This is the current setup at the top of our hot water cylinder:
I'm planning on fitting one of these tomorrow, which has a 1" bsp connection, male, or female with adaptor.
Is it likely I will find a 1" bsp female threaded hole at the top of the cylinder once all the old stuff has been removed?
Also, will I need to be cautious of any parts I can't see falling into the tank, like a male part of a coupler or something?
Thanks.