i bought fittings from Home Depot. The short nipples kept leaking from a T that i bought. I wrapped the threads 3 times around with teflon tape. Could i have overtightened it? i tightened it more after i saw the leak, but it still leaked just as much. any advice on how much teflon and how much to tighten them? Or maybe the fittings were defective? should i use pipe dope or something?
b/c carbon dioxide expend many time with increase in 1 degree c , and the pg is the weakest point and it does not bear that pressure. so there fore the co2 fire extinguishers not having a pressure gauge
Yes it does, while you are standing all your muscles are engaged , you burn calories by just standing there. But you may also want to get some cardio in on the weekends, to keep your heart strong.
Never drink anything contained within a test tube or a beaker.
The guages are put on the most fire extinguishers to verify that the propellant has not leaked off. Stored Pressure Dry Chemical, Halon, Foam and Water units use Nitrogen or compressed air as a propellant which can leak off if the seals leak. The unit may still feel full so without a guage you cannot be sure. CO2 in a fire extinguisher has it's own vapor pressure. Which in a closed unit like a fire extinguisher is about 750 to 800 psi at 70 degrees F. So basically if there is ANY CO2 present, you have pressure. You really don't need the guage. You can check to see if the unit is full simply by checking it's weight. Cartidge operated units and some cheap disposable units do not have guages either. The cartridge stores the propellant in a separate cartridge so again, you can verify it's full by checking it's weight. The cheap units will usually have a button you press down and if it pops back up, you still have pressure.
The CO2 inside the bottle is stored in a liquid form (like the LPG Cylinder at home) and when it is being propelled from the hose it is deliberately turned into a gaseous form, so one must realize that how could one single pressure guage indicate the pressure, volume and temperature of both the liquid and gas in terms of exothermic reaction.
