Heads up: New-style safety feature in 5-gal fuel cans
A couple of weeks ago I picked up another 5-gal diesel can from HF. It is made by Midwest Can Company, in Franklin Park, IL.
Home It is the only style 5-gal fuel container (diesel or gasoline) now being stocked in the local HFs, around here anyway.
Tractor Supply Company has also started stocking the same brand as well, although not exclusively.
When I tried to insert a nifty HF battery-operated fuel transfer pump
Battery Operated Liquid Transfer Pump , the wand would only go about 7" into the can before hitting an obstruction. That's when I discovered the "Flame Safety Shield" system that Midwest Can is now shipping all its poly 5-gal cans with. Safer it may well be, but it is impossible to use a wand-style transfer pump with them.
The "Flame Safety Shield" is a molded, perforated plastic sleeve/tube that is inserted at the factory and locked into the can with non-releasable polymer tabs.
Puzzled about it, I called Midwest Can and learned that the change is an early response to federal consumer safety requirements for all consumer portable fuel containers that go into effect in 2020. I've done a little reading on this. While the new fuel container requirements are technically administered by the EPA, I think that this particular feature is a new flame-arresting device in response to changes in the federal Children's Gasoline Burn Prevention Act. The idea is to limit explosion risk due to sudden, uncontrolled "sloshing" of fuel, either accidentally by children, or even intentionally by a clueless adult, for example trying to enhance a burn pile that has an open flame. Yep, apparently there are adults as well as youngsters that do this.

The new safety regulations do not apply to OSHA-approved metal safety containers.
In my case, no youngsters or clueless adults have access to my diesel and gas fuel cans, so after a bit of trial and error I've removed the plastic tube with pliers without damaging the can, after getting things started with a screwdriver. If you don't need to use a wand-style transfer pump, there's no need to do this, as the insert does not seem to impair the flow rate when poured normally using the equipped spout.
See pics.


