SPECTACLE BLIND
http://data.posccaesar.org/rdl/RDS422324
<http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003#ClassOfInanimatePhysicalObject>
2006.06.15
u83130
An 'artefact' that consists of two discs with equal thickness and outer diameter connected with a flat bar. One of the discs has a hole, while the other disc is without hole.
RDS422324
SPECTACLE BLIND
SPECTACLE BLIND
Qualified
The first is installed as a restriction orifice between pipe flanges during normal operation, and the latter when blocking is required.