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Carbon steel 90-degree elbow hydraulic coupling with male NPTF and female NPTF ends

Eaton

Eaton Aeroquip FF5540-2416S 90° hydraulic hose coupling

SKU CH-0NG9-NYTYG

A 90-degree hydraulic hose coupling connecting 1-1/2 inch NPTF male to 1 inch NPTF female, rated to 6,000 psi with carbon steel construction

  • 90-degree elbow enables tight routing in hydraulic systems
  • 6000 psi rating handles high-pressure fluid power applications
  • Male NPTF 1-1/2 in to female NPTF 1 in connects mismatched port sizes
  • Carbon steel 12L14/12L15 construction resists wear and corrosion
  • 41 in overall length fits compact installation spaces

Hydraulic Hose Coupling 90° Elbow

This Eaton Aeroquip FF5540-2416S is a 90-degree elbow adapter for hydraulic hose assemblies. It connects a 1-1/2 inch male NPTF thread to a 1 inch female NPTF thread. The carbon steel construction suits industrial fluid power systems requiring a rigid directional change.

6000 psi Working Pressure Rating

The fitting is rated for 6000 psi, which determines its suitability for high-pressure hydraulic circuits. Both NPTF connections use a 37-degree flare seat per SAE/JIC standards. The overall length measures 3.41 inches, defining the installed envelope.

Carbon Steel Durability Under Pressure

The 12L14 and 12L15 carbon steel body resists deformation under sustained 6000 psi loads without the stress relaxation seen in lower-grade alloys. The rigid 90-degree geometry maintains flow alignment during continuous operation. This coupling is not for applications requiring crimpable hose ends or integrated O-ring seals.

Highlights

  • 90-degree elbow enables tight routing in hydraulic systems
  • 6000 psi rating handles high-pressure fluid power applications
  • Male NPTF 1-1/2 in to female NPTF 1 in connects mismatched port sizes
  • Carbon steel 12L14/12L15 construction resists wear and corrosion
  • 41 in overall length fits compact installation spaces

Specifications

BrandEATON AEROQUIP

Questions about this item

What does the 6,000 psi rating mean once the coupling is installed in a hydraulic system?

The 6,000 psi rating indicates the maximum working pressure this 90° elbow can withstand when properly assembled with compatible hose and fittings.

How does the NPTF thread standard affect sealing and compatibility in practice?

NPTF threads are dryseal pipe threads designed to seal without tape or compound when mated with matching NPTF ports, capping leakage at the rated pressure.

What clearance and port sizes are needed to mount this 3.41 in long 90° elbow?

It requires a 1-1/2 in male NPTF port on one side and a 1 in female NPTF port on the other, with enough space for the 3.41 in overall length and 90° bend radius.

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