Size Selection
1/2" - 2"1/2" to 2" NPS (DN 15 - DN 50)
3" - 8"3" to 8" NPS (DN 80 - DN 200)
10" - 24"10" to 24" NPS (DN 250 - DN 600)
Product page
SKYLAND
ASME B16.48 Spectacle Blind Flanges (Figure-8 Blinds)
Skyland Spectacle Blind Flanges (Figure-8 Blinds) are manufactured to ASME B16.48. Consisting of a solid blind disc interconnected by a bridge to an open spacer ring, they provide unambiguous visual confirmation of whether a line is active or positively isolated for safe downstream maintenance.
Manufactured strictly to ASME B16.48 and API 590 standards
Pressure Classes: Class 150, 300, 600, 900, 1500, and 2500 LBS
Sizes: 1/2" to 48" NB (DN 15 to DN 1200)
Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) facings
Ready for quotationShare your range, connection and case requirement.
Talk to ATHStandardASME B16.48, API 590
Pressure ClassClass 150#, 300#, 600#, 900#, 1500#, 2500#
Sizes1/2" to 48" (DN 15 to DN 1200)
FacingsRaised Face (RF), Flat Face (FF), RTJ
MaterialsA105, A516 Gr. 70, A182 F316L, Duplex F51, Inconel
CertificationsEN 10204 3.1, PED 2014/68/EU, ISO 9001:2015
Safety Isolation
ASME B16.48 Spectacle Blind Data
Select nominal size, pressure class, facing, and material.
StandardASME B16.48
ConfigurationFigure-8 Blind & Spacer
Classes150# to 2500#
Sizes1/2" to 48"
Part Number Example
SKL-SB-040-300RF-316L
SKLBrandSkyland Metal & Alloys
SBTypeSpectacle Blind Flange
040Size4" NPS (DN 100)
300RFClassClass 300 Raised Face
316LMaterialASTM A182 F316L
Technical specifications
Design StandardASME B16.48 / API 590
Operational Notes
The bridge handle stays visible outside the flange assembly to indicate open or blinded status instantly.
Product Overview
Figure-8 spectacle blinds provide 100% positive shutoff without relying on valve seals, essential during hazardous chemical tank entry and piping modifications.