4 TERMS & DEFINITIONS
TERM
DEFINITION
One of possibly several cargo carrying portions of the cargo tank motor vehicle.
COMPARTMENT
DOME RAIL (VAPOR RAIL)
two structural members that run the length of the tank on the top. One is often used as a vapor recovery manifold.
DRY-BRAKE FITTING ON/OFF LOADER
oduct to be both
loaded and unloaded.
The components and system that facilitate communication with the loading rack to protect against exceeding the compartment volume when bottom-loading. Often referred to as full trailer. It is a trailer with wheels at the front and rear. The front axle can rotate because there is a roller bearing (turntable) between the axles and the
OVERFILL PROTECTION
PULL TRAILER
Piping that extends to the street-side of the trailer in addition to the curb-side.
T-BAR
TURNTABLE OR ROLLER BEARING
The turntable is located on the front of a pull trailer and is designed with roller bearings so that the lower frame and axles can rotate when the trailer is turning.
UNDERCARRIAGE OR SUBFRAME
Support structure for kingpin plate and running gear.
Space between double bulkheads.
VOID SPACE
The components and system that facilitate transporting vapors to and from the tank. This piping design facilitates loading through the top pipe of the Y-branch and discharging product through the bottom pipe.
VAPOR RECOVERY
Y-BRANCH
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