Determining the validity of a propane tank involves identifying the manufacture date stamped on the cylinder’s collar. This date, typically presented in a MM-YY format (e.g., 04-24), indicates the month and year of manufacture. Certain tanks require recertification after a set period from this date, rendering them unusable until inspected and re-approved.
Checking the tank’s expiration date ensures safe usage and compliance with regulations. Using a tank past its certification date presents potential hazards during filling and operation. Recertification processes verify the tank’s integrity, preventing leaks and related incidents. Furthermore, many refill locations will refuse to fill tanks that are beyond their specified date.