Loading Diesel - what valve do we need on the trailer

Discussion in 'Tanker, Bulk and Dump Trucking Forum' started by bonder45, Jul 7, 2022.

  1. mustang190

    mustang190 Road Train Member

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    If you go to a loading rack and even if you probe out your in big trouble. I think today it will be hard to find a load rack that doesn’t use a Skully system.
     
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  3. RockinChair

    RockinChair Road Train Member

    Do you mean the camlock fitting that the rack's vapor recovery hose attaches to?

    [​IMG]
     
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  4. ErieMcDreary

    ErieMcDreary Medium Load Member

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    The Scully system shuts off the fuel loading at the rack before it can get to the vapor vent system, if it's working properly.
    Fuel should never come out the vapor! You may get some condensation, but not fuel.
     
  5. HiramKingWilliams

    HiramKingWilliams Medium Load Member

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    I don’t understand your question. A valve on a vent line that prevents diesel from coming out just doesn’t make any sense to me.

    The Scully is an overfill protection device.

    Where exactly would you place the valve you’re asking about?
     
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  6. bonder45

    bonder45 Road Train Member

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    My understanding was the scully system was attached to an automatic vent that closed.

    But after getting a few more posts on this thread the scully system just shuts the flow going into the trailer which makes much more sense.
     
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  7. Lazer

    Lazer Heavy Load Member

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    ‘Scully’ is the brand name of an overfill prevention system.
    To best of my knowledge, no loading terminals that I have been to, are even equipped to do ‘top loading’ anymore.
    Your trailer(or tank wagon) will need to be tested, commonly called the ‘V I K certification’. Without a properly operational overfill protection system, and a ‘vessel’ that passes the V I K certification, you won’t be able load anywhere around here.
     
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  8. bonder45

    bonder45 Road Train Member

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    All my trailers have proper VIKPUC tests

    Just looking to get that #### valve to load diesel.
     
  9. RockinChair

    RockinChair Road Train Member

    Maybe these will help?
    [​IMG]
    [​IMG]
    [​IMG]
     
  10. ErieMcDreary

    ErieMcDreary Medium Load Member

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    The Scully is not a valve, it is a sensor which detects when fuel reaches a pre-set level inside the compartment and shuts down the loading to prevent overfill.
     
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