Residential propane
Propane Cylinder Recertification
Every propane cylinder has a manufacture or recertification date stamped on its collar, and once that date expires, the tank cannot legally be refilled. If your cylinder is out of date, don't worry; we can recertify it right here at our propane refill center.
What it is
The Date on the Collar, and Why It Matters
Check the collar of your cylinder, the protective metal ring around the valve, for a stamped date. That stamp marks the date of manufacture. Twelve years from that date, the cylinder must be inspected and requalified before it can legally be refilled with propane.
More often than not, an expired date pops up at the worst possible time, such as right before a backyard cookout or family event. Any reputable provider is legally required to decline the fill. And because many propane companies don’t offer recertification, they’ll simply hand your tank back and send you elsewhere.
4-T Propane handles cylinder recertification in a single visit. We check your date, inspect the cylinder, and re-stamp and fill it on the spot if it passes.
How it works
Three Steps to Return Your Cylinder to Service
Bring It to the Refill Center
Buchanan Dam on Highway 29 or Marble Falls on RM 1431. If you cannot read the stamp, bring the cylinder anyway and we will read it for you today.
We Inspect It Closely
Our inspection covers the collar date, valve, foot ring, and shell. If a cylinder has real structural or valve damage, it cannot pass, and we will show you exactly why.
We Re-Stamp and Refill
A cylinder that passes receives a new date on the collar and returns to service immediately. It can be filled during the same visit, before you go.
What you get
An Inspection, a Stamp, and a Clear Answer
We Read the Date
Collar stamps are worn and difficult to read. Bring the cylinder in and we will tell you where it stands rather than guessing from a photo.
A Thorough Inspection
We check the valve, collar, foot ring, and shell on every tank. If a cylinder isn't safe to fill, sending you home with a full tank anyway would put your safety at risk.
Filled in One Visit
Any cylinder that passes inspection goes right back into service the same day, saving you a second trip to the refill center.
Cylinder Recertification Questions
How Do I Know If My Cylinder Is Out of Date?
Check the date stamped into the collar, the metal ring around the valve. Twelve years from that date, the cylinder must be requalified before it can be filled again. Bring it in anytime and we will read it for you.
How Long Is It Good for Once You Recertify It?
It is good for 5 years from the recertification date. While a new cylinder is valid for 12 years from its manufacture date, external visual recertifications (marked with an "E" on the collar) extend its use in 5-year intervals as long as the tank remains in safe condition.
What Happens If My Cylinder Does Not Pass?
If a tank fails, we walk you through what we found and explain the issue clearly. By law, an unsafe cylinder cannot be filled by us or any other provider, so catching the problem here allows you to replace the tank safely before you head home to cook or host.
Do You Recertify the Big Tank at My House Too?
Call the office on (830) 220-9240, tell us what you have, and we will tell you what it requires.
Get in touch
Ask Us About Recertifying a Cylinder
Submit this form and one of our propane specialists will reach out shortly.
Need a Cylinder Recertified?
Bring it to our propane refill center, or start an account with 4-T Propane for the tank at your home.