Straight in line tap - 1/8" BSP thread into tank, 7/16" x 19TPI threaded outlet
Straight in line tap with 1/8" BSP male thread (under sealing flange) into tank and a 7/16" x 19TPI outlet thread, with a 60 degree seat for solder nut and nipple type fittings for 3/16" or 1/4" OD pipe only.