spectacle blind Germany

...Components for Gas Pressure Regulating Stations - Spectacle blind BS...

... disc) type LS with full passage as a placeholder for disassembled blind disc (full disc). Spectacle spacer disc (interchangeable disc, rotating spectacle) type US combines both blind disc (full disc) and perforated disc (open disc / ring disc) through simple interchange or rotation. Throttle discs type DS for limiting the media flow, throttling the flow velocity of media in pipelines, and defined pressure reduction. The throttle hole is customized.

...also available as a spectacle blind flange with RTJ groove (female or male type) according to ASME B16.48, directly from the manufacturer...