Lubricators may be filled while the system is under pressure Maximum operating pressure is: 150 PSI at 125 degrees Fahrenheit carbonate bowl Operating temperature range is -10 degrees Fahrenheit For pressures up to 250 PSI at 175 degrees Fahrenheit (maximum) 5 ounce bowl capacity Warning: oils with adhesives, compounded oils containing solvents, graphite, detergents or synthetic oils must not be used 1/4 in. NPTF