**Close the propane tank valve after each use.** Leaving it open does not automatically cause a leak if everything is working properly, but it leaves the hose, regulator, connections, and fireplace valve supplied with gas.

The fireplace’s control valve stops gas reaching the burner; it cannot stop a leak at a hose or connection upstream of it. With the tank valve open, a leak there can continue feeding propane into the surrounding area. Accumulated gas can ignite and cause a fire or explosion. Closing the tank valve limits that supply. [Weber’s gas shutoff guidance](https://www.weber.com/CA/en/blog/burning-questions/turn-it-off-turning-off-the-fuel-source/weber-30503.html)

For a propane fire pit, follow your model’s shutdown instructions and close both valves when finished. For example, American Fyre Designs explicitly requires closing the cylinder valve after every use. [Fire pit owner’s manual](https://americanfyredesigns.com/wp-content/uploads/2017/07/AFD-Fire-Pit-Instructions-0-H2-005.pdf)

If reaching the valve requires lifting the whole fireplace, check its manual for the intended access method—there may be a removable panel or a particular tank orientation. Ask the manufacturer about an approved arrangement that makes the valve accessible. Also confirm that your added firestones are approved for that model and placed as instructed.

If you smell gas or hear hissing, stop using it. Close the tank valve **only if safe**, move away, avoid flames and electrical switches, and call the fire department or propane supplier from a safe location. [Propane safety guidance](https://propane.com/safety/safety-guide-for-propane-users/)