IfcFilterTypeEnum

AIRPARTICLEFILTER: An air filter removing particulates from air.
ODORFILTER: An air filter used to remove odors from air.
OILFILTER: A filter used to remove particulates in from oil.
STRAINER: A filter used to remove particulates from a fluid.
WATERFILTER: A filter used to remove particulates from water.
USERDEFINED: User-defined filter type.
NOTDEFINED: Undefined filter type.

IfcFilterTypeEnum

Definition from IAI: This enumeration defines the various types of filter typically used within building services distribution systems:

HISTORY: New enumeration in IFC R2x.

EXPRESS specification:

TYPE IfcFilterTypeEnum = ENUMERATION OF

(	AIRPARTICLEFILTER, ODORFILTER, OILFILTER, STRAINER, WATERFILTER, USERDEFINED, NOTDEFINED);

END_TYPE;