Eaton AE99115E - Aeroquip 1800 Hose Half -4 (1/4")

The Eaton AE99115E is an Aeroquip 1800 Series Hose Attaching Half in Style II configuration, AN size -4 (1/4"), for petroleum-based MIL-H-5606 and MIL-H-83282 hydraulic fluids service. Style II enables hose-to-hose quick-disconnect configurations — both mating halves are hose-end fittings, creating a detachable connection point in the middle of a flexible hydraulic hose assembly. Rated to 3000 PSIG with stainless steel construction and Nitrile seals provide reliable compatibility with petroleum-based hydraulic media.

Style II Hose-to-Hose Configuration Advantages

• Both coupling halves are hose-end attachments — no fixed bulkhead or panel fitting required
• Enables mid-hose disconnection for component removal or circuit isolation
• Particularly useful in cramped aircraft spaces where a panel-mounted bulkhead half is impractical
• The compact 1/4-inch bore delivers precise, low-volume flow control for routing through servo actuator circuits applications

Stainless steel construction gives the AE99115E superior resistance to corrosion and hydraulic fluid degradation throughout -65°F to +275°F (-54°C to +135°C). The low-profile ratchet lock mechanism — quarter-turn actuation locks the coupling under vibration and pressure cycling with minimal actuation force provides secure locking without tools. Certified to MIL-C-25427A and AS1709. Compatible with mil-h-5606 (red) and mil-h-83282 (fire-resistant) hydraulic fluids.

Hose Assembly and System Integration Uses

• Mid-hose quick-disconnect points in aircraft hydraulic hose assemblies
• Equipment removal break points in hydraulically powered systems
• Flexible hydraulic hose routing through aircraft structures
• Test and maintenance circuit isolation for servo actuator circuits, instrument hydraulic lines, and brake accumulator systems