Sweco Fab, Inc., a Division of Piping Technology & Products, Inc. Fabricated 4" to 14" Diameter Spectacle Blinds for Process Piping. (PT&P Ref#01305-F1, L.A.) 11/10/2009

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.