Part Number: FS2406

SAE ORFS Swivel Nut Reducer / Expander

Product Overview

The Delphi Fittings Part FS2406 is an SAE O-Ring Face Seal (ORFS) Swivel Nut Reducer or Expander. This versatile straight adapter is designed to connect two male ORFS fittings or prepared tube ends of different sizes. It features female ORFS swivel nuts on both ends, each with the precision-machined flat face required for the ORFS O-ring seal. This dual-swivel design allows for easy alignment and tightening of both connections independently, without imparting torsional stress on the connected hoses or tubes, which is especially useful when adapting between different line sizes. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the FS2406 is built to SAE J1453 / ISO 8434-3 standards, ensuring a reliable, leak-free connection in high-pressure hydraulic systems.

Key Features & Specifications

Material	High-Grade Carbon Steel
End 1 Configuration	Female SAE O-Ring Face Seal (ORFS) Swivel Nut (conforming to SAE J1453 / ISO 8434-3)
End 2 Configuration	Female SAE O-Ring Face Seal (ORFS) Swivel Nut (conforming to SAE J1453 / ISO 8434-3) - Different size to End 1
Body Style	Straight Reducer/Expander Union, typically with a central hexagonal (hex) section or flats for wrench engagement.
Sealing Mechanism	Both ends achieve a metal-to-metal seal via an O-ring (supplied by the mating male ORFS fitting) compressed against the flat face inside each female ORFS swivel nut.
Corrosion Protection	Standard Zinc Plating for enhanced durability and resistance to environmental corrosion.
Primary Function	To provide a straight, high-integrity, and leak-proof connection between two male ORFS fittings or prepared tube ends of different sizes, either reducing or expanding the line size, with the convenience of swivel nuts on both ends.
Working Pressure	Suitable for high-pressure hydraulic systems. The pressure rating is determined by the smaller ORFS connection size and system conditions.

Commonly Available Sizes (Part #FS2406 Series)

Delphi Fittings offers the FS2406 SAE ORFS Swivel Nut Reducer/Expander in various size combinations. The part number typically indicates the sizes of the two female ORFS swivel ends (e.g., -06 to -04 indicates a reducer from 3/8" ORFS to 1/4" ORFS).

Examples include (Female ORFS Swivel x Female ORFS Swivel):

FS2406-06-04: 3/8" (-06) ORFS Female Swivel x 1/4" (-04) ORFS Female Swivel (Reducer)
FS2406-08-06: 1/2" (-08) ORFS Female Swivel x 3/8" (-06) ORFS Female Swivel (Reducer)
FS2406-10-08: 5/8" (-10) ORFS Female Swivel x 1/2" (-08) ORFS Female Swivel (Reducer)
FS2406-12-08: 3/4" (-12) ORFS Female Swivel x 1/2" (-08) ORFS Female Swivel (Reducer)
FS2406-12-10: 3/4" (-12) ORFS Female Swivel x 5/8" (-10) ORFS Female Swivel (Reducer)
FS2406-16-12: 1" (-16) ORFS Female Swivel x 3/4" (-12) ORFS Female Swivel (Reducer)
Expander configurations (e.g., FS2406-04-06) may also be available.

Note: This adapter connects to male ORFS fittings, which provide their own O-rings. For unlisted size combinations, specific material requirements (e.g., stainless steel), or other custom needs, please contact our sales team.

Applications

The Part FS2406 SAE ORFS Swivel Nut Reducer/Expander is essential for:

Connecting two hydraulic lines or components with male ORFS ends of different sizes, allowing for a step-up or step-down in line diameter.
Modifying existing hydraulic systems where a change in ORFS fitting size is required for new components or altered flow requirements.
Use in demanding hydraulic applications where the superior leak protection of ORFS connections is necessary, and the flexibility of dual swivel nuts simplifies installation of different sized lines.
Common in mobile equipment, industrial machinery, and other systems utilizing ORFS technology, where adapting between sizes is needed without compromising seal integrity.

Installation & Usage Guidelines

Thoroughly inspect the flat sealing faces inside both female ORFS swivel nuts of the FS2406 adapter, as well as the O-rings and flat faces of the mating male ORFS fittings. Ensure all surfaces are meticulously clean, undamaged, and free from any contaminants.
Verify that the O-rings on the mating male ORFS fittings are the correct size and material (e.g., Buna-N, Viton®) for the application's fluid, temperature, and pressure. Ensure the O-rings are correctly lubricated.
Align the adapter with the two male ORFS fittings that are to be connected.
Hand-tighten both female ORFS swivel nuts onto the respective male ORFS ends until the flat faces make contact with the O-rings.
Use appropriately sized wrenches. While holding the central hex or flats of the FS2406 adapter body stationary with a backup wrench, tighten each female ORFS swivel nut to the manufacturer's recommended torque value or by using the "Flats From Wrench Resistance" (FFWR) method if specified for the respective ORFS size.
The dual swivel nuts allow each connection to be tightened independently and oriented correctly without transferring torsional stress to the connected hoses or tubes.
After assembly and system pressurization, carefully inspect both connections for any signs of leakage.

Why Choose Delphi Fittings Part FS2406?

Versatile Size Adaptation: Enables reliable connection between male ORFS fittings of different sizes, functioning as either a reducer or an expander.
Superior Leak Prevention: Both ends utilize the O-Ring Face Seal design, providing exceptionally reliable, leak-free connections suitable for high-pressure and high-vibration hydraulic applications.
Maximum Installation Flexibility: Dual female ORFS swivel nuts allow for easy alignment and stress-free tightening of both connections, ideal for complex or tight installations.
Zero Clearance Assembly Benefit: Maintains the ORFS advantage of allowing component installation or removal without needing to significantly displace adjacent lines.
Durable Carbon Steel Construction: Manufactured from high-grade carbon steel for excellent strength and longevity in typical industrial and mobile hydraulic environments.
Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and other environmental corrosive factors.
Full Adherence to Industry Standards: Meets SAE J1453 / ISO 8434-3 specifications, ensuring compatibility and interchangeability.
Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.

Get a Quote for Part FS2406 - SAE ORFS Swivel Nut Reducer / Expander

For reliably adapting between different ORFS line sizes with maximum installation flexibility and superior sealing, the Part FS2406 Reducer/Expander is an excellent choice. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.

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