This brass poly to copper connector is used to connect an MDPE water supply pipe to a length of copper tube.Pipe liners (or stiffeners as they are sometimes called) should always be used on the MDPE side of this fitting.
MDPE Copper Adaptor - 20mm x 15mm Brass
MDPE Copper Adaptor - 25mm x 15mm Brass
MDPE to BSP Adaptor - 25mm x 3/4andquot; BSP Male
MDPE to BSP Adaptor - 63mm x 1 1/4andquot; BSP Male
MDPE to BSP Adaptor - 32mm x 1andquot; BSP Male
MDPE to BSP Adaptor - 63mm x 2andquot; BSP Female