Polycarbonate Sight Glass for 35L & 65L BrewZilla

Polycarbonate Sight Glass for 35L & 65L BrewZilla

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The BrewZilla Polycarbonate Sight Glass comes assembled with stepless clamps and fits both the 35L and 65L units. This piece is installed in place of the stainless recirculation tube and allows you to check your fill level or watch your wort clarify during mash recirculation.

Intended for use with BrewZilla model 3.1.1 or earlier. Not compatible with the Gen 4 BrewZilla. Support brackets on older models may be too small for the 0.59" OD polycarbonate tube.


  • Stainless 1/2" Male BSP threaded post with o-rings
  • Stainless 1/2" Female BSP threaded post with o-rings
  • 360 mm long polycarbonate tube (13 mm ID x 15 mm OD)

Please note: you may need to use varying amounts of plumber's tape to get it to seal in the right position once it has been tightened back down on the female bottom end.

Warning: if using PBW, it is recommended to not have an extended contact time at temperatures above 120°F or exceeding the recommended dilution ratio.


KegLand Part Number: KL17114


Item # AG493
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.23 LBS
Community Q&A

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Browse 1 question Browse 1 question and 50 answers
Why did you choose this?
MoreFlavor Store
a 'must have' item
Norman B on Sep 6, 2022
Curious about it
Chad D on Sep 5, 2022
a 'must have' item
Norman B on Sep 6, 2022
reviews suggested
Byron J on Sep 6, 2022
Curious about it
Chad D on Sep 5, 2022
I would like to the water level on the outside.
Nate Gardner on Sep 3, 2022
Bc you always order the stuff
Carl L on Aug 2, 2022
these things break all the time. need a few on hand....what a money pit
DANIEL M on Jul 7, 2022
It is hard to see what the level of wort is in the kettle with out this
Anthony L on Jul 6, 2022
To see when sparging is complete
Jeffrey Z on Jun 30, 2022
So I can see my mash and boil volume
Steve H on Jun 24, 2022
recommended by the site
Eddie M on Jun 23, 2022
Because I did
Michael G K on Jun 23, 2022
For safety should I need a much smaller batch later
Floyd Jamison on Jun 23, 2022
handy to see wort level
Lonnie D L on May 27, 2022
Better visual of level
RANDY A M on Apr 20, 2022
View of wort level and color
Stan on Feb 28, 2022
fits my brewzilla and can't see volume marks with basket in it
Greg O on Feb 19, 2022
To make sparging easier
Jeffrey Wicks on Feb 16, 2022
Like to see volume of kettle
Wayne on Feb 11, 2022
Friend recommended
Jerry P on Feb 2, 2022
To have a quick check on the liquid level without removing the lid
Matt S on Jan 22, 2022
Great Reviews
Adam A on Jan 22, 2022
To monitor the fill level as I sparge.
Craig H on Jan 5, 2022
to add visibility
Robert A on Dec 2, 2021
to see wert level
AJ H on Dec 2, 2021
Trying it out. Have done a couple batches and just wanted to monitor clarity
D. Francis on Dec 1, 2021
part of package
Dennis F on Nov 9, 2021
So I can see how much liquid I have during th boil
Rell Ambrose on Nov 9, 2021
Good to have.
Edwin Clay F on Nov 8, 2021
No way to tell what you fluid quant is during mash in without using a stick
Ted on Oct 8, 2021
Because I need to for sparging
Dave H on Oct 8, 2021
to see wort level and mash clarity
Robert C on Sep 9, 2021
It will be more convenient when trying to see the volume level in my 65L Brewzilla
BRAD A P on Sep 3, 2021
assist in sparging
JP on Aug 31, 2021
Upgrade my Mash&Boil
Gordon Bair on Aug 27, 2021
To add to my Mash & Boil.
Raymond L on Aug 6, 2021
So I can tell how much water is in my kettle during Mash
Dan on Aug 6, 2021
Upgrade my mash and boil
Mark H on Mar 10, 2021
So can see clarity of wart/mash
Nicholas H on Mar 8, 2021
Branded sight glass to fix the oversight in the brewzilla design
neededto be able to check wort level at a glance
Edward D on Feb 25, 2021
Who doesn't want to peek.
ROBERT E P on Feb 25, 2021
Need to track volume
Valued C on Feb 24, 2021
Use for more precise control
Matt M on Feb 24, 2021
Hope it will allow mr to see water volume during sparge
Gary Gammel on Feb 17, 2021
Good price
Bradley S on Feb 16, 2021
To see my wort level easily
Cole Christian on Feb 13, 2021
One of the challenges using the BrewZilla is knowing how much wort you have when sparging. This clear tude should show the wort level when the valve is open.
THOMAS G on Feb 9, 2021
made alteration with tubing but it is hard to read
Keith D on Jan 27, 2021
checking water level
Stephen H on Jan 26, 2021
Wanted it
Mac on Jan 22, 2021
reviews suggested
Byron J on Sep 6, 2022
I would like to the water level on the outside.
Nate Gardner on Sep 3, 2022

3.0 / 5.0
25 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 3 out of 5
Great idea but not so great design.You can make it work well though!
I was excited to replace the SS piece with the clear poly site glass. It was an easy task install. I added water into the kettle to check for leaks and there were none. Upon installing the spare arm to the cam lock,I noticed the cam lock was tight and difficult to lock in the sparge arm. While fighting to lock it in,I broke the poly glass tube cleanly where the tube is attached to the kettle with a clamp. It seems that the tube is vulnerable to breaking in this area since there ic nothing to brace the tube where it fits into the cam lock piece. I was able make a brace with a piece of tin sheet and replaced with a new poly tube. It's been working very well. I like it a lot.
User submitted image
User submitted image
September 16, 2022
1 month ago
Rated 1 out of 5
Sight glass :(
Do not recommend this product, after 4th brew it cracked at the top. Weight and pressure from pump arm it to great. Will have to go back to original stainless tube.
July 18, 2022
1 year ago
Rated 4 out of 5
Sight Glass makes determining quantities much easier
When you have the mash pipe elevated on the kettle it is impossible to see the water level in the kettle. Using the sight glass makes it possible to determine the water level. I only gave it four stars as it does not come with pre-marked gallon levels. I added after install with a Sharpie.
July 7, 2022
3 months ago
Rated 1 out of 5
Super fragile and prone to breaking/leaking
I figured for the low price I'd give this a shot. The first one cracked during water calibration and before I could even brew with it. To MoreBeer's credit, they replaced it quickly, but the second one only made it 4 brews in before cracking as well.

Both instances the crack happened at the support bracket, showing that ANY kind of pressure, torque, or even bumping the assembly could crack this tube resulting in leaks while the pump is running. For the second one, I even jury-rigged a more "soft/flexible" bracket to prevent hard pressure where the sight glass meets the unit's metal bracket. This resulted in the recirculation arm being somewhat "squishy" and unstable. But I could live with it...until the tube cracked again.

Until someone devises a model of this with something other than the polycarbonate that is prone to cracking when you look at it wrong, I would highly advise against incorporating this into your Brewzilla unit.
April 4, 2022
11 months ago
Rated 1 out of 5
Not likely to recommend, breaks easily.
Unfortunately this broke the first time using it. The polycarbonate snaps off right above the metal strap. If it happens when your pump is on it can cause major burns. I don’t think I would recommend this product to anyone. I would recommend integrating some sort of glass site in a stainless steel stem.
March 31, 2022
6 months ago
Rated 1 out of 5
Broke at valve after a few uses
Like others have posted, this broke at the top by the valve, right above the attachment to the pot.
March 6, 2022
10 months ago
Rated 1 out of 5
Would not recommend
The same issue as many other people. Broke during my initial cleaning before I even had a chance to brew. Very disappointed.
February 21, 2022
7 months ago
Rated 5 out of 5
Lets me know
This really helps when trying top determine what amount of wort you have and how much to add for the sparge.
I marked mine so that I can get the gallons in the Brewzilla.
Would highly recommend this.
January 3, 2022
12 months ago
Rated 1 out of 5
Would not encourage anyone to buy one.
My sight glass broke during the second brew day for no known reason.
User submitted image
Added Nov 21, 2021
November 21, 2021
11 months ago
Rated 1 out of 5
I purchased this item in March of this year and have about 7 brews with it. In concept, its a great idea and seemed to make my Brewzilla complete. First, it was easy to install. I chose to use a high quality, high temp pipe dope for the threads. Much easier than trying to work with tape in the tight quarters.
Two batches ago, in the middle of a brew, I noticed that the cam lock was getting lose. Upon looking closer, I saw that the polycarbonate tube had cracked right at the upper fitting. I was able to make a repair and replaced the crimp clamp with a hose clamp and it held and seemed to be more solid. Today, while brewing, i noticed dripping off of the lower elbow. Upon closer inspection, I found that the polycarbonate tube had again cracked and was leaking.
It seems like the material that the tube is made from is too brittle and eventually just fails which is too bad because this was such a promising product.
So I guess I'll try and make my own sight glass out of a length of more flexible tubing or at the very least, Ill replace the steel pipe that originally came with my Brewzilla. Thank God I kept it!!
November 21, 2021
1 year ago