Filter (general)

ISO 10628-2 (groups 6, 8 and 28, filters, separators, agitators) / PIP PIC001 (group 6)

Drawn as

A vessel outline divided by a dashed line (the filter medium), with inlet on one side and outlet on the other.

Meaning

Any filter: liquid filter, gas filter, bag filter. If cartridges are drawn it is cartridge-filter; with a coalescing and vane section it is filter-separator.

Variants

Some legends draw a rectangle with a dashed diagonal
Duplex filters are two such vessels with changeover valves