Stainless Steel Figure 8 Flanges, also known as Spectacle Blinds, are pipeline isolation components designed to block or allow flow by rotating between a solid blind plate and a ring spacer.
The two elements are permanently connected by a web, forming a figure-8 shape. This configuration enables quick switching between closed (isolation) and open (flow) positions while providing clear visual confirmation of pipeline status.
Manufactured from high-quality stainless steel, these flanges offer excellent resistance to corrosion, oxidation, and aggressive media, making them ideal for demanding industrial environments.
stainless steel figure 8 flanges (Spectacle Flanges)
Flanges types:
figure 8 flanges,spade, spacer ,Spectacle Flanges
Material:
Stainless steel: 304,304L,316,316L
Surface treatment:
Antirust oil, yellow, epoxy coating, nylon surface,hot galvanized,electrical galvanized
Making type:
Forged or casted
Standard:
ANSIB16.5/B16.47/B16.48/B16.36, ASME,MSS SP44, AWWA C207,DIN2527, DIN2566, DIN2573,DIN2576,DIN2641,DIN2642, DIN2655, DIN2656, DIN2627, DIN2628,DIN2629, DIN 2631, DIN2632,DIN2633,DIN2634,DIN2635,DIN2636, DIN2637, DIN2638, DIN2673 BS4504/10, JIS, EN 1092, NF, API590 FIG.8, GB, etc.
Pressure grade:
ASTM B16.5: 150LBS, 300LBS,400LBS, 600LBS, 900LBS, 1500LBS, 2500LBS
DIN: 6Bar, 10Bar, 16Bar, 25Bar, 40Bar
BS4504: PN2.5-PN40
BS10: Table D, E, F, H
JIS: 5K,10K, 16K, 20K, 30K
){kind=link}