Can radiator valves be interchanged?

What is the purpose of radiator valves?

When is the best time to bleed heated towel rails?

How often should you bleed heated towel rails?

How do you know if your bleed valve is broken?

Do heated towel rails have a bleed valve?

What size are standard rad tails?

What are radiator tails?

What is a radiator tail?

What are rad tails?

What is a rad tail?

How do you maintain TRVs in the summer?