DELPHI FITTINGS
Part Number: FS2503
SAE ORFS Male x NPTF Pipe Male 45° Elbow
Product Overview
The Delphi Fittings Part FS2503 is a 45° adapter elbow meticulously designed to create a secure, angled connection between a female SAE O-Ring Face Seal (ORFS) swivel fitting or prepared tube end and a female NPTF (National Pipe Taper Fuel / Dryseal) port. This robust fitting features a male ORFS end with its characteristic flat face and O-ring groove on one side, and a male NPTF pipe thread on the other, oriented at a 45-degree angle to each other. The ORFS connection is renowned for its superior leak prevention, particularly in high-pressure and high-vibration environments, while the NPTF end offers a reliable tapered thread seal. Manufactured from high-quality carbon steel and zinc-plated for enhanced corrosion resistance, the FS2503 elbow is ideal for hydraulic applications requiring a 45-degree directional change and adaptation between these two prevalent fitting standards.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| End 1 Configuration | Male SAE O-Ring Face Seal (ORFS) (conforming to SAE J1453 / ISO 8434-3) |
| End 2 Configuration | Male NPTF Pipe (Dryseal) (conforming to ANSI B1.20.3 / SAE J476) |
| Angle | 45 Degrees |
| Body Style | Elbow Adapter, typically forged for strength, with hexagonal (hex) features or flats for secure wrench engagement during installation. |
| Sealing Mechanism | ORFS End: Utilizes an elastomeric O-ring (seated in the groove on the male ORFS face) which compresses against the flat face of the mating female ORFS swivel fitting, creating a high-integrity static face seal. NPTF End: Achieves a metal-to-metal seal on the tapered Dryseal threads when mated with a female NPTF port. If connecting to a standard NPT female port, the use of a compatible thread sealant on the male NPTF threads is recommended for an optimal seal. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability and resistance to environmental corrosion. |
| Primary Function | To provide a 45-degree, leak-proof connection from a female ORFS swivel fitting or prepared tube end to a female NPTF port, allowing for optimized line routing. |
| Working Pressure | Suitable for high-pressure hydraulic systems. Specific pressure ratings are dependent on the size of the adapter and the application conditions. |
| O-Ring Material (for ORFS end) | Typically Buna-N (Nitrile) 90 Durometer as standard. Viton® (FKM) or other materials available upon request for specific fluid or temperature compatibility. O-ring is supplied with the fitting. |
Commonly Available Sizes (Part #FS2503 Series)
Delphi Fittings offers the FS2503 SAE ORFS Male x NPTF Pipe Male 45° Elbow in a variety of common ORFS and NPTF size combinations.
Examples include (Male ORFS x Male NPTF):
- FS2503-04-02: 1/4" (-04) ORFS Male x 1/8" NPTF Male
- FS2503-04-04: 1/4" (-04) ORFS Male x 1/4" NPTF Male
- FS2503-06-04: 3/8" (-06) ORFS Male x 1/4" NPTF Male
- FS2503-06-06: 3/8" (-06) ORFS Male x 3/8" NPTF Male
- FS2503-08-08: 1/2" (-08) ORFS Male x 1/2" NPTF Male
- FS2503-10-08: 5/8" (-10) ORFS Male x 1/2" NPTF Male
- FS2503-12-12: 3/4" (-12) ORFS Male x 3/4" NPTF Male
Note: Each ORFS male end includes an appropriate O-ring. For unlisted size combinations, specific material requirements (e.g., stainless steel options), or other custom needs, please contact our sales team.
Applications
The Part FS2503 SAE ORFS Male x NPTF Pipe Male 45° Elbow is ideal for:
- Connecting hydraulic lines or components with female ORFS swivel ends to equipment or manifolds that have female NPTF ports, where a 45-degree change in direction is necessary for optimal routing or to avoid obstructions.
- Integrating components utilizing ORFS technology (renowned for its excellent sealing capabilities) into systems that also incorporate traditional NPTF threaded connections, particularly where an angled connection is preferred over a straight or 90-degree adapter.
- Use in demanding hydraulic applications such as mobile equipment (construction, agriculture, forestry), industrial machinery, and manufacturing systems where a secure, high-pressure, angled connection is needed.
- Providing a smoother flow path and potentially reducing pressure drop compared to a 90-degree elbow in certain hydraulic circuit designs.
Installation & Usage Guidelines
- Thoroughly inspect the ORFS male flat face and O-ring groove, the NPTF male threads, and all mating surfaces (female ORFS flat face and female NPTF port) to ensure they are clean, undamaged, and free from any contaminants.
- Verify that the O-ring for the ORFS end is the correct size and material (e.g., Buna-N, Viton®) for the application's fluid, temperature, and pressure. Ensure the O-ring is correctly lubricated with a system-compatible fluid.
- Carefully install the lubricated O-ring into the groove on the ORFS male face of the adapter.
- For the NPTF male end, apply a suitable thread sealant (such as PTFE tape or a compatible pipe dope) to the threads. This is especially important if mating with a standard NPT female port.
- Thread the NPTF male end of the elbow into the mating female NPTF or NPT port. Before fully tightening, orient the elbow to the desired 45-degree angle to ensure correct alignment of the ORFS end for the connecting line. Once oriented, tighten with a wrench to the appropriate specification.
- Align the male ORFS end of the adapter with the mating female ORFS swivel fitting or prepared tube end. Hand-tighten the ORFS swivel nut until the flat faces make contact and the O-ring is engaged.
- Use appropriate wrenches to tighten the ORFS connection. While holding the elbow body stationary with a backup wrench, tighten the female ORFS swivel nut to the manufacturer's recommended torque value or by using the "Flats From Wrench Resistance" (FFWR) method if specified.
Why Choose Delphi Fittings Part FS2503?
- Superior ORFS Sealing: The O-Ring Face Seal connection provides an exceptionally reliable, leak-free performance, ideal for high-pressure and high-vibration hydraulic applications.
- Reliable NPTF Connection: The NPTF male end offers a robust tapered thread seal, especially effective when mated with NPTF female ports.
- Optimized 45° Angled Adaptation: Securely connects systems or components utilizing ORFS technology with those using NPTF threads at a 45-degree angle, allowing for smoother routing.
- High-Pressure Capability: Engineered to withstand the demanding pressures of modern hydraulic systems.
- Durable Carbon Steel Construction: Manufactured from high-grade carbon steel for excellent strength and longevity in industrial 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 (ORFS) and ANSI B1.20.3/SAE J476 (NPTF) specifications, ensuring compatibility.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part FS2503 - SAE ORFS Male x NPTF Pipe Male 45° Elbow
For dependable 45-degree connections adapting female ORFS swivel fittings to female NPTF ports, offering superior sealing and optimized routing, the Part FS2503 elbow is an excellent choice for your hydraulic systems. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.
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