[nathankaye]

Thanks for previous help on this matter.
Listening/reading some chaps on here who have gone with an immersion heater in tank, it sounded quite easy untill ive phoned a company and there asking all sorts of questions.
I enquired of a 14" 2kw heater that im fitting inside a 500ltr plastic upright tank that stands tall, so cant just dangle my arm in to fit near bottom of tank and from advice on here im fitting with a mechanical flange. But the company is saying that i need something to secure the flange onto my tank to sort this and something else and something else. Not overly mechanical minded so not sure on jorgan they mentioned.
Ive enquired with heatrod ltd in manchester. So wondering what did you chaps order from this company.
(I thought heater inside tank, push end fitting from inside tank thru hole and secure with mechanical flange and some sealant if required. Am i also completely wrong with this understanding)?
Cheers for any more advice on matter

[Smurf]

This may help? https://www.youtube.com/watch?v=QNeHSiVhfS4

If your arm don't reach the you will have to figure out a way to get the mechanical flange nut, washer and sealant onto it and tighten it (from the outside) by maybe using the spanner gaffer tapped/cable tied etc to a length of wood held in place with some gaffer tape. Then once done the spanner should be able to pull away from the mechanical flange nut. Well in theory that should work… maybe 

After saying that might be easier to buy another tank that your arm can reach into to fit properly before you cut the hole lol
Then sell the old one 

[Dave Willis]

Mechanical flange, the one from toolstation has little bumps that bite into the plastic enough not to need any spanner on the inside. Lower the nut on a wire hook and pull it through the drilled hole from outside.

[Dave Willis]

2kw gives pleasantly warm water all day. 3kw would be better but too much draw on basic wiring.

[dave f]

you cant beat a good flange

[Smurf]

you cant beat a good flange

Indeed...tighter the fit the better.

[nathankaye]

you cant beat a good flange

Indeed...tighter the fit the better.

Especially when its not mechanical

[Smurf]

Mechanical flange, the one from toolstation has little bumps that bite into the plastic enough not to need any spanner on the inside. Lower the nut on a wire hook and pull it through the drilled hole from outside.

Tip of the day...nice one 

[Dave Willis]

Don't bother with an ordinary flange nut, the tank is too thick you need the mechanical flange which is made in two parts.