SELF OPERATING VALVE
type: ClassOfInanimatePhysicalObject
has creation date: 2005.12.21
has creator: u82237
has definition: A valve that includes a means of operation (e.g. spring / gravity / fluid pressure / counter balance), and is not depending on an external source of energy.
has designation: SELF OPERATING VALVE
has id PCA: RDS7018938
has status: Qualified