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Post by Telemachus on Oct 7, 2021 9:22:06 GMT
Oh and if you do find it, it will be quite hard to remove the blanking plate due to limescale etc. The trick to get it moving initially is to keep the calorifier full and pressurised. That way when you apply force to the blanking place, you much reduce the risk of creasing the rather thin copper walls. Once you have got it moving a bit should you depressurise it, obviously.
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Post by Isambard Kingdom Brunel on Oct 7, 2021 9:33:58 GMT
If there is no boss fitted, Essex flange may do it?
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Post by Isambard Kingdom Brunel on Oct 7, 2021 9:37:14 GMT
Just been looking at a video on how to instal an Essex flange and I was right ......
you use them to add an extra smaller drain point but you have to have an immersion boss already fitted to do it
Not so, it can all be done from the outside, small or large boss makes no odds.
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Post by Deleted on Oct 7, 2021 9:46:22 GMT
Just been looking at a video on how to instal an Essex flange and I was right ......
you use them to add an extra smaller drain point but you have to have an immersion boss already fitted to do it Not so, it can all be done from the outside, small or large boss makes no odds. It has to be that you can fit them through their own hole, otherwise why would they sell Essex flanges for immersion heaters if you needed a bigger hole you could never fit them.
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Post by Deleted on Oct 7, 2021 9:49:11 GMT
I love the words Essex Flange it has so many connotations 😯 There is also a Surrey Flange. Is it posher than an Essex one?
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Post by Deleted on Oct 7, 2021 10:19:05 GMT
Oh and if you do find it, it will be quite hard to remove the blanking plate due to limescale etc. The trick to get it moving initially is to keep the calorifier full and pressurised. That way when you apply force to the blanking place, you much reduce the risk of creasing the rather thin copper walls. Once you have got it moving a bit should you depressurise it, obviously. I was wondering about avoiding all that by just plugging a 240v vehicle preheater unit into the engine calorifier coil Seems to be rather a simple solution.
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Post by Deleted on Oct 7, 2021 11:18:04 GMT
Just buy a few kettles, much easier.
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Post by JohnV on Oct 7, 2021 12:04:04 GMT
Just been looking at a video on how to instal an Essex flange and I was right ......
you use them to add an extra smaller drain point but you have to have an immersion boss already fitted to do it
Not so, it can all be done from the outside, small or large boss makes no odds.
Ah !!! the only Essex flanges I have ever seen are for 15mm or 22mm outlets and they have to have a bigger hole somewhere in the tank to fit them !!!
Never ever seen the 2 1/4 " ones before .... just been and googled them
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Post by Isambard Kingdom Brunel on Oct 7, 2021 12:15:32 GMT
Not so, it can all be done from the outside, small or large boss makes no odds. It has to be that you can fit them through their own hole, otherwise why would they sell Essex flanges for immersion heaters if you needed a bigger hole you could never fit them. Bang on. Its all done with a split internal stainless washer that you wind into the hole whilst holding it on a wire "T" Then the ears on the fitting engage the washer, all the rest of the bits thread on from outside and the nut pulls it all together. There are Essex flanges for curved side and for dome fitting. If its a copper cylinder brass boss can be soldered and wiped in, cheaper. But you need the skill to do it.
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