Propane characteristics Safety reminders If you smell gas Uncapped lines Safety relief valve Read your tank gauge Appliance safety Lighting pilots Maintenance Gas grilling tips Weather emergencies Download PDF version Disclaimer       How to read your tank gauge If you are not sure how to read your gauge, contact your propane supplier for help. Look at the gauge attached to the tank with numbers from 5 to 95. (Don’t be confused by the pressure scale with numbers from 0 to 300.) Numbers indicate the percentage of gas in the tank. For safety’s sake - stay above 20% The Railroad Commission of Texas requires all propane gas companies to perform a leak test before refilling an empty tank, to ensure the integrity of your propane piping system. The company may have to charge for this service, so you’ll save time and money by putting your account on a Keep Full program.