http://www.heatingelementcompany.co.uk/ ... roduct=231
Advantages being mainly 2 small holes to make in HLT or boiler (instead of 1 large one a la kettle element).
Disadvantages that I could see were i) eye-watering cost; ii) need to fit a project box outside to protect the wiring connections, and iii) problem with earthing.
Meandering about online (as one does!), I came across these:
http://www.unifit.co.uk/products/80011/ ... -universal
http://www.conrad-uk.com/ce/en/product/ ... .ASTPCEN22
I took the plunge and ordered both, the last item to arrive being the element, which came today (fiver delivery charge). Unfortunately (?) I had my HLT in use for a brewday. On finishing, I replaced my (plastic) HLT's element with the pigtail, locknut, and its original shroud. Here's a pic:
I've not had time to test beyond cold water (which isn't leaking
) That's no bad thing, as the locknut's only finger tight (don't have a big enough spanner 
) I swapped-out the heavy duty washer (about 3mm wide) that came with the pigtail for a standard element washer to ensure the shroud fittedStrikes me that these would be suitable for a boiler or HLT. I'm sure shiny boilers etc will have thinner walls than my plastic HLT, so the locknut can get a good grip and still leave enough thread for the shroud. Still needs a big hole making, but earthing and protecting the connections from spills etc is sorted
Now, where's my screwdriver and spare plugs?...Cheers, Chris
