guage help

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one of the guages on my o2 tanks dosent work. its not a big deal its not the pressure guage but it would be nice to see when the tank is almost empty. so i was wandering is this something i can take apart and clean up. the guy i got them from said they havent ben used in several years. or would it be easier to buy a new one.
Reply:They are both pressure gauges. I'm guessing from your comment it's the high pressure one. Your LWS sells O2 clean high pressure gauges. The last ones I bought ran maybe $15 max. Note that it is very important that the gauge be O2 clean. Gauges you pick up from most places are NOT designed for O2 service and can cause a fire/explosion if used with O2.Because this is O2 you have to be careful not to get any contaminants like oil, grease, dirt etc on any parts that will come in contact with O2. If the reg is fairly clean, just wipe it down well with a rag to remove any loose material before you start. If it's super dirty or oily, you might want to think about haveing the supply place send it out to be cleaned/rebuilt. DO NOT USE A SOLVENT TO CLEAN THE REG! Chances are you will get oil/solvent into areas that need to be kept clean. Also when you install the new gauge, you need to be sure to use O2 safe tape or dope (the supply place probably has this also) Normal plumbing stuff is generally not O2 safe.This isn't hard, but the consequences of doing it wrong can be catastrophic. Everything burns in the pressence of 100% O2 under the right circumstances, and in some cases you don't even need an ignition source as friction of moving gas can be enough..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:great info thanks   jerry