DELPHI FITTINGS
Part Number: FS7504
SAE ORFS Swivel Nut Straight Adapter
Product Overview
The Delphi Fittings Part FS7504 is an SAE O-Ring Face Seal (ORFS) Swivel Nut Straight Adapter, often referred to as a female ORFS union or double swivel adapter. This fitting is designed to connect two male ORFS fittings or prepared tube ends in a straight, in-line configuration. A key characteristic of the FS7504 is that it features female ORFS swivel nuts on both ends, each with the precision-machined flat face essential for creating the ORFS O-ring seal. The dual swivel nuts provide maximum flexibility during installation, allowing each connection to be independently oriented and tightened without imparting any torsional stress on the connected hoses or tubes. This is especially advantageous when connecting two fixed male ORFS components. Manufactured from high-quality carbon steel and zinc-plated for enhanced corrosion resistance, the FS7504 adapter is built to SAE J1453 / ISO 8434-3 standards, ensuring robust and leak-free performance 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) |
| Body Style | Straight Union/Adapter, typically with a central hexagonal (hex) section or flats for secure wrench engagement. |
| Sealing Mechanism | Both ends achieve a metal-to-metal seal via an O-ring (supplied by the mating male ORFS fittings) 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 SAE ORFS fittings or prepared tube ends of the same size, with the convenience of swivel nuts on both ends for simplified installation and optimal alignment. |
| Working Pressure | Suitable for high-pressure hydraulic applications, often rated up to 6000 PSI or higher depending on size. |
Commonly Available Sizes (Part #FS7504 Series)
Delphi Fittings offers the FS7504 SAE ORFS Swivel Nut Straight Adapter in a range of common ORFS sizes. Both female ORFS swivel ends are typically of the same size to connect corresponding male ORFS fittings.
Examples include (Female ORFS Swivel x Female ORFS Swivel):
- FS7504-04: For connecting two 1/4" (-04) Male ORFS (9/16-18 UNF Thread)
- FS7504-06: For connecting two 3/8" (-06) Male ORFS (11/16-16 UNF Thread)
- FS7504-08: For connecting two 1/2" (-08) Male ORFS (13/16-16 UNF Thread)
- FS7504-10: For connecting two 5/8" (-10) Male ORFS (1-14 UNS Thread)
- FS7504-12: For connecting two 3/4" (-12) Male ORFS (1-3/16-12 UN Thread)
- FS7504-16: For connecting two 1" (-16) Male ORFS (1-7/16-12 UN Thread)
Note: This adapter connects to male ORFS fittings, which provide their own O-rings. For unlisted sizes, specific material requirements (e.g., stainless steel options), or other custom needs, please contact our sales team.
Applications
The Part FS7504 SAE ORFS Swivel Nut Straight Adapter is frequently utilized for:
- Joining two male ORFS ended hydraulic hoses, rigid tubes, or fixed components in a straight, in-line configuration.
- Applications where both connecting components are fixed or have limited maneuverability, and the dual swivel nuts provide the essential freedom for easy alignment and stress-free tightening.
- Ideal for repairing or extending existing hydraulic lines where male ORFS connections are present on both sides of the union point.
- Use in demanding hydraulic systems across various industries, including mobile equipment, industrial machinery, and manufacturing, where the superior sealing of ORFS and ease of assembly are valued.
- Situations requiring "zero clearance" for installation or removal of adjacent components.
Installation & Usage Guidelines
- Thoroughly inspect the flat sealing faces inside both female ORFS swivel nuts of the FS7504 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 or debris.
- 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 FS7504 adapter body stationary with a backup wrench (if design allows and it's practical), 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. Proper torque is critical for correct O-ring compression.
- 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 FS7504?
- Superior Leak Prevention: Both ends utilize the O-Ring Face Seal design, providing exceptionally reliable, virtually leak-free connections ideal for high-pressure and high-vibration hydraulic systems.
- Maximum Installation Flexibility: Dual female ORFS swivel nuts allow for easy, independent alignment and stress-free tightening of both connections, perfect for complex or fixed-point installations.
- Zero Clearance Assembly: The ORFS design permits components to be installed or removed without needing significant displacement of adjacent lines.
- High-Pressure Capability: Engineered to withstand the demanding pressures common in modern hydraulic systems.
- Excellent Reusability: The ORFS connection relies on a replaceable O-ring on the male fitting, allowing for multiple disconnections and reconnections with high reliability.
- Durable Carbon Steel Construction: Manufactured from high-grade carbon steel for excellent strength and longevity.
- Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and environmental 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 FS7504 - SAE ORFS Swivel Nut Straight Adapter
For versatile, easy-to-install, and highly reliable straight connections between two male ORFS fittings, the Part FS7504 Swivel Nut Straight Adapter offers maximum alignment flexibility and superior sealing. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.
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