Dimensions of Spectacle blinds according to ASME B16.48
for installation between ASME B16.5 flanges
General notes:
- Dimensions are in millimeters unless otherwise indicated.
- D = Hole size (where required) should be the same as the flange bolt hole. In practice, these dimensions have been rounded round off upwards.
- Wt = Thickness of the web (or tie bar) should be 6 mm minimum, or equal to Thickness (t) if less than 6 mm.
- Spectacle Blinds should be made from a plate or forging specification, approved for use by ASME B31.3, of essentially the same chemical composition as the mating flanges and piping involved.
- Depending on a customer specification, some dimensions can be different from what on this page is defined.