3" PPSU Sight-Glass Disc — fits sight-glass & dome condenser lids

Clear PPSU disc for any 3" Tri-Clamp sight port — the spare (and the upgrade) for BrewTaurus steam-condenser lids.

This is the clear disc from our sight-glass assembly: seat it in the flanged silicone gasket, clamp it over the 3" ferrule with a 3" band clamp, and you have a window into the boil. It is the exact replacement disc supplied with both Sight Glass Steam Condenser Lids (Ø350 mm & Ø400 mm) — and the missing piece that turns the angled 3" sight port on the K40 / K80 / K220 Dome Lids into a working sight glass (those lids ship without one).

Key points

• Direct replacement — the same disc shipped with the Ø350 (B40L) and Ø400 (B70L / B80L PRO) Sight Glass Lids.
• Completes a Dome Lid — the K40, K80 and K220 Dome Lids have an angled 3" sight port with no glass: add this disc, the flanged gasket and a 3" band clamp.
• Removable mid-boil — pop the clamp and add hops or salts through the port without lifting the lid.

What is PPSU?

PPSU (polyphenylsulfone) is a high-performance engineering polymer that stays clear and dimensionally stable to ~200 °C, shrugs off brewery acids and caustics, and takes impact far better than glass — so the sight glass won't craze or shatter on a busy brew day.

Specifications

Complete the assembly: add the 3" Sight-Glass Silicone Gasket and the 3" Band Clamp.

Browse the full Sight glass range and more spare parts · All 3" TC fittings.