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|  MIL-T-62032H
3.8.1.2 Dry break coupling. A dry break coupling shall be provided for the hose
connection to the fuel nozzles specified in 3.8.2.1, 3.8.2.2 and 3.8.2.3. The coupling shall permit
full flow during fueling operations and shall seal the dispensing hose assembly prior to
connection or disconnection of any of the fuel nozzles. The nozzles shall be incapable of
connection or disconnection to the hose assembly unless the coupling is in the closed and locked
position. The coupling shall incorporate a positive lock mechanism to prevent disconnection
from the nozzles through mishandling or through dragging the delivery hoses in either direction
during fueling operations. The coupling shall be compatible with the emergency dry break
connector of 3.8.1.1. The coupling shall be similar or equal to Aeroquip Corporation Part
number AE82096R.
3.8.2 Nozzles.
3.8.2.1 Overwing nozzle. A 1.5 inch overwing nozzle conforming to MIL-N-87963,
Type MD-3, shall be provided for the 2-inch servicing hose. The overwing nozzle assembly
shall permit interchange with the nozzles specified in 3.8.2.2 and 3.8.2.3 by connection to the dry
break coupling specified in 3.8.1.2. The overwing nozzle assembly shall be similar or equal to
Aeroquip Corporation part number AE83956R. A screw-in nozzle extension of noncollapsible
teflon hose shall be provided with the nozzle to provide defueling capability for helicopter fuel
tanks with depths of up to 30 inches. The nozzle extension shall be similar or equal to Aeroquip
Corporation part number AE706517-1
3.8.2.2 Closed-circuit nozzle. A 1.5 inch closed-circuit nozzle meeting the performance
requirements and the 15 psig pressure regulating requirements of MIL-N-52747 shall be
provided for the 2-inch servicing hose. The outlet end of the nozzle shall be capable of
connection to the fuel inlet receptacle specified in MIL-N-52747 as the helicopter mounted
closed-circuit fuel servicing connection. The closed-circuit nozzle shall permit inter-change with
the nozzles specified in 3.8.2.1 and 3.8.2.3 by connection to the dry break coupling specified in
3.8.1.2 and the emergency dry break connector specified in 3.8.1.1. The nozzle shall be similar
or equal to Aeroquip part number AE83501R.
3.8.2.3 Underwing single point pressure servicing nozzle. An underwing single point
pressure servicing nozzle conforming to the functional and performance requirements of
MIL-N-5877 (designated type D-l), or a commercial aviation refueling nozzle capable of
connection to the International Standard bayonet adapter, shall be furnished for the 2-inch
servicing hose. The underwing nozzle assembly shall permit interchange with the nozzles
specified in 3.8.2.1 and 3.8.2.2 by utilizing a dry break coupling as specified in 3.8.1.2.
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