PHMSA has become aware of the sale of adapters designed to allow refilling of DOT 39 cylinders using larger cylinders (see attached photographs). These adaptors are sold at various retail outlets and online. Some of the common trade names are the “Mac Coupler”, “Mr. Heater” and “Shnozzle”. “MacCoupler” is manufactured by KM North America in Traverse City, MI. “Mr. Heater” and “Shnozzle” are manufactured in China and sold on Amazon. Additionally, several websites demonstrate how to use these adaptors.
PHMSA strongly recommends that the general public refrain from refilling DOT 39 cylinders because of the one-time use design of these cylinders, and the purchase and use of any adaptor sold as a means to refill DOT 39 cylinders creates a potential risk of fire, explosion, serious injury, and property damage.
CLICK HERE (pdf) for the full alert.
