JG Speedfit Push-fit Washing machine Valve (Dia)15mm x ¾"

Had to buy two of these taps (which are very good), but what I really needed were: 15mm Speedfit female to 3/4" BSP parallel MALE thread. ie a 15mm female to a 3/4" male concentric adaptor with a flat sealing face, not compression.
I've looked through the SF items on the B&Q web site, but still find very little male threaded fittings. There is definitely a need for these fittings, the above tap is too expensive.....could be the reason why there's no male adaptors?