MIL-T-62032 Trucks, Tank: Fuel Servicing And Aircraft Fuel Servicing, 1,000 To 4,000 Gallon, Diesel And Gasoline Engine Driven, 16,000 To 50,000 Pounds Gvw, 4X2, 4X4, 6X4, And 6X6, Modified CommercialThis specification covers diesel and gasoline engine driven, four-wheel, two- or four-wheel drive, and six-wheel, four- or six-wheel drive, single or dual delivery fuel servicing and aircraft fuel servicing tank trucks, with product capacities from 1,000 to 4,000 gallons, having minimum gross vehicle weights GVW of 16,000 to 50,000 pounds for normal operating conditions. Vehicles procured under this specification are commercial items which are warranted by the manufacturer as specified in acquisition documents.

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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.