#16 Union

The #16 Union adapter fitting is a critical component for hydraulic and pneumatic systems that demand reliable straight-line connections between two 16 AN male ports. Designed for professionals and enthusiasts working with high-pressure fluid transfer applications—from custom automotive cooling systems to aerospace and industrial equipment—this adapter eliminates the need for bulky elbows or multiple fittings, streamlining your plumbing while maintaining system integrity under demanding conditions.

Constructed from aerospace-grade aluminum and finished in protective blue anodize, the #16 Union provides corrosion resistance and durability across diverse environments—whether exposed to engine bay heat, moisture, or UV exposure. The straight male-to-male configuration ensures zero offset, allowing hoses and lines to run parallel and true without stress concentrations that compromise seal integrity. Blue anodized aluminum also offers weight savings critical in motorsports and aircraft applications, while the precision-machined threads guarantee leak-free performance under pressure cycling and thermal expansion.

This fitting is ideal for builders, mechanics, and engineers assembling custom cooling loops, fuel systems, or brake lines where 16 AN (nominal 1-inch) tubing is standard. Its compact footprint—measuring just 2.5 × 1.8 × 3.65 inches and weighing only 0.17 lbs—makes it perfect for space-constrained engine bays and tight panel builds. Compatible with any hose or adapter equipped with 16 AN male threads, the #16 Union delivers the reliability and finish quality expected in professional-grade hydraulic and pneumatic assemblies.