![4″ To 14″ Diameter Spectacle Blinds For Process Piping 4″ To 14″ Diameter Spectacle Blinds For Process Piping](https://farm4.static.flickr.com/3113/4561055401_6971ecceab_o.jpg)
![4″ To 14″ Diameter Spectacle Blinds For Process Piping 4″ To 14″ Diameter Spectacle Blinds For Process Piping](https://farm5.static.flickr.com/4021/4561055403_e2e8baa78a.jpg)
Sweco Fab, Inc., a division of PT&P, fabricated a variety of six spectacle blinds that will be used for selective line isolation. The spectacle blinds are fabricated from A516-70 carbon steel with sizes ranging from 4″ to 14″ diameter and per ASME B16.48 code. The function of a spectacle blind is to allow a line to be in either full shut-off mode or full flow mode, depending on which side is being utilized. Spectacle blinds are a lower cost alternative to double block and bleed valves where OSHA requires positive isolation of piping segments for safety reasons.
Want to learn more about spectacle blinds? View a webinar about Sweco Fab today!