Milwaukee CO2 Regulator w/Solenoid Valve, MA957

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Milwaukee CO2 Regulator w/Solenoid Valve, MA957

Product code: 3
CO-MA957

Availability: In stock

Ships today if ordered in the next 2 hours and 31 minutes!

$89.95
Reward Points Policy 899 AQUAPOINTS
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Milwaukee CO2 Regulator w/Solenoid Valve, MA957CO2 regulator by Milwaukee Instruments includes solenoid valve and bubble counter

Milwaukee CO2 Regulator w/Solenoid Valve, MA957.

CO2 regulator by Milwaukee Instruments includes solenoid valve and bubble counter. Unit comes with dual gauges each with dual reading of both psi & kg/cm. Left gauge meters tank capacity and right gauge meters flow. Needle valve flow control provides for precise measurement. The solenoid valve comes with a 1.5 meter power cord. (CO2 bottle is not included). Recommended to be used with our pH controller Model SMS122.
Solenoid rated at 3 watts.

Troubleshooting & Maintenance:

* MA957 Clogged Needle Valve Repair Procedure

* MA957 Regulator set up procedure & gas flow adjustment

Questions on Milwaukee CO2 Regulator w/Solenoid Valve, MA957

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  1. Good regulator Review by JAMES M

    This is a no frills regulator that does everything you need for a basic set up. Bubble counter works great with the needle valve and the solenoid turns unit on when your lights come on. Make sure to use the plastic insert that goes in between tank and regulator, they even give you a spare. (Posted on 2/21/2014)

  2. Works good Review by VDog

    Im using this for my planted tank and it works fine. The only problem is if the check valve is not working properly the water in the bubble counter will leak out slowly when the solenoid shuts off(may take two weeks or more).
    I recommend getting one without the bubble counter right next to the solenoid or make sure your check valve is high quality. (Posted on 12/12/2011)

  3. Works as designed Review by Kevin

    Works great and was easy to install and now operate! (Posted on 11/11/2011)

  4. It works. Review by Kevin

    As the title says, it works. It comes as one unit, so no piecing anything together. The bubble counter does not have a built-in check valve as do similar styles, so its a good idea to add one in there somewhere (water backflow to the NV and solenoid would be very bad). The needle valve is difficult to dial in, but can be done and stays there. Regular nylon washers work if you use a lot of force to tighten the reg onto the tank, but a permaseal will not. The specific fitting that this regulator uses is not flat, as other CGA320 fittings are, so 2 nylon washers of specific design are included. Because nylon washers should be replaced every time the CO2 tank is refilled, after two fills youll either have to use a regular nylon washer and crush it down, or contact Milwaukee for their particular washers - they cant be found anywhere else.

    Overall, a good buy for the money. Definitely a good bet for your first regulator rig. (Posted on 3/10/2011)

  5. poor Review by jusmy

    Complete piece of junk they last about 6 months and are difficult to regulate. Their tech support is condescending. (Posted on 10/4/2010)

  6. Great for the money Review by elwaine

    The instructions are almost good. They fail to mention that In order to keep a steady bubble count using the needle valve, the pressure in the secondary stage should be above 20 lbs. (between 20 and 30 lbs. is fine). It takes a few hours until the pressure in the second stage holds steady, so you can initially set it to 30 lbs and it will slowly drop for a while and then remain constant above 20. As long as the second stage pressure is above 20, the needle valve will meter out a very precise and steady flow rate of CO2 - which is easy to adjust using the bubble counter.

    Kudos to AquaCave for prompt shipping and excellent price. (Posted on 12/7/2008)

  7. Good budget regulator. Review by Keithster

    This is my first planted tank and Ive never used CO2 before. The directions were easy to follow, but the setup seems touchy - the only reason I gave it 4 stars instead of 5. It would be fine for a while and then slow to a stop. I finally did get it dialed in with the needle valve - contrary to what the Milwaukee instructions say, I found that starting with the needle valve closed, then opening the main control valve about half way and then slowly tweaking the needle valve is the best way, at least for me. What I really liked, though, was the fast shipping. I ordered at night and they had it shipped first thing the next day. The ability to pay with PayPal was nice too. (Posted on 10/9/2008)


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89.95 In stock
Milwaukee CO2 Regulator w/Solenoid Valve, MA957 4 out of 1 5 based on 7 ratings. 7 user reviews.
Good regulator Review by JAMES M
This is a no frills regulator that does everything you need for a basic set up. Bubble counter works great with the needle valve and the solenoid turns unit on when your lights come on. Make sure to use the plastic insert that goes in between tank and regulator, they even give you a spare. (Posted on 2/21/2014)
Works good Review by VDog
Im using this for my planted tank and it works fine. The only problem is if the check valve is not working properly the water in the bubble counter will leak out slowly when the solenoid shuts off(may take two weeks or more).
I recommend getting one without the bubble counter right next to the solenoid or make sure your check valve is high quality.
(Posted on 12/12/2011)
Works as designed Review by Kevin
Works great and was easy to install and now operate! (Posted on 11/11/2011)
It works. Review by Kevin
As the title says, it works. It comes as one unit, so no piecing anything together. The bubble counter does not have a built-in check valve as do similar styles, so its a good idea to add one in there somewhere (water backflow to the NV and solenoid would be very bad). The needle valve is difficult to dial in, but can be done and stays there. Regular nylon washers work if you use a lot of force to tighten the reg onto the tank, but a permaseal will not. The specific fitting that this regulator uses is not flat, as other CGA320 fittings are, so 2 nylon washers of specific design are included. Because nylon washers should be replaced every time the CO2 tank is refilled, after two fills youll either have to use a regular nylon washer and crush it down, or contact Milwaukee for their particular washers - they cant be found anywhere else.

Overall, a good buy for the money. Definitely a good bet for your first regulator rig.
(Posted on 3/10/2011)
poor Review by jusmy
Complete piece of junk they last about 6 months and are difficult to regulate. Their tech support is condescending. (Posted on 10/4/2010)
Great for the money Review by elwaine
The instructions are almost good. They fail to mention that In order to keep a steady bubble count using the needle valve, the pressure in the secondary stage should be above 20 lbs. (between 20 and 30 lbs. is fine). It takes a few hours until the pressure in the second stage holds steady, so you can initially set it to 30 lbs and it will slowly drop for a while and then remain constant above 20. As long as the second stage pressure is above 20, the needle valve will meter out a very precise and steady flow rate of CO2 - which is easy to adjust using the bubble counter.

Kudos to AquaCave for prompt shipping and excellent price.
(Posted on 12/7/2008)
Good budget regulator. Review by Keithster
This is my first planted tank and Ive never used CO2 before. The directions were easy to follow, but the setup seems touchy - the only reason I gave it 4 stars instead of 5. It would be fine for a while and then slow to a stop. I finally did get it dialed in with the needle valve - contrary to what the Milwaukee instructions say, I found that starting with the needle valve closed, then opening the main control valve about half way and then slowly tweaking the needle valve is the best way, at least for me. What I really liked, though, was the fast shipping. I ordered at night and they had it shipped first thing the next day. The ability to pay with PayPal was nice too. (Posted on 10/9/2008)
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