Symbol 0028 from ISO 7000 - Title/Meaning: Filling 
Function/description: To indicate the filling of a vessel or container by any type of liquid or produce (for example, filling of oil tanks, filling ink reservoirs, filling grain hoppers).
Own work using: iso.org/obp/graphics/grs/be4fbcb4-8e0b-4bea-a596-a66fea6e0027 200.png
Vectorization:  Mrmw