Copper Compression Reducing Union 15 mm x 3/4 Female BSP

Compression fitting - Female reducing adapter - Master Plumber®

Brass BSP Male Thread + Copper Fitting Straight Union Nut Socket

Copper 15mm x 3/4 Male Thread Union

The BSP value refers to the internal bore of the pipe, the physical thread size will be larger than this. 15mm COPPER COMPRESSION FITTING TO 3/4 BSP

3/4 BSP MALE COMPRESSION FITTING ADAPTOR CONNECTOR FOR 15mm

Compression Female Straight 15mm x 1/2 Inch - Ray Grahams DIY Store

Reducing Coupling 15mm x 10mm Compression WRAS Approved

Pipe Fitting Fit Tube OD 15mm-35mm Brass Compression Elbow

Flomasta Compression Straight Tap Connector 15mm x 3/4 - Screwfix

B-Press Water Male Union 15mm x 15mm BSPM from Reece

Copper 15mm x 3/4 Female Thread Union

A Complete Guide to Pipe Fittings and How to Use Them to Connect