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#1
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Welding Regulator Leakage
I hooked up an oxygen regulator to a tank and opening the tank valve
slowly it registered about 2200 psi. To check for the seal at the regulator connection I then turned off the tank valve with the regulator closed so that the gage was reading only the pressure of the few cc's of gas trapped between the regulator and the closed tank valve. The pressure would drop about 25-50 psi per minute. It should be zero no? John |
#2
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Welding Regulator Leakage
J.Kahn wrote:
I hooked up an oxygen regulator to a tank and opening the tank valve slowly it registered about 2200 psi. To check for the seal at the regulator connection I then turned off the tank valve with the regulator closed so that the gage was reading only the pressure of the few cc's of gas trapped between the regulator and the closed tank valve. The pressure would drop about 25-50 psi per minute. It should be zero no? John Yes. Should be zero loss and hold pressure for hours. Check for any dents on the nipple of the CGA fitting.. any debris on the inside of the valve stem.. and ensure the regulator itself is "closed" when you say its closed... maybe put a balloon over the end of the outlet and see if the balloon inflates.. spray soapy water on the CGA fitting when the reg is attached to the bottle and charged,.. look for bubbles to indicate the leak. And remember do not use anything with grease/oil when doing this troubleshooting (sorry if im stating the obvious).. Dave |
#3
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Welding Regulator Leakage
Dave S wrote:
J.Kahn wrote: I hooked up an oxygen regulator to a tank and opening the tank valve slowly it registered about 2200 psi. To check for the seal at the regulator connection I then turned off the tank valve with the regulator closed so that the gage was reading only the pressure of the few cc's of gas trapped between the regulator and the closed tank valve. The pressure would drop about 25-50 psi per minute. It should be zero no? John Yes. Should be zero loss and hold pressure for hours. Check for any dents on the nipple of the CGA fitting.. any debris on the inside of the valve stem.. and ensure the regulator itself is "closed" when you say its closed... maybe put a balloon over the end of the outlet and see if the balloon inflates.. spray soapy water on the CGA fitting when the reg is attached to the bottle and charged,.. look for bubbles to indicate the leak. And remember do not use anything with grease/oil when doing this troubleshooting (sorry if im stating the obvious).. Dave Got it to seal after removing to clean up and reinstalling. Thanks. John |
#4
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Welding Regulator Leakage
"J.Kahn" wrote in message
... Got it to seal after removing to clean up and reinstalling. Thanks. John Don't forget to open the Oxygen valve (on the tank) all the way when using the torch. It has a double seat; so when it is open fully, there is no gas pressure on the stem packing. Rich S. |
#5
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Welding Regulator Leakage
On Tue, 31 Oct 2006 17:21:07 -0800, "Rich S."
wrote: "J.Kahn" wrote in message .. . Got it to seal after removing to clean up and reinstalling. Thanks. John Don't forget to open the Oxygen valve (on the tank) all the way when using the torch. It has a double seat; so when it is open fully, there is no gas pressure on the stem packing. Oxygen all the way to the stop. Acetylene no more than necessary. Rich S. Roger Halstead (K8RI & ARRL life member) (N833R, S# CD-2 Worlds oldest Debonair) www.rogerhalstead.com |
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