Ian it may be wise to phone a local plumber and explain what you want to do, pay him £30 to come and look at your system and point you in the right direction.
I have done this for people in the past, I like it when people try to help themselves rather than just get someone in for every little job.
Then you have someone who’s seen it on your side if you get stuck ( no reason you will), and if the worst comes to the worst they can sort it for you.
Good luck
I have done this for people in the past, I like it when people try to help themselves rather than just get someone in for every little job.
Then you have someone who’s seen it on your side if you get stuck ( no reason you will), and if the worst comes to the worst they can sort it for you.
Good luck