Pagoda connector 6 8 10 12 14mm hose barb connector, BSP hose tail thread 1/8 1/4 3/8 1/2 brass water pipe fittings
https://www.vogueparade.com/shopping/EN/200282142/1/1005001330161334/pagoda-connector-6-8-10-12-14mm-hose-barb-connector-bsp-hose-tail-thread-18-14-38-12-brass-water-pipe-fittings//