Also, you can get a pressure relief valve and install it on your O2 hose before your torch but after your concentrator. You need to be able to set it to the psi that's the upper limit of what your concentrator can handle. That way if you have the O2 off on your torch, it will vent into the room and not damage your concentrator.
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Lynda
Cheetah, 5 lpm and 7lpm conc/generator (8-9 psi), natural gas (booster), started 11/06
"The time you enjoy wasting is not wasted time." -- Bertrand Russell
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