Blichmann Engineering BoilerMaker HopBlocker Hop Filter
Traditional screen filters draw from the bottom of a kettle, immediately sucking all pellet hops and trub into the screen and plugging the system. The HopBlocker™ filters up to 95% of break material from your wort without plugging.
Its preferential flow leaves settled break material undisturbed at the bottom of the kettle while draining the majority of wort through a coarse filter. When the wort level is a few inches from the bottom of the kettle, the fine filter is exposed and the remainder of wort is filtered. This intuitive design allows the fine filter to work only on a small portion of the wort instead of the entire batch.
While designed to complement BoilerMaker™ brew kettles, the HopBlocker™ can be installed in any manufacturer's kettle or keg.
NOTE: The HopBlocker is designed for use with pellet hops only. Whole/loose hops will plug the unit. While using whole hops, or a mix of whole and pellet hops, you must bag your whole hops in a large muslin grain bag. This will not affect the utilization rate and will result in significantly less wort loss.
THE PROCESS IS UNIQUE, BUT SIMPLE
1. Install the HopBlocker™ into the kettle using the snap-in dip tube.
2. Ensure that the shield is pushed all the way to the bottom of the screen and that the HopBlocker™ is resting flat on the bottom of the kettle. Proceed as normal with your boil. The HopBlocker™ may move a bit during the boil, but this is not a problem. It will automatically right itself.
3. At flameout, vigorously stir the wort with a paddle to create a whirlpool. This encourages the hops and trub particulates to settle to the center of the kettle, away from the HopBlocker™.
4. Allow 15 to 20 minutes for thermal convection currents to slow and allow the break material and hop particulates to settle.
5. Drain your pot as fast as you'd like until you see the top of the kettle drain fitting (about 3 inches of wort).
6. Reduce the drain flow rate to about one-third of the initial flow rate. This allows the wort to slowly permeate through the hops and trub without dragging them to the filter where it may plug.
7. Use your paddle to hold the filter down and quickly pull the shield up with a gloved finger or a racking cane to expose the fine filter on the bottom of the HopBlocker™. It is important to quickly complete steps 6 and 7 so you do not lose the siphon, which will stop the flow.
WHOLE HOPS RECOMMENDATIONS
Loose leaf hops generally plug the coarse screen. Therefore, we highly recommend using large muslin grain bags to avoid plugging. In addition, you lose a large amount of wort from leaf-hops absorption. Using a bag