2 EATONAerospace Group TF100-113C September 2013 Eaton’s Carter product line includes Model 64800 Coupler, designed to supersede earlier Model 60700-1. It is used for air reference pressure control systems. Many new features were incorporated into the design of Model 64800 at the request of long-time users of Model 60700-1, the standard of the industry for over 35 years. Features • Mates all standard hydrant valves in accordance with API 1584 • Air/fuel sense ports parallel to outlet • All ports with straight O-ring sealed threads • 2½, 3 and 4 inch NPT or BSPP outlet threads available • Air bleed under sealed screw • Closing time adjustment accessible without removal of air port fitting • Studs used for connecting lower half, reducing chance of over-tightening connecting fasteners Envelope Dimensions • Existing Model 60700-1 couplers can be retrofitted to gain most new features by changing only the elbow half • Outlet of elbow flanged to accept various outlet male adapter fittings. Options to mate to older quick disconnects (QD) available, reducing maintenance costs if the male fitting is damaged. • Optional carrying handles available. Transverse mounting standard, parallel optional. A second QD mounted handle is also available. • Carriage affixed by studs. No special length bolts required, reducing chance of error when carriage is added in the field. • Port to connect to hydrant provided on coupler — no special hose assembly required • Parts common to 3 inch inline valves and Model 60700-1 used for less costly maintenance • Lower half of coupler (connecting unit to hydrant) has not been changed Design Concepts Dimensions shown in inches (millimeters) • System proof pressure of up to 450 psig (31.026 bar) • Suitable for operating pressures of 200 psig (13.790 bar) • Changes have been made without an increase in weight • Outlet QD has thumb latches for easy disconnecting without use of any tools Operation Information Model 64800 coupler is a direct spring loaded pressure control unit that is controlled by the air reference pressure provided from the vehicle system. It is nearly identical in design as the widely used Model 60700-1 with changes to improve operational handling and downsizing of the elbow to keep the weight the same. The slight increase in pressure drop, 3 psi (.207 bar) at 600 USgpm (2,271 l/min), caused by this is insignificant. A sealed screw outside of the air hose fitting provides closing time adjustment. A sealed screw is also used to bleed the unit of air. Technical Data • Inlet mates any standard hydrant valve in accordance with API 1584 • Typical weight (Model 64800FW2L - see Ordering Data on page 3 for explanation of model number) — 34 lbs (15.42 kg) • Pressure drop across mating Model 60554 hydrant valve and Model 648002L coupler— 24 psi (1.655 bar) • Pressure drop across mating Model 60505 adapter and Model 648002L coupler — 24 psi (1.655 bar) at 1100 US gpm (4163 l/ min) • Operated by vehicle air reference pressure
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