2 EATONAerospace Group TF100-128C May 2013 Eaton’s Carter Model 64910 4-inch API Hydrant Coupler is the latest coupler design and supersedes Models 64900 and 60700-1. It is used for air-reference pressure control systems. The lower half of Model 64910 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. Two additional coupler models that include this new lower half are also available, Model 64912 for digital pressure control systems, and Model 64913, which is electro-hydraulically controlled. Earlier coupler Models 64900 and 60700-1 can be retrofitted to gain these new features by changing only the lower half. Features yy Mates with all adapters and all standard hydrant valves in accordance with API Bulletin 1584 yy Outlet of elbow is flanged to accept various outlet male adapter fittings. Options to mate with older quick disconnects (QDs) available, reducing maintenance costs if male fitting is damaged. yy 3 and 4-inch NPT or BSPP outlet threads available yy Air/fuel sense ports parallel to outlet yy All ports with straight O-ring sealed threads 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 External collar locking device eliminated yy Optional carrying handles available. Transverse mounting standard. A second QD-mounted handle is also available. yy Carriage affixed by studs. No special length bolts required, reducing possibility of error 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 Design changes have not increased weight Operation Information Model 64910 is a direct springloaded pressure control unit that is controlled by the air-reference pressure provided from the vehicle system. Operation of Model 64910 is nearly identical to earlier Models 64900 and 60700-1, but the redesigned lower half provides improved operational handling. A sealed screw outside the air hose fitting provides closing time adjustment. A sealed screw is also used to bleed the unit of air. Technical Data yy Weight — (basic coupler) 29.0 lbs (13.154 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 with Model 60554 hydrant valve (see chart on page 3 for more data) Design Concepts Envelope Dimensions Dimensions shown in inches (mm)
RkJQdWJsaXNoZXIy NDE1MjE4