Recently installed a flatbed on my 99 3500. Could not use the original filler tube with the anti spill valve, Now I'm taking a bath every time I fill my truck with fuel. Not sure I can remove the original one without breaking it. No luck finding one on the net or local parts store. Anyone got a source or an option?

My flatbed doesn't have the anti spill either. I have to fill so slow that I cannot use any of the nozzle fill notches that holds the nozzle in the on position or they fill too fast and then shut off after spewing out fuel everytime. I use my utility knife to hold the handle in the on position and fill so slowly I can hear the fill pump squeaking while filling my truck. LOL, I think I get more fuel than I'm paying for that way. Takes about twice as long. I have to turn on the key and watch till the gauge says its near full and then get out and listen for it to come up to full on the fill neck. I shut it off before spewing out.

https://www.perko.com/catalog/fuel_system_components/313/special_application_inlet_check_valves_-_flapper_valve/

I always check the boating industry for unusual things....

I'll add this also....

https://www.fillernecksupply.com/fuel-gas-tank-filler-neck-hose-straight/

This looks like the hot ticket! Thanks for the links

If you do it, let us know how it worked.

I checked out the source, they will only sell to a dealer. They shared their 3 dealers within 200 miles of me. None of them had one in stock, and required buying a minimal of 5 units, which none were receptive. So gotta start calling around beyond my local area for a stocking dealer. Not giving up!

@LD-OrdieThat Perko check valve is on Amazon 

Edited April 16, 20232 yr by Royal Squire
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What size do you need?

https://www.partspak.com/productcart/pc/Perko-0635DP0-Inlet-Check-Valve-124289p592534.htm

5 minutes ago, Max Tune said:

What size do you need?

https://www.partspak.com/productcart/pc/Perko-0635DP0-Inlet-Check-Valve-124289p592534.htm

They are offered in 1.5 and 2"  The Amazon link is for the 1.5, does not say anywhere, had to check the part number. Ordered one this morning, will post how it works. Thanks again to all!!

Biggest thing I've seen about flatbeds and filler necks is make sure the vent hose has a downhill run fully to the tank from the neck. Make sure that no fuel can puddle in a sag of the hose. Then do the filler hose the same way. Thor is a flatbed too but no issues with filling even with a high volume diesel pump found at most truck stops.

Installed the new valve, worked as advertised ! One complaint is that it is a flapper valve with a spring keeping it shut. I add 2 stroke oil to my fuel, usually after I'm done filling. Being the valve stays shut, I now feel the need to do a rough calculation as to how much oil to add, and do so before I start fueling. The valve is not a tight fit in the hose, so I supposed the oil would eventually work it's way into the tank if I add more after fueling.

On 4/20/2023 at 11:02 AM, Mopar1973Man said:

Biggest thing I've seen about flatbeds and filler necks is make sure the vent hose has a downhill run fully to the tank from the neck. Make sure that no fuel can puddle in a sag of the hose. Then do the filler hose the same way. Thor is a flatbed too but no issues with filling even with a high volume diesel pump found at most truck stops.

 So are you running some sort of valve on your flatbed?