SELF OPERATING VALVE
http://data.posccaesar.org/rdl/RDS7018938
<http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003#ClassOfInanimatePhysicalObject>
2005.12.21
u82237
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.
RDS7018938
SELF OPERATING VALVE
SELF OPERATING VALVE
Qualified