Plumbing question
Author
Discussion

dba7108

Original Poster:

675 posts

189 months

Sunday 28th September 2025
quotequote all
I have bought a 15mm to 10mm reducing valve for a radiator. When i tighten it up it clicks the goes loose. What am I doing wrong. The olive seems tight.

Danns

399 posts

80 months

Sunday 28th September 2025
quotequote all
Without seeing it

Sounds cross (which would be rather tricky) or stripped thread to me.

Not that I ve ever had such happen to comment.

ETA - or it’s an oddly close match on the 15 and 10mm ends and you’ve got the 15mm nut on the 10mm end?