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Oxygen Free HopDrop
Oxygen Free HopDrop
Oxygen Free HopDrop
Oxygen Free HopDrop
Oxygen Free HopDrop
Oxygen Free HopDrop

3" Tri-Clamp Oxygen Free HopDrop

Oxygen-Free HopDrop – Tri-Clamp Hop Addition Module

Closed-System Dry Hopping for Pressure Fermentation

Designed to eliminate oxygen exposure during dry hopping, the HopDrop enables clean, secure hop additions to your fermenter under pressure. It connects directly to your Unitank or pressure-rated conical via a 3" tri-clamp butterfly valve, maintaining a sealed environment throughout the process.

A built-in keg post allows purging with CO₂ prior to hop release, ensuring full control over oxygen ingress. The entire system uses sanitary tri-clamp fittings for fast setup and easy cleaning.

3" tri-clamp butterfly valve for direct fermenter lid connection
Keg-style gas post for CO₂ purging before hop addition
Oxygen-free hop dosing preserves aroma and prevents oxidation
All connections use tri-clamp fittings — no threads or tools required
Durable stainless steel construction ensures long-term reliability
Designed for pressure fermentation and closed transfer workflows

Applications

Dry hopping under pressure
Mid-fermentation hop additions without oxygen exposure
Maintaining aroma integrity in hazy or hop-forward styles
Compatible with Bräu Supply Unitanks and other 3" tri-clamp fermenter lids

$250.00 USD
Description
Technical Details

Oxygen-Free HopDrop Manual

Tri-Clamp Dry Hop Module for Pressure Fermentation

Overview

The Oxygen-Free HopDrop is a sealed dry hop dosing system designed to add hops mid-fermentation without exposing your beer to oxygen. It connects to your fermenter via a 3″ tri-clamp butterfly valve and features a gas post for CO₂ purging prior to hop release.

This system is ideal for pressure fermentations and closed-loop workflows, preserving hop aroma and avoiding oxidation in hop-forward beer styles.

Components & Connections

  • 3″ Tri-Clamp Butterfly Valve
    Mounts directly to the fermenter lid or dedicated 3″ tri-clamp port.
  • Hop Chamber
    Stainless steel dry hop dosing body.
  • Ball Lock Gas Post
    Allows CO₂ purging using a standard keg-style disconnect.
  • Tri-Clamp Fittings Throughout
    For secure, sanitary, and tool-free assembly.

💡 This system is designed for use with pressure-rated fermenters with 3″ tri-clamp ports (e.g., Bräu Supply Unitanks).

🔧 Installation

  1. Sanitize all components thoroughly prior to assembly.
  2. Attach the HopDrop to your fermenter using the 3″ tri-clamp connection and gasket.
  3. Ensure the butterfly valve is in the closed position.
  4. Load hops into the dry hop chamber.
  5. Secure the top tri-clamp cap and gas post assembly.

🌀 Purging Procedure

  1. Connect a CO₂ line to the ball lock gas post.
  2. Open the gas line briefly to purge the chamber (2–3 short bursts recommended).
  3. Wait a few seconds to allow gas to settle, then repeat if desired.
  4. Disconnect the gas line when finished.

✅ This step is essential for preventing oxidation of your beer.

🍺 Hop Addition

  1. Once purged, open the 3″ butterfly valve to drop hops into the fermenter.
  2. Close the valve after the drop is complete.
  3. Monitor fermentation pressure and re-adjust spunding valve or PRV if necessary.

🧼 Cleaning & Maintenance

  • After use, disassemble all tri-clamp components.
  • Rinse and soak in brewery-safe cleaner (e.g., PBW).
  • Rinse thoroughly and sanitize before next use.
  • Inspect gaskets and seals for wear or hop residue.
  • Store dry with all components fully disassembled.

⚠️ Do not pressure-fill or force carbonated beer through the HopDrop. It is designed for dosing only.

📏 Specifications

  • Chamber Connection: 3″ Tri-Clamp
  • Gas Post: Standard ball lock (gas-in)
  • Valve: 3″ Butterfly, stainless steel
  • Material: 304 Stainless Steel
  • Gaskets: Silicone
  • Max Working Pressure: Matches fermenter rating (typically 15 PSI)

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FOUNDER STORY

Hi, I’m Steven, founder and CEO of Bräu Supply.

Like many of you, I started brewing because I was obsessed with crafting beer that wasn’t just good—but exceptional. What I quickly realized was that most homebrewing systems were either too clunky, too limiting, or simply couldn’t deliver the kind of precision I was after. So, I set out to solve that.

My mission was simple - Build the most advanced, fully customizable brewing system for serious homebrewers.
Something reliable, compact, built to last for decades—and most importantly, capable of producing ridiculously delicious, consistent, high-quality beer every single time.

That mission led to years of prototyping, testing dozens of materials and configurations, and working with a growing community of brewers. The result? Unibräu—our flagship all-in-one brewing system.

Launched from our 2017 Kickstarter campaign, Unibräu became the world’s first countertop electric brewing system, designed for both beginners and seasoned brewers. Whether you're brewing from your kitchen, garage, basement, or backyard, it fits seamlessly into your life while delivering commercial-grade results.

With Unibräu, everything just clicks—from heating to chilling, every step is streamlined into an intuitive six-step process. You’re in full control, from grain to glass.

In 2023, The Spruce voted Unibräu the Best Electric Homebrewing System, and honestly, I couldn’t agree more.

Whether you're just getting started or you're already deep into your brewing journey, I promise you this:
Once you brew with Unibräu, there’s no going back.

It’s not just a brewing system. It’s the ultimate brewing experience—start to finish.

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