Temperature-compensated meters should be in-
stalled at point of custody transfer. Meters used for
services such as fueling of aircraft, motor vehicles,
and boats or loading of tank trucks or tank cars are
positive displacement meters. Turbine meters may be
used for larger volume steady transfers such as load-
ing of ships, barges, or pipeline transfers.
FUEL PRESSURE GAGES
Pressure gages must be easy to read and accurate
within 1 psi, with graduations in 1-psi units.
All sampling connections are the flush-type, dry-
break, quick-disconnect (Gammon fittings) with dust
caps. Fuel-sampling and pressure-testing connections
are installed at the following locations:
Inlet and outlet sides of filter/separators and
Each side of a block valve, so that the fuel
remaining in each portion of a fuel transfer
pipeline can be sampled.
All hoses used for aviation fuel service at shore
activities should be semihard-wall, noncollapsible
hose. The diameter of the hose must be compatible
with the desired delivery rate to the aircraft. Unless
otherwise specified, aircraft delivery hose on refueler
trucks must be a minimum of 50 feet long.
Shore-base hoses contain no electrical bond or
bonding wire through the center of the hose. Where
two hose assemblies are attached to the same outlet
or source of fuel, each hose assembly must have its
own shutoff valve in the piping upstream of the
An emergency dry-breakaway coupling should be
installed on the refueling hose at or near the place
where the hose attaches to refueling equipment piping
or the hose reel. This device is required for each direct
refueling system pantograph and is recommended for
all other installations.
A dry-break quick-disconnect coupling is in-
stalled at the nozzle end of the hose and has a 60- or
100-mesh screen that is readily accessible without the
use of tools.
HOSE END PRESSURE
The single point pressure refueling nozzle assem-
bly includes a hose end pressure regulator set for a
maximum of 55 psi.
The pressure refueling nozzles used for shore re-
fueling are the same as for afloat refueling. The typi-
cal nozzle is the Carter D-1 or MD-1.
The overwing (gravity) nozzles used for shore
refueling are also the same as used for afloat refuel-
ing. See chapter 5 for details on both types of nozzles.
TRUCK FILL STANDS
The loading rack has a separate loading system
for each grade of product to be handled. The equip-
ment required at a truck fill stand for aviation fuel is
SPR (pressure) nozzle with dry-break quick-dis-
connect and strainer.
Loading hose approximately 10 feet long or me-
chanical loading arm with nonlubricated swivels.
Loading-hose fuel-thermal-pressure relief valve.
Diaphragm-operated two-stage control valve (low
flow/high flow) with adjustable time delay to pre-
vent the high-flow pilot from opening until 1 min-
ute after start of fuel flow.
Meter with rated capacity equal to the maxium flow
rate of the loading station. Temperature-compen-
sating positive displacement meters are recom-