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To do this say between two elbows do you measure between were the thread ends internally on both elbows?

Reverse circulation, as in when the pump is off if on a timer. The secondary pipework could draw water out of the cylinder, if no check valve?

If not fitted

Thanks, sorry I ment what could the issue be if a check valve wasn't fit between the pump and the cylinder.

Thank you so if there wasn't a check valve between the pump and the cylinder. What would/could be the outcome if the pump was on a timer?

Thanks so it does pump check valve then cylinder?

If fitting a secondary return on a cylinder that has a secondary return connection. I understand you just need to fit a pump pointing back to the cylinder? No check valve is needed like when you tee it in to the cold connection? Someone implied to me you needed one when going in to the...

Thanks it's 15mm pipework. To the rads. I had a bad time filling on an open vented system with 8mm microbore. Does the microbore make filling harder?

Thanks I'm altering the pipework so will need to solder unless I crimp. So don't no if bunging the tank would work.. I do have a tank bung kit.

I have some rads to swap on a vented system and know they can be a pain refilling. It was originally going to be one rad so I was looking at freezing it to alter the pipework. I have and electrical freezer. But it's going to be 2 rads now. Both rads down stairs. Would you entertain freezing or...

Thanks is 2 or 3 months acceptable to complete it? Would you think?

Thanks, did you find it worth it?

How did you find it please? Also how long did it take to complete?

Hi has anyone done the heat geeks online training course? I'm thinking of doing it

How would you then clip the copper? Or don't and just clip plastic?

Have you seen before? Slit the plastic?

Could exit and go on to something like that?

I could run down the wall in copper but would be at risk of getting stolen

Thanks there is a waste pipe near by 40mm pushfit. But takes 2 sinks. If going into the waste it needs to be it's own leg no other appliances connected

Thank you it goes external at the moment but is high level and just stick out. Hate following rough plumbers . Best way of making this safe?