Blkhd Union #4flare/#4fl

The Blkhd Union #4flare/#4fl bulkhead fitting from AEROQUIP is a precision hydraulic connector engineered for systems requiring reliable pressure-tight seals at bulkhead panel transitions. This straight-through fitting serves industrial, aerospace, and automotive hydraulic applications where space constraints or panel-mounted configurations demand a compact, integrated solution. Technicians and system integrators rely on bulkhead fittings to eliminate external hose runs and reduce assembly complexity while maintaining full system integrity under load.

Constructed from high-grade steel with zinc oxide protective finish, the Blkhd Union #4flare/#4fl features dual 4 AN male ports—one for external hose connection and one for internal manifold or component mounting. The straight configuration minimizes pressure loss and turbulence, critical for maintaining system efficiency in high-flow applications. AEROQUIP's manufacturing standards ensure consistent 37° flare seat engagement, creating a dependable seal that resists vibration-induced loosening and thermal cycling stress common in demanding industrial environments.

This compact fitting (2.35 × 1.1 × 3.7 inches, 0.12 lbs) integrates seamlessly into custom hydraulic panels, mobile equipment, and OEM manifold assemblies where standard external couplings are impractical. Installation requires a standard wrench or flare nut wrench—no specialized tools needed. The zinc oxide finish provides corrosion resistance suitable for outdoor or marine environments, making this bulkhead union a long-term investment for any 4 AN hydraulic system prioritizing reliability, cleanliness, and compact design.