, Roger Mills wrote:
On 21/12/2017 15:59, wrote: Hi All, We are coming to the end of having the builders in (I dont plan to ever do it again!). The latest is, we asked him to have the plumber fit thermostic valves to some of our existing radiators..... Plumber said it cant be done, as our rads are 3/4 whereas the valves are 1/2. Is he right? Or is it just a question of unscrewing the tail from the rad and screwing in one to take the half inch valve? TIA Chris Sack the plumber! Of course it can be done. If the ports in the radiator are *truly* 3/4"BSP, you can get bushes which screw into those, with a 1/2" BSP thread on the inside into which you can screw a standard radiator tail. But the bloke sounds so clueless that I wonder whether they *are* 3/4"BSP - bearing in mind that the thread on a 1/2" BSP fitting is approx. 3/4" in diameter. It's very unusual these days to find radiators with anything other than 1/2" BSP threads. +1 about sacking the plumber. But there are two different thread pitches of very similar diameter found on the "copper" side of radiator valves, which can be confusing. |
Have radiator threads changed size?
On 22/12/2017 20:13, newshound wrote:
On 21/12/2017 22:24, Roger Mills wrote: On 21/12/2017 15:59, wrote: Hi All, We are coming to the end of having the builders in (I dont plan to ever do it again!). The latest is, we asked him to have the plumber fit thermostic valves to some of our existing radiators..... Plumber said it cant be done, as our rads are 3/4 whereas the valves are 1/2. Is he right? Or is it just a question of unscrewing the tail from the rad and screwing in one to take the half inch valve? TIA Chris Sack the plumber! Of course it can be done. If the ports in the radiator are *truly* 3/4"BSP, you can get bushes which screw into those, with a 1/2" BSP thread on the inside into which you can screw a standard radiator tail. But the bloke sounds so clueless that I wonder whether they *are* 3/4"BSP - bearing in mind that the thread on a 1/2" BSP fitting is approx. 3/4" in diameter. It's very unusual these days to find radiators with anything other than 1/2" BSP threads. +1 about sacking the plumber. But there are two different thread pitches of very similar diameter found on the "copper" side of radiator valves, which can be confusing. I've certainly found different thread pitches used on compression joints for connecting radiator valves to the external pipework - which I think is waht you are referring to. But never on the tails themselves - they are always 1/2" BSP. -- Cheers, Roger ____________ Please reply to Newsgroup. Whilst email address is valid, it is seldom checked. |
Have radiator threads changed size?
If a plumber does't have it in the van it can't be done! |
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