[KS Cleaning]

I have been looking at the post re immersion heaters where you put up photos of how you installed the immersion. I am having mine done just now but the person installing it has just been on the phone saying that the part that goes inside the tank needs to have a longer thread as by the time he pushes it through from the inside of the tank, there is not enough thread showing due to the thickness of the tank and the sealing washer that came with the flange. I would imagine all tanks are about the same thickness, did you have any problems with this? I have bumped the post where you posted the photos. Cheers

[ChumBucket]

Do you have the mechanical flange or just a flange nut to screw onto the element?

I have the mechanical flange, there isn't masses of thread that protrudes through but plenty to get a good catch on.

[KS Cleaning]

Do you have the mechanical flange or just a flange nut to screw onto the element?

I have the mechanical flange, there isn't masses of thread that protrudes through but plenty to get a good catch on.

Aye, it's the mechanical flange av got too, am thinkin that it's maybe because he can't get enough pressure on it as it's an upright tank and it has to go down low to get under the baffles. Al go along to see him in the morning armed with ma laptop and show him the photos of how you done yours.  Thanks for the quick reply 

[ChumBucket]

You might have to widen the hole slightly with some heavy sand paper or a file, depending what size hole saw you've used. I know the one I use could do with being 1mm bigger as I have to do just this. I don't use the washer on the actual flange, all I use is PTFE *paste* (not tape) on the flange threads- I don't use any sealer, silicone or anything else & have never leaked a drop. I do use the washer between the actual element & the flange though. PTFE paste is available from any plumbing merchants & usually the likes of B&Q, Homebase etc.

[KS Cleaning]

You might have to widen the hole slightly with some heavy sand paper or a file, depending what size hole saw you've used. I know the one I use could do with being 1mm bigger as I have to do just this. I don't use the washer on the actual flange, all I use is PTFE *paste* (not tape) on the flange threads- I don't use any sealer, silicone or anything else & have never leaked a drop. I do use the washer between the actual element & the flange though. PTFE paste is available from any plumbing merchants & usually the likes of B&Q, Homebase etc.

Thanks mate, I will pass this info on. I have got all the electrics done in ma garage, just the finishing touches now, should be good to go soon, just in time for.......spring 

[ChumBucket]

If you look closely at the flange nut it has three raised nipples on it's closing face. As you tighten the flange these nipples usually sink into the plastic tank wall & create a fix meaning you don't require to hold the nut in place on the inside while tightening the flange on the outside. So long as you can get just enough thread through the tank wall to get a catch you'll be ok as at least another couple of mm will pull through as you tighten.

[KS Cleaning]

Am goin to see him in the mornin, al pass on your advice and al let you know how a get on

[KS Cleaning]

That's it been fitted, without the washer ( not been filled yet so fingers and everything else crossed). Problem was the thickness of the tank was 9mm.

[ChumBucket]

Let me know if it leaks, neither of mine ever have but it wouldn't be a problem to cure a leak if yours initially did. The best solution IMO is PTFE paste on the threads & tighten the thing up as hard as you possibly can!! I use a great big adjustable wrench on mine!!

[ChumBucket]

It's the mechanical flange I'm referring to above- the element can have PTFE tape & the washer on it & only requires a normal level of tightening up.

[KS Cleaning]

Put water in now and no leaks Thanks for all the great advice you have given, not only on the flange but all the electrical stuff as well If it all goes tits up al know who to blame

[ChumBucket]

Put water in now and no leaks Thanks for all the great advice you have given, not only on the flange but all the electrical stuff as well If it all goes tits up al know who to blame

No worries. If it all goes Pete Tong you'll have to guess my new user name first!!

Another thing, you can buy blanking caps for the flange if you ever want to remove the immersion to sell the tank etc.

[KS Cleaning]

Put water in now and no leaks Thanks for all the great advice you have given, not only on the flange but all the electrical stuff as well If it all goes tits up al know who to blame

No worries. If it all goes Pete Tong you'll have to guess my new user name first!!

Another thing, you can buy blanking caps for the flange if you ever want to remove the immersion to sell the tank etc.

Al bear that in mind about the blanking cap winpro ....ehh a mean Chumbucket