Hop Bong Sight Glass 1.5" Tri-Clamp - Oxygen-Free Dry Hopping

The famous “hop bong”: a 1.5" tri-clamp sight glass with a capped side port. Load it with hops, clamp it onto your fermenter's 1.5" TC port, purge the chamber with CO2 through the side port, then open the valve below — the hops drop into the beer without a single molecule of air following them.

Oxygen at dry-hop time is the silent killer of hop aroma: every gram of O2 that sneaks in during a traditional lid-open dry hop dulls the very aroma you're adding. This little chamber is the cheapest piece of low-oxygen kit you can own — and between brews it works as a plain sight glass or sampling chamber.

Key features

• 1.5" tri-clamp ends — fits standard TC ports and valves
• Capped side port for CO2 purging
• Clear body — watch the hops drop and the beer flow
• Triples as sight glass, sample chamber and hop doser

Usage

• Load hops → clamp on → purge with CO2 → open the valve: zero-oxygen dry hop
• Clamp and gasket not included — use your 1.5" TC hardware

Quick facts

• Connection: 1.5" tri-clamp, both ends
• Side port: yes, capped — for CO2
• Body: clear
• Hardware: clamp/gasket not included

Related products

• Sight Glass 2" TC
• FermZilla 2" TC Pressure Lid
• FermZilla 2" Butterfly Valve
• Mosaic Cryo Hops

From the blog

• Dry Hopping Guide: Cryo vs T90, Timing & Technique