Spacer VS Spectacle blind without blind
Spacer VS Spectacle blind without blind
(OP)
Hi.
What is a difference between spacer and Spectacle blind without blind (blind removed), as attached in following picture:
Why we use a sapcer in pipeline? I think the process wise usage of these two equipment is the same.
https://res.cloudinary.com/engineering-com/image/upload/v1476962909/tips/Spacer_wfmobl.bmp
What is a difference between spacer and Spectacle blind without blind (blind removed), as attached in following picture:
Why we use a sapcer in pipeline? I think the process wise usage of these two equipment is the same.
https://res.cloudinary.com/engineering-com/image/upload/v1476962909/tips/Spacer_wfmobl.bmp





RE: Spacer VS Spectacle blind without blind
RE: Spacer VS Spectacle blind without blind
Pressure rating is a factor here as the higher the Class the bigger/thicker/heavier the components will be. Typically for Class 150 spades/spacers will be used from NPS 14 and above and the higher the class lower NPS.
RE: Spacer VS Spectacle blind without blind
In practice - no difference, but without some sort of context it's difficult to say.
I can only surmise that the graphic is used when comparing one state ( piping with a blind installed) to a different state where the blind is removed, but a spacer inserted in its place. or a part of a sequence of actions or actions required to move from an isolated case to a normal operational state.
the two boxes I assume you highlighted are NOT a spectacle blind, but two separate bits of metal. It looks very similar, but if you look closely, the spacer has a little line coming from it at the top, the spectacle blind doesn't....
Why do you use a spacer? So that when you want to install a blind, the gap between the flanges is there and you don't have to force pipe apart to insert it or close up the space when you remove it.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Spacer VS Spectacle blind without blind
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: Spacer VS Spectacle blind without blind
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Spacer VS Spectacle blind without blind
While the latter symbology indicates that a spec blind is normally at this flange.
RE: Spacer VS Spectacle blind without blind
RE: Spacer VS Spectacle blind without blind
Sometimes its possible to do all the right things and still get bad results
RE: Spacer VS Spectacle blind without blind
I trust this is sufficient.
RE: Spacer VS Spectacle blind without blind
RE: Spacer VS Spectacle blind without blind