The Atkinson bottom outlet kit (Atkinson inline filter valve) is to connect the tank to the pipe leading to the boiler. The kit comprises of isolation valve, 50-micron nylon filter, a 1″ BSP male tank fitting adaptor, a roll of PTFE tape, and a small container of Heldtite.
This inline kit includes practically everything you need to connect your heating oil tank to the bottom outlet supply pipe. The tank must be installed with at least enough clearance beneath the filter bowl to allow for maintenance. This includes room for a tray to collect any spillage.
The outlet is 3/8″ BSP Female and this comes supplied with a 3/8″ BSP Male to 10mm compression fitting as standard.