Or is it a diaphragm or gasket ?
[url= http://farm8.staticflickr.com/7176/6917165877_70625ddede_b.jp g" target="_blank">
[url= http://www.flickr.com/photos/58162507@N07/6917165877/ ]Flange[/url] by [url= http://www.flickr.com/people/58162507@N07/ ]SGMTB[/url], on Flickr
and for all the pipe experts... is the stainless steel thing a spare ?
[url= http://farm8.staticflickr.com/7210/6917177503_8ce8fb1a0e_b.jp g" target="_blank">
[url= http://www.flickr.com/photos/58162507@N07/6917177503/ ]Emergency Flange[/url] by [url= http://www.flickr.com/people/58162507@N07/ ]SGMTB[/url], on Flickr
It's part of the sighting mechanism - that's a gun barrel.
A diaphragm would have, well, a diaphragm; and would essentially block the pipe. That looks like a flange gasket.
Looks to me like a flange , there might be a blanking plate fitted in the pipe at present and the flange replaces it when it's not required
to be blanked.
yup, as nicholas says. Pipe must be shut in.
EDIT: btw the flanges are the bits at the end of the two pipes.
So it's a blanking plate 🙂
I reckon also it's a WMD of some kind.
[geek]It's a spectacle blind, to give it it's proper name, used to shut in a pipe and also as a visual cue to an operator that a pipe has ben shut in.[/geek]
Its called a spectacle plate.
There are a good half dozen flanges in those pictures. Not a gusset in sight though.
Its called a spectacle plate.
Looks more like a monocle plate to me!
Flange geeks.
[b]AWSUM[/b]
Solved:
"spectacle plate"
Solved:
"spectacle plate" also "A spectacle blind - also known as a figure-8 blind
http://wiki.answers.com/Q/What_is_a_spectacle_blind_flange