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Unsure whether blown low-pressure gauge or faulty regulator or what

1205 Views 9 Replies 5 Participants Last post by  TrogdorSlayer22
So I tried to set up my first co2 system today. I have everything needed and just today I replaced the high pressure gauge which broke in shipping. Anyways, I follow the steps for getting it started as per: http://www.plantedtank.net/forums/2...12-pressurized-co2-just-thought-id-share.html

I turned the regulator pressure adjustment knob a fair amount counter clockwise so that there was not really any resistance. 4 to 5 more turns, more or less, and the knob would've come off. Anyways, I open the CO2 tank and I hear a hiss and a pop kind of thing, the low pressure gauge's needle shoots up clockwise, seemingly getting blown, and the high pressure gauge moves up a few hundred PSI and then goes back down to zero.

Now from my understanding, CO2 should still be able to flow even with the low pressure gauge being shot. However, it doesn't seem to flow at all, and I've tried two times now dismantling the system and setting it back up and going through the steps outlined in the thread, and I just hear a pop, the low pressure gauge jumps a little, and then back to its newfound, incorrect resting position, all the way to the right (not at zero), while the high pressure gauge needle doesn't even budge. When I go to loosen the regulator from the tank, CO2 that seems to be in the regulator escapes, and that's it.

Now I just don't understand why the CO2 doesn't seem to flow through the regulator, even after turning the knob clockwise to supposedly let air through. I'm assuming I have to replace the low pressure gauge anyways, since it seems to be shot, but I don't know if it will be in vain since the regulator itself seems to be acting weird, or at least as far as I know.

If a video would help, I would be glad to take one.

Regulator is a Harris 9296 by the way that was NWB on eaBay
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No idea..
but as son as it came damaged my ins. claim would have went in..
well technically the sender needs to file....
Did you mean "NIB".. did it look NIB??
I had a very similar issue that I reported yesterday (http://www.plantedtank.net/forums/9-equipment/1135946-regulator-problems.html). I had to remove the low pressure gauge to release the pressure so that the gas would flow. My gauge seems to be shot but the other parts of the regulator appear to be OK. Did you have the solenoid on or off when you opened the tank? What about the needle valve?

Bump: I had a very similar issue that I reported yesterday (http://www.plantedtank.net/forums/9-equipment/1135946-regulator-problems.html). I had to remove the low pressure gauge to release the pressure so that the gas would flow. My gauge seems to be shot but the other parts of the regulator appear to be OK. Did you have the solenoid on or off when you opened the tank? What about the needle valve?
No idea..
but as son as it came damaged my ins. claim would have went in..
well technically the sender needs to file....
Did you mean "NIB".. did it look NIB??
The regulator was new but without a box. I showed pictures of the busted gauge and they refunded me for the entire regulator and let me keep the reg. Essentially I got a free regulator with a busted gauge, but now I'm finding that I'm having to buy two new gauges which is beginning to pretty much equate to the cost of the regulator. But that's ok. I just want to know if the regulator will still work, or if it's only the gauge that is the issue.

I had a very similar issue that I reported yesterday (http://www.plantedtank.net/forums/9-equipment/1135946-regulator-problems.html). I had to remove the low pressure gauge to release the pressure so that the gas would flow. My gauge seems to be shot but the other parts of the regulator appear to be OK. Did you have the solenoid on or off when you opened the tank? What about the needle valve?

Bump: I had a very similar issue that I reported yesterday (http://www.plantedtank.net/forums/9-equipment/1135946-regulator-problems.html). I had to remove the low pressure gauge to release the pressure so that the gas would flow. My gauge seems to be shot but the other parts of the regulator appear to be OK. Did you have the solenoid on or off when you opened the tank? What about the needle valve?
The solenoid was off and the needle valves were closed. In DarkBlade's thread that I linked, things went wrong between steps 5 and 6, so I did nothing beyond that to get to where I am now. I tried to remove the low pressure gauge but it's glued in and I couldn't remove it today, and I figured since I need to wait for the new gauge to arrive, there's no rush to remove this one. The thing I don't understand is why the high pressure gauge is not seeming to work either. I mean I hope to god that that one didn't break as I just got it today to replace the last one.

Just looked at your thread all the way through. I can see it happening that a relatively small amount of high pressure air got in despite my best efforts to prevent it, just as PlantedRich suggested.
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Essentially I got a free regulator with a busted gauge, but now I'm finding that I'm having to buy two new gauges which is beginning to pretty much equate to the cost of the regulator. But that's ok. I just want to know if the regulator will still work, or if it's only the gauge that is the issue.
I have had this happen on yabe a lot where I receive something broken, not working, or the wrong item. Send pic, full refund. If it were me, I would be suspicious of the entire setup and would buy new elsewhere instead of repairing.
I'd guess the regulator is blown. The hiss and pop was likely the diaphragm "exploding". If the low pressure gauge moved at all when you opened up the tank, then the working pressure was not turned out all the way, or "off". The gauge moved because of the pressure going through the reg.

Just as a point of reference, you cant "close" a needle valve either (most of the time anyway). They're not an on/off valve and are not meant to shut off pressure. Its a needle into a seat. If you jam it shut you risk breaking it.

I'm also going to guess this wasn't too great of a regulator to begin with if the cost of the gauges is even close to the cost of the whole setup!
I'd guess the regulator is blown. The hiss and pop was likely the diaphragm "exploding". If the low pressure gauge moved at all when you opened up the tank, then the working pressure was not turned out all the way, or "off". The gauge moved because of the pressure going through the reg.

Just as a point of reference, you cant "close" a needle valve either (most of the time anyway). They're not an on/off valve and are not meant to shut off pressure. Its a needle into a seat. If you jam it shut you risk breaking it.

I'm also going to guess this wasn't too great of a regulator to begin with if the cost of the gauges is even close to the cost of the whole setup!
I guess I exaggerated a bit. The price I would've paid for the regulator would of been $50, had it arrived in one piece. I have paid $27 now to replace the high pressure and low pressure gauges. The regulator was advertised as new and it does appear to be new (or it did before my tampering with it). The Harris 9296 retails for a couple hundred dollars, but I do not know who'd pay retail, but I've seen people use this regulator before or confirm that it is pretty decent.

https://www.shopcross.com/product/h...y-SNZQSOpUOnLQjIbPCdw-GPdHRm7hcSQ3xoC1afw_wcB

Would you say it is very likely that the diaphragm exploded? What would cause this? When I've read about people blowing their low pressure gauges in the same way I did, I have not seen the diaphragm mentioned; although, that may explain why I don't seem to notice any flow of gas through the regulator.
I guess I exaggerated a bit. The price I would've paid for the regulator would of been $50, had it arrived in one piece. I have paid $27 now to replace the high pressure and low pressure gauges. The regulator was advertised as new and it does appear to be new (or it did before my tampering with it). The Harris 9296 retails for a couple hundred dollars, but I do not know who'd pay retail, but I've seen people use this regulator before or confirm that it is pretty decent.

https://www.shopcross.com/product/h...y-SNZQSOpUOnLQjIbPCdw-GPdHRm7hcSQ3xoC1afw_wcB

Would you say it is very likely that the diaphragm exploded? What would cause this? When I've read about people blowing their low pressure gauges in the same way I did, I have not seen the diaphragm mentioned; although, that may explain why I don't seem to notice any flow of gas through the regulator.
Well there might be a reason why a $200+ regulator was being sold for $50!

if the diaphragm went its likely due to the fact that you (or someone before you) connected the reg and opened the tank valve without having backed off the working pressure to 0. If it simply is a blown gauge you should still be able to use the reg but just wont know what pressure you're running at. Hook up the reg, plug in the solenoid and start cranking up the working pressure. If the reg still works you'll get gas and the output should increase as you crank up the working pressure. If not, the reg is probably shot.
but I do not know who'd pay retail,
in defense of those that pay retail (I do not).. think the above thread answers that one.. ;)

anyways $200 for a new 2 stage reg. is fairly cheap.. ;)
https://weldingsupply.com/cgi-bin/einstein.pl?PNUM::1:UNDEF:X:35-15-510
Well there might be a reason why a $200+ regulator was being sold for $50!

if the diaphragm went its likely due to the fact that you (or someone before you) connected the reg and opened the tank valve without having backed off the working pressure to 0. If it simply is a blown gauge you should still be able to use the reg but just wont know what pressure you're running at. Hook up the reg, plug in the solenoid and start cranking up the working pressure. If the reg still works you'll get gas and the output should increase as you crank up the working pressure. If not, the reg is probably shot.
Yeah, I tried that for the nth time and it doesn't seem to be working. I guess I'll just chalk it up to a loss, and look for another one. At least I know better for next time. Could've been worse anyways. I appreciate yours and everyone's help and time!
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