Spacer
Description:
The spacer (a ring-shaped plate) is used when the line needs to be open and the spade (a solid circular shaped plate) is installed when the line needs to be blocked or closed.
Feature:
Spacer Rings, also known as piping spacers, are used between flanges to correct gaps or misalignment. Spacer rings are sometimes tapered and are almost always custom machined per very specific measurements.