Never saw one like it.....

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2003 BEALL BABDS 34 1

 

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2016 BEALL

 

https://www.truckpaper.com/listings...a&sortorder=#sortorder#&SCF=False&page=#page#

 

Lol... I don't think they have implemented vapor or dust recovery into any dry bulk tanker applications that I have seen... Vapor recovery as far as I know is a liquid tanker thing... The loading and unloading is done in a closed circuit... Fluid is pumped into the trailer, and the air or vapor that it displaces in the trailer is simultainously removed from the trailer and either put into the vessel the fluid is coming out of or ran through a filtration system to remove the hazardous gases and or particulates.

 

Liquids, a 4 pot was Matlack speak for a 4 compartment liquid trailer built in a double conical configuration instead of a round barrel. Conical trailers drain better on flat surfaces where a long round barrel needs to slope towards the rear, often needing to back up on blocks or unhook and crank it up to gain pitch for good drainage.

Vapor return started in the early 70's with gasoline and rapid bottom loading utilizing the vapor lines in reverse as the trailer filled.

Ozone depleting chemicals, mostly chlorinated solvents like Percholoroetheylene, Methylene chloride, etc. started to require vapor return in some jurisdictions so stainless piping and API style bottom loading adapters and scully cut-off float systems were added to DOT 406 and 407 equipment used for solvents.

Chlorinated products are fairly heavy [12+ #/gal.] so compartmentalized trailers offer the flexibility to load mixed shipments.

 

Gasoline tankers are much different than what you describe. Each trailer and/or compartment slopes toward the rear so you can get unload all of the product. It's enough of a slope that you can barely see it. On level ground I can unload every drop of gasoline if I choose to wait until there's no product in the sight glass.

 

That is for some trailers. We have some V bottoms, where the front one slopes back, the rest slope forward, and it is very noticable. I don't have to be on a slight incline to drop the full load. I think it empty's much better.

 

Love my Polar V bottom. It drains FAST.

 

If it looks and feels like a Gas tanker then more then likely it will be a Gas tanker maybe just a newer version of one.