Assembly shall include 100 mm 4 inch diameter Schedule 80 ASTM B 241/B 241M,
alloy 6061-T6 nominal 7 meters 24 feet aluminum pipe arm sections.
Components shall be constructed of aluminum alloy or stainless steel.
Swivel joints shall be constructed of aluminum stainless steel and shall be
NAVFAC/NAVAIR approved. Anchor end swivel joints, intermediate swivel
joints, and hose end swivel joints shall have 100 mm 4 inch flanged
connections capable of 360-degree rotation. Intermediate and end swivel
joints shall have 200 mm 8 inch diameter solid oil resistant polymer tiers.
The assembly shall also include an emergency dry break swivel coupling, a
3 meters 10 foot length of [80] [50] mm [3] [2] inch aircraft fueling hose,
a dry break swivel coupling with 60-mesh strainer, and a 345 kPa (gage) 50
psig hose end regulator, and SAE AS5877 nozzle. Provide a draw bar or pull
cable with handle for positioning the pantograph. Connect the hose to the
last swivel in the pantograph assembly through a [80] [50] mm [3] [2] inch
emergency breakaway coupling to allow dry breakaway at 890 Newton 200 pounds
tensile loading. The assembly shall be factory-assembled including
required gaskets, brackets, hose storage rack, nozzle holder, and support
casters. Pantograph assemblies shall be capable of developing the total
length as indicated, including the hose. Provide assemblies which have an
electrical conductivity reading throughout the entire length of the
pantograph including hardware and nozzle. The approved swivels are
Aeroquip single plane, Chiksan 2-plane, EMCO Wheaton single plane and
CLA-VAL 2-plane.
2.15.5.7
Emergency Breakaway
Unit shall operate independently of internal pressure and separate at 890
(plus 222 to minus 111) Newton 200 (plus 50 to minus 25) pounds tensile
pull and be capable of reinstallation without replacement parts.
2.15.5.8
Fueling Hose
NFPA 407 and API Std 1529, Grade 3, Type A or Type C, semi-hardwall, 80 mm
3 inch hose designed for use with the specified fuel for a working pressure
of 2068 kPa (gage) 300 psig. Hose shall be constructed of braided
synthetic cord surrounded by an interior rubber tube and an exterior rubber
cover. Provide permanent brass couplings and bonding wire wrapped a
minimum of 10 coils around the exterior of the hose and connected to both
2.15.5.9
Nozzles
SAE AS5877, 65 mm 2.5 inch fueling nozzle of the type designed for the
single point fueling of aircrafts at a flow rate of 38 liters per second
600 gpm with a maximum pressure drop of 207 kPa 30 psi, and a 65 mm 2.5 inch
hose end regulator to limit the downstream pressure to 379 kPa (gage) 55
psig maximum, a dry break coupling with 60-mesh stainless steel strainer,
and fuel sample connection tapping.
2.15.5.10
Nozzle Adapters
Provide 65 mm 2.5 inch nozzle adapter with self-closing valve in accordance
with MS 29514 and 100 mm 4 inch flange mounting and dust cap.
2.15.5.11
Pressure Gage Quick Disconnect and Fuel Sample Connectors
Quick disconnects shall be compatible throughout the piping systems, fit in
9.50 mm 0.375 inch ports and extend outward less than 21.30 mm 0.84 inch
from the port boss. Provide an aluminum dust plug with chain. [NOTE:
SECTION 15194N
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