Microbore lockshield valve

[mozzam]

Hi,

Need to find a replacement lockshield valve that fits 10mm microbore (picture attached).

Diameters:
Valve body before bottom union nut: 13.5mm
Bottom union nut: 20mm (external)
Microbore pipe: 10mm
Worcester combi boiler system

The rest of the pipework in the house to the radiator is 15mm compression fittings so I hope the pictured is the same.

I have no idea what the current situation is with the microbore to what I think is a compression fitting - adapters/reducers within??

Could I get any old 15mm lockshield valve and pair with this reducer/coupler?

https://www.screwfix.com/p/flomasta-brass-compression-reducing-internal-coupler-15mm-x-10mm/70435?tc=NB3&gad_source=1&gclid=Cj0KCQiAo5u6BhDJARIsAAVoDWsE8W2d_yBYUCYSYqip13QtOKYAHtl-gz99Le6h4V9UT9Uvbt0qlsoaArs6EALw_wcB&gclsrc=aw.ds

If I've missed any info, let me know and thanks!