Flanges
BF3: Aluminium 80mm tube to 3" TTMA flange.
BF3-1: Mild Steel 80mm tube to 3" TTMA flange.
BF3-1S: Stainless Steel 80mm tube to 3"TTMA flange.
Sightglasses
BF3-SG: 3" TTMA Sightglass flange (25mm thick).
TW1-SG-25: 3" TW1 Sightglass flange (25mm thick).
TW1-SG-25VZ: TW1-SG-25 c/w Viton A Gasket.