2 EATON Aerospace Group TF100-129C June 2013 Eaton’s Carter product line includes several API style hydrant couplers. Model 64810 is the latest coupler design and it supersedes Models 64800 and 60700-1. It is used for air reference pressure control systems. The lower half of Model 64810 has been completely redesigned. This new lower half incorporates three (3) detent pins, an internal collar locking device and collar lifting handles (both “short” (standard) or “tall” [Option “T”]), providing improved ergonomics and operational handling during disconnect. Earlier coupler Models 64800 and 60700-1 can be retrofitted to gain these new features by changing only the lower half. Envelope Dimensions Features yy Mates with all standard hydrant valves in accordance with API 1584 yy Air/fuel sense ports parallel to outlet yy All ports with straight O-ring sealed threads yy 2½, 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 External collar locking device eliminated yy Studs used for connecting lower half, reducing chance of over-tightening connecting fasteners yy Outlet of elbow flanged to accept various outlet male adapter fittings. Options to mate with older quick disconnects (QD) available, reducing maintenance costs if the male fitting is damaged. Design Concepts Dimensions shown in inches (mm) yy Outlet QD has thumb latches for easy disconnecting without use of any tools 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 chance of error when carriage is added in the field. yy Port to connect to hydrant provided on coupler — no special hose assembly is required yy Changes have been made without an increase in weight Operation Information Model 64810 Hydrant Coupler is a direct spring loaded pressure control unit that is controlled by the air reference pressure provided from the vehicle system. Operation of Model 64810 is nearly identical to earlier models 64800 and 60700-1, but the redesigned lower half provides improved operational handling. Technical Data yy Weight — (basic coupler) 27 lbs (12.247 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 — 40 US gal. maximum at 800 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 USgm yy Fully open pressure drop — 24 psi (1.655 bar) at 1,100 USgpm when mated to Model 60554 hydrant valve
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