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CO2PO® Single Body Regulator


SKU# K300

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Our newest CO2 Regulator is built to serve. Fluent in all Beer Styles (and sub-styles), CO2PO® is here to recommend precise carbonation for your home brew.

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Availability: In stock

CO2PO™ Single Body Regulator

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  • CO2PO™ Single Body Regulator


Product Details
Our newest CO2 Regulator is built to serve. Fluent in all Beer Styles (and sub-styles), CO2PO® is here to recommend precise carbonation for your home brew. Machined from solid brass, the regulator body features a stainless steel diaphragm, not rubber, for improved stability. A large ergonomic adjustment knob makes fine tuning your carbonation more than just standard protocol. Easy-to-read regulator gauge includes PSI ranges for major beer styles, and with a maximum range of 40 PSI, a higher resolution for dialing in exacting CO2 volumes. High-pressure gauge tells you when to refill your tank. Integrated check valve for safety. CO2PO® is here to serve your beer with nary a worry nor complaint.

  • Machined brass body with stainless steel diaphragm
  • Rubberized gauges are easy-to-read.
  • Integrated beer style volume ranges on the dial face.
  • 40 Maximum PSI for improved resolution.
  • High-pressure gauge monitors tank pressure
Additional Information
Support Documents:No
2.9 / 5.0
16 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
I got this as a part of the single keg draft system. Feels pretty sturdy in your hand. Seems pretty finicky though. As Zachary said it doesn't seem to hold a steady pressure. Also as you turn the knob to adjust the pressure up it doesn't appear to do anything and then all of a sudden the needle will jump up to 5psi+. Then it seems very sensitive after that point making it hard to dial in. Also not sure how accurate the tank gauge is. I've only had it hooked up to my tank for about 3 days, but it seems like the level on a full tank has fallen substantially. Not seeing how I'll get 5-8 5gallon kegs out of a single 5lb tank at the rate the gauge says I'm using it.
August 31, 2016
Response from Northern Brewer
Thanks for the review! The tank gauge is not actually linear, but rather logarithmic. This means it will not change all at once and really is just a warning that you may need to refill soon - all high pressure gauges I've used work that way. It also is temp dependent, so if storing that CO2 tank cold, the pressure will drop dramatically. Always a good idea to do leak tests with a spray bottle just in case. Oh, and usually they loosen up and stop working smoother once they've gotten adjusted a few times. Hope it is working well though and let us know if we can help in anyway!
November 21, 2016
Chad MStaff
Updated Review
I am storing the tank in the refrigerator so that explains the tank gauge dropping, but I'm still dropping this to 2 stars. The adjustment is still finicky as per my first review, twist and nothing then it jumps up. Makes it pretty hard to dial it in to a specific psi. Also till doesn't seem to be steady with the pressure. Poured myself a beer last night and it didn't seem to have a good flow so I checked the regulator. It's been set for the last 2 weeks at 11psi no problems. Well it had dropped down to a little over 7psi, so I dialed it back up to 11. When I woke up this morning and checked it had jumped up to 20psi. I so I turned it back down to 11. This evening I went to pour another beer and the regulator is still set at 11 but now my beer is coming out as nothing but foam even if I just pour it at a trickle. I can only assume spending the night at 20psi messed up the carbonation. Going to vent it periodically in hopes that I can get it to pour that perfect pint again. Otherwise I'm going to be drinking half foam beers until I get this keg empty.
September 12, 2016
Does not hold constant pressure
I ordered this regulator with 2 kegs and a manifold. Got everything hooked up easily, but while carbonating a fresh keg the pressure varies a huge amount from the setpoint - 12 up to 20 psi in a few hours. If you're carbonating a fresh keg while still trying to keep another at serving pressure, beware. Seems to work fine once keg is fully carbonated, though.

Also, after a couple of weeks in a keezer with some water condensation, the brass has tarnished badly.
November 23, 2016
Ok regulater
This regulater is rather inconsistent and feels to be cheaply assembled. The CO2 level for my cylinder never changes in the gauge and the pressure gauge constantly changes and doesn't hold its pressure I set it to. I won't return this regulater, but wouldn't recommend it.
August 24, 2016
Response from Northern Brewer
Thanks for the review. We can't accept your settling on an "ok regulator" that we have confidence in. We will be sending a new regulator and a label for the unit you have. We want to see what the issue is with the unit received.
November 21, 2016
Chad MStaff
Having Issues
I'm having the same exact issues as the above reviews. At first I thought maybe I got a lemon and N Brewer replaced it but after struggling with the new one all weekend I'm not sure what's going on. There seems to be a delay by the regulator as you pour a beer or two, the psi drops on the gauge and takes a few minutes before the regulator kicks in then it doesn't come back to the pressure it was set at. This isn't a problem if you pour a single pint but pour a couple or more at a time the pressure drops to where you don't get a good pour, just a trickle. Then if you adjust the regulator to make up for it it will mess up your original setting and give you a higher psi with a foamy pour on your next pint. I'll give it another week and see if it improves before I return them.
September 19, 2016
Response from Northern Brewer
Customer service is always happy to help! We find that new regulators need a little bit of wearing in to help the diaphragm hold pressure as reliably as possible. Usually this takes a few uses and you can try increasing the pressure and purging the regulator by opening the red valve with nothing attached to try and loosen/dislodge any dust from manufacture.
November 21, 2016
Chad MStaff
Regulator increases pressure over time
Concur with the other reviews about inaccuracy and the regulator not holding a constant pressure. Doesn't matter what level you set it to, it will not hold the pressure, and continually increases pressure. I once set it to 20 psi and came back 12 hours later and was pegged at 40 psi, Beer became over carbonated - wasted gas, etc. I would not recommend.
July 5, 2017
Absolute junk
This came with the single keg system that I bought, and it is nothing but junk. If I set the gauge to 10psi, it is all over the place. After you set it and you think everything is fine, 30 minutes later or so, it's up to 20psi. You re-adjust and then it falls below 10psi to about 7psi or under. I've used a regulator before and this did not happen.
January 21, 2017
Will not stay where you set it
I've had this for over a year and after working with it over the year, it's still not reliable. Set at 7-9 psi and it will always drift to 15-20 over the next hour or two.
I only use it to quick charge my keg.
I have a different set that works as it should
June 6, 2017
smooth and gentle
This thing works fine , WAY better than my old Kegco
July 30, 2017
3 months ago
Pressure drops a lot
First time using this regulator, I decided to burst carbonate my amber ale , so I hooked everything up and set at 30 psi . The lower gauge read at just over 800 psi on a brand new gas cylinder. But for some reason top gauge at 30 psi kept dropping to 20psi in a matter of an hour ! Next thing i knew 2 hours later my bottom gauge dropped from 800 psi to 600psi .Im losing a lot of gas and I checked for leaks and found none.It my first time kegging a home brew , so im thinking "what am i doing wrong ". Well , from looking at these other reviews , looks like other people are have the same problem.
July 31, 2017
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 6 questions Browse 6 questions and 18 answers
Is it possible to later screw two CO2PO's together into a double regulator?
C S on Jul 11, 2016
BEST ANSWER: While I have not personally done this I believe it is very easy to manifold two units together and have separate setting for the amount of regulated pressure you want. Both units should be under tank pressure
What is the plastic o-ring for that comes attached?
A shopper on Dec 31, 2016
BEST ANSWER: It's not plastic it's nylon. Very very important, it's a CO2 washer that will seal the regulator to your gas tank and prevent the tank from draining in ~2 days. Make sure it's put on in the right direction. If your tank drains quickly is usually the washer and regulator not tightened enough.
Can this be attached to a paintball tank?
A shopper on Dec 25, 2016
BEST ANSWER: I'm not familiar enough with paintball tanks to be 100% confident. BUT the small paintball tank that I have for taking my beer on the road needed an adaptor to get it hooked up into my CO2 regulator.

This regulator fits a standard CO2 tank just fine, your paintball tank would need to adhere to those same standards in order to work with this regulator.
Can I put this regulator and a 2.5 pound tank inside my fridge? I use 3 gal kegs and open the door to draw a beer. I have been filling them with gas then removing the co2 line. (wife not in favor of hole drilled in fridge).
A shopper on Jul 28, 2017
BEST ANSWER: I have the same setup as you are describing. I keep my 3 gal Keg laying on it's side on the bottom shelf of the fridge. I then put the CO2 bottle upright in my fridge door on the lowest shelf. When I get to half full on your keg I have to pull out of the fridge and stand upright to not draw air with my beer. I have read you want to keep the CO2 bottle upright or risk drawing liquid CO2 into your beer. Not sure on this as I never tried leaving a CO2 bottle connected on its side.

You will notice the pressure in your CO2 will decrease with temperature. So you will need to increase the pressure knob to maintain the pressure you want as the CO2 cools down. Otherwise you may see beer creep into your CO2 line.
New regulator and my low pressure gauge needle does not go below 30 psi, even when disconnected. Is it defective?
A shopper on Feb 12, 2017
BEST ANSWER: Yes, I had the same thing happen to me. Just give customer service a call and explain. They sent me a brand new one free of charge
How many 5 gallon kegs will this support? Do you have to have one for each?
A shopper on Jan 14, 2017
BEST ANSWER: One keg can be hooked up directly but you can get a co2 distributor to connect multiple kegs.


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