PTFE and PFA lined Spectacle Blinds for use with acids

A more permanent form of blanking spade, spectacle blinds are built into the pipeline and provide a quick and effective positive pipeline shut off when required for maintenance or cleaning. They are available in two different, distinct design options: the sliding spectacle blind and the figure 8 type that rotates around a central pivot bolt.

The sliding spectacle blinds are made from solid PTFE, while the figure 8 type are manufactured from stainless steel and lined in either PFA or PTFE depending on the required size. In their open state they allow uninterrupted flow through the pipeline, and when slid into their closed position they very effectively seal the pipeline.