Float-operated valve

ISO 10628-2 (group 21, valves) / PIP PIC001

Drawn as

Bow-tie with a stem rising to a horizontal lever that ends in a circle (the float).

Meaning

Self-acting level valve (ball-cock): tank make-up water, diesel day tank fill, drain pots. No instrument loop; the float moves the valve directly.

Variants

Sometimes drawn with a dashed mechanical link from the valve to a float inside the tank
Tagged LCV (self-actuated level control valve)