2 EATONAerospace Group TF100-125C June 2013 Eaton’s Carter product line includes several API style hydrant couplers. Model 64802 4-Inch API Style Hydrant Coupler is nearly identical to the widely used Eaton Model 60700-1 and the newer Model 64800 coupler. However, certain features have been modified to allow it to be operated digitally. Features • Mates all standard hydrant valves in accordance with API Bulletin1584 • Folding operating handle optional • Product selection feature available • 2, 2½, 3 and 4-inch NPT or BSPP outlet threads available • Studs used for connecting lower half and to affix the optional carriage assembly Envelope Dimensions Design Concepts Dimensions shown in inches (millimeters) • Outlet of elbow flanged to accept various outlet male adapter fittings, reducing maintenance costs if male fitting is damaged • Options to mate to older Quick Disconnects (QD) available • Thumb latches on QD — easier to remove from hose with no tools • Optional safety clip available on 2½ and 3-inch QDs • Optional carrying handle available at disconnect • Lower half of coupler (connecting unit to hydrant) has not been changed • Suitable for operating pressures of 200 psig (13.79 bar) and system proof pressure of up to 450 psig (31.026 bar) • Pressure drop — 24 psi (1.655 bar) across mating Model 60554 hydrant valve and coupler Operation Information Connection to the hydrant valve is in accordance with the industry API Bulletin 1584 interface standard. Eaton’s Model 64802 is a direct spring loaded pressure control unit that is controlled Eaton’s exclusive Digital Pressure Control System. Full details of this system are outlined in Model 64235 brochure (TF100-104). Fuel pressure presented to the operating chamber through the command hose from the vehicle mounted solenoid manifold assembly (Model 64302, 64303 or 64304, as required by the system design) causes the coupler control elbow valve to open. This establishes flow through the system. Digital commands to the manifold further command the coupler to trim to a position to effect control of the pressure in the system. No air pressure is required to achieve system control, unlike the earlier Model 60700-1 and newer Model 64800, or couplers made by competing manufacturers. Pressure control is also achieved without the need for confusing venturi systems. There are no adjustments required or possible on the coupler. All pressure control adjustments are made on the control module of Eaton’s Model 64235 Digital Pressure Control System.
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