2 Eaton’s Carter product line includes Model 64900, designed to supersede earlier Model 60700-1. It is used for air reference pressure control systems. Two other versions are also available, Model 64902 for digital pressure control systems, and Model 64903, which is electro-hydraulically controlled. Many new features have been incorporated at the request of long-time users of the earlier Model 60700-1 coupler, the standard of the industry for over 35 years. Features yy Mates all adapters in accordance with API Bulletin 1584 yy Air/fuel sense ports parallel to outlet yy All ports with straight O-ring sealed threads yy 3 and 4 inch NPT or BSPP outlet threads available yy Air bleed under sealed screw yy Closing time adjustment accessible without removal of air port fitting yy Studs used for connecting lower half, reducing chance of over-tightening connecting fasteners yy Earlier Model 60700-1 couplers can be retrofitted to gain most new features by changing only the elbow half yy Outlet of elbow is flanged to accept various outlet male adapter fittings. Options to mate older quick disconnects (QDs) available, reducing maintenance costs if male fitting is damaged. yy Thumb latches on QD — easier to remove from hose with no tools. Safety locking ring available as an option. EATONAerospace Group TF100-120C September 2013 Design Concepts Flow Rates Technical Data yy Outlet threads available in either 3 or 4 inch NPT or BSPP style yy Weight — (Basic coupler) 27.1 lbs (12.292 kg) yy Operated by vehicle air reference pressure yy Working pressure — 200 psi (13.793 bar) yy Proof pressure — 450 psi (31.034 bar) yy Closing Time — 2-5 seconds (adjustable) yy Opening time — 5-10 seconds (no adjustment) yy Overshoot - 50 US gal. maximum at 1,000 USgpm yy Air pressure operated — nominal bias (air pressure required above control pressure) — 25 psi (1.724 bar). Bias increases to approximately 33 psi (2.276 bar) at flow rates up to 1,200 USgpm. yy Fully open pressure drop — 21 psi (1.448 bar) at 1,000 USgpm when mated to Model 60554 hydrant valve (see chart below for more data) Curve 1 Typical Model 64900 with 4 inch QD outlet options Curve 2 Typical Model 64900 with 3 inch QD outlets options yy Optional carrying handles available. Transverse-mounting standard, parallel optional. A second QD-mounted handle is also available. yy Carriage affixed by studs. No special length bolts required, reducing chances for errors when carriage is added in the field. yy Port to connect to hydrant provided on coupler. No special hose assembly required yy Parts common to 4 inch inline valves and Model 60700-1 coupler used for less costly maintenance yy Lower half of coupler (connecting unit to hydrant) has not been changed yy Design changes have not increased weight yy Suitable for operating pressures of 200 psig (13.793 bar) and system proof pressure of up to 450 psig (31.034 bar) yy Mates with all standard hydrant valves in accordance with API Bulletin 1584 yy Pressure drop — 21.0 psi (1,448 bar) across mating Model 60554 hydrant valve and Model 64900 coupler at 1000 USgpm (3,785 l/min) Operation Information Model 64900 is a direct springloaded pressure control unit that is controlled by the air reference pressure provided from the vehicle system. It is nearly identical in design to the widely used Model 60700-1 with changes to improve operational handling of the elbow to keep the weight the same. A sealed screw outside the air hose fitting provides closing time adjustment. A sealed screw is also used to bleed the unit of air.
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