Salvaging broken CO2 regulator - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 11-20-2012, 03:07 AM Thread Starter
Algae Grower
Bakuphoon's Avatar
Join Date: Jan 2012
Location: Omaha, NE
Posts: 24
Salvaging broken CO2 regulator

So, as embarrassing as it is, when I got my first CO2 tank I broke the crap out of the regulator trying to put it on. I was pretty sad that I broke a $100 piece of equipment, but I felt too ashamed to just throw it away so I put it back in the box and put it in my closet. That was almost a year ago and started thinking about it, I might be able to just replace the broken parts and re-use the rest of it!

This is the regulator I got. What happened when I broke it is I turned the knob on the right to let the gas in instead of the needle valve on the right. Tons of gas when through the system and it blew all the water in the bubble counter into the tubing and then the tubing off the diffuser. I'm pretty sure the solenoid and the bubble counter are salvageable, but the needle valve and the pressure gauge are broken. Is it possible to buy a new gauge and needle valve and attach it to the solenoid and bubble counter?
Bakuphoon is offline  
Sponsored Links
post #2 of 5 (permalink) Old 11-20-2012, 05:52 AM
Planted Tank Obsessed
Join Date: Mar 2006
Location: Canada
Posts: 301
The gauge and needle valve are just screw in parts. They're easily replaceable.
RoyalFizbin is offline  
post #3 of 5 (permalink) Old 11-20-2012, 06:16 AM Thread Starter
Algae Grower
Bakuphoon's Avatar
Join Date: Jan 2012
Location: Omaha, NE
Posts: 24
Awesome, that's what I figured. Thanks!
Bakuphoon is offline  
post #4 of 5 (permalink) Old 11-20-2012, 07:26 AM
Darkblade48's Avatar
Join Date: Jan 2008
Location: Toronto/Singapore
Posts: 10,673
You can still use the regulator without a low pressure gauge. You just won't be able to see how much your delivery pressure is.

As mentioned, the needle valve is replaceable. However, I believe for the MA957, the solenoid output is #10/32 female, and the needle valve converts it from the #10/32 to a 1/8" male NPT for the bubble counter.

If this is the case, you will need to figure out what to do (I do not suggest mounting a needle valve with a #10/32 fitting (i.e. such as the Fabco NV-55) directly, as the fitting is small and delicate).


A Primer to Pressurized CO2 and A Primer to Planted Tanks
Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
Darkblade48 is offline  
post #5 of 5 (permalink) Old 11-20-2012, 11:27 AM
Plant Clown
kevmo911's Avatar
Join Date: Sep 2010
Location: Greensboro, NC
Posts: 4,729
The solenoid has 1/8" NPT ports, so any needle valve with 1/8" male threads will fit. However, the bubble counter might be trash, too, since the one that comes with the Milwaukee doesn't have any sort of nozzle to create a small bubble. Take a look at it and you'll see what I'm talking about - it relies on the tiny nozzle of the included bubble counter, while any other bubble counter of that style has a brass bottom and included check valve.

As for the gauge, do an Evilbay search for "1/8 pressure gauge" (the threads are 1/8" NPT, unlike industrial regulators, which are mostly 1/4 on all ports). But *first* make sure you can get the broken gauge off. They're probably glued in, so it's gonna take some serious hulking out.

A Clippard MNV-3 or SMC AS-1200 are cheap replacements for the needle valve, and will actually be a bit better than the stock Milwaukee valve. But you'll need a 1/8 to 10-32 adapter for either of them. Or you can search Evilbay for something similar to what you broke.
kevmo911 is offline  

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome