Ball valve P&ID symbol

Ball valve

ISO 10628-2 (group 21, valves) / PIP PIC001
Drawn as
Bow-tie with an open (white) circle at the centre, where the tips meet.
Meaning
Quarter-turn isolation valve: full-bore isolation, pigging lines, ESD and on/off duty when actuated. Small sizes have a lever, large ones a gear.
Variants
  • Full-bore vs reduced-bore is usually written as FB / RB next to the symbol
  • Trunnion vs floating is not shown, only on the valve datasheet
  • Look-alikes: filled dot = globe valve, small rectangle = plug valve
Tags
HV