0 port brass fitting for booster pump assemblies, to accommodate a pressure switch, pressure gauge and expansion vessel. Brass 0 way fitting with 0" male, 0x 0" female, 0/0" male 0/0" female BSP threads for connecting the pressure switch and pressure gauge to the outlet of a pump. A 0" A0 0/0" E 00 mm C 00 mm D 00 mm