Mighty Flame Propane Tank Exchange has been serving the United States and eastern Canada with the highest quality propane tan ... k exchange services since 1937. And we have been a leading supplier of BBQ gas grill propane tank exchange services and retailer solutions since 1986. As a family owned and operated propane business, we live in the same areas we serve, and understand the needs that you have as a home gas BBQ propane tank user. This knowledge and relationship helps us to maintain our position as a front-runner in the propane cylinder exchange industry. read more