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#1
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Bubble Rate Changes at Night
I've got a CO2 Tank/Reg system. I keep the out going pressure at
5psig into a needle valve. I have the valve set for 2 bubbles per minute and it stays like that all day. Problem is - when I get up in the morning the bubble rate is very slow - less than one bubble per second. Pressure is the same. Resetting the rate with needle valve works fine. Why would this be happening? This is one of those $25 needle valves from Foster/Smith. Should'nt it stay adjusted? Thanks for the help. |
#2
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Bubble Rate Changes at Night
Could the CO2 bottle be near a heating duct? or near a drafty window? maybe
air movement thru the room is cooling/warming up the canister/regulator, and somehow while it's condensing/expanding it's allowing the flow to change? off the top of my head.... "Bill Beam" wrote in message ... I've got a CO2 Tank/Reg system. I keep the out going pressure at 5psig into a needle valve. I have the valve set for 2 bubbles per minute and it stays like that all day. Problem is - when I get up in the morning the bubble rate is very slow - less than one bubble per second. Pressure is the same. Resetting the rate with needle valve works fine. Why would this be happening? This is one of those $25 needle valves from Foster/Smith. Should'nt it stay adjusted? Thanks for the help. |
#3
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Bubble Rate Changes at Night
Bill Beam wrote:
I've got a CO2 Tank/Reg system. I keep the out going pressure at 5psig into a needle valve. I have the valve set for 2 bubbles per minute and it stays like that all day. Problem is - when I get up in the morning the bubble rate is very slow - less than one bubble per second. Pressure is the same. Resetting the rate with needle valve works fine. Why would this be happening? This is one of those $25 needle valves from Foster/Smith. Should'nt it stay adjusted? Thanks for the help. 350X Rider already suggested temperature as a cause. Check that first. If that's not it, check the tank output valve-the knob on top of the tank. The directions on my CO2 regulator said to just crack that valve a bit, which unfortunately can cause unstable gas flow. Open that valve a full turn at least. Also consider setting what you called the "out going" pressure closer to 10psi. That may stabilize things for you. |
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