Q. Is a gasket required for a spectacle blind?

Answer

Yes, Spectacle blinds are made from a single metal piece that is machined to fit between two pipe flanges and feature an extra gasket during installation. Likewise, the blind size and piping class utilized will dictate whether or not the bolts need to be stretched. Spectacle blind thickness is determined by line pressure and pipe size. A device that serves as a positive shut-off and is typically mounted near or in conjunction with a valve. Their job is to block the flow of liquid from a pipeline into a vessel by mistake. Unlike a valve, which may be opened and closed, a blind can remain in place for an extended period of time before needing to be replaced.