DELPHI FITTINGS
Product Overview
The Delphi Fittings Part FS2404 is a straight adapter designed to provide a reliable 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 adapter features a male ORFS end with its distinctive flat face and O-ring groove on one side, and a male NPTF pipe thread on the other. The ORFS connection offers superior leak protection due to its O-ring seal, while the NPTF end provides a robust tapered thread seal. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the FS2404 adapter is ideal for high-pressure hydraulic applications requiring a transition between these two common 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) |
| Body Style | Straight Adapter with hexagonal (hex) features for secure wrench engagement. |
| 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. |
| Primary Function | To provide a straight, leak-proof connection from a female ORFS swivel fitting or prepared tube end to a female NPTF port. |
| 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. |
| Plating & Finish | Cr3+ Trivalent Zinc Clear (ASTM B117 salt spray tested) |
| Reference Standard | SAE J1453 / ISO 8434-3 (O-Ring Face Seal Standard) |
Commonly Available Sizes (Part #FS2404 Series)
Delphi Fittings manufactures standard and custom dash sizes for Part FS2404. Engineering specifications, dimensions, and thread/flange sizes are detailed below:
| Delphi Part # | End 1 Specification | End 2 Specification | Hex / Flange Size |
|---|---|---|---|
| FS2404-04-02 | 1/4" (-04) ORFS Male | 1/8" NPTF Male | Standard |
| FS2404-04-04 | 1/4" (-04) ORFS Male | 1/4" NPTF Male | Standard |
| FS2404-06-04 | 3/8" (-06) ORFS Male | 1/4" NPTF Male | Standard |
| FS2404-06-06 | 3/8" (-06) ORFS Male | 3/8" NPTF Male | Standard |
| FS2404-08-08 | 1/2" (-08) ORFS Male | 1/2" NPTF Male | Standard |
| FS2404-10-08 | 5/8" (-10) ORFS Male | 1/2" NPTF Male | Standard |
| FS2404-12-12 | 3/4" (-12) ORFS Male | 3/4" NPTF Male | Standard |
| FS2404-16-16 | 1" (-16) ORFS Male | 1" NPTF Male | Standard |
Need non-standard dash sizes, custom flange drops, special port configurations, or alternative material grades (AISI 316 Stainless / Brass)? Delphi manufactures custom components to client blueprints.
Specific Applications & Hydraulic Circuit Routing
Part FS2404 fittings provide reliable fluid power conveyance in demanding mobile and stationary equipment circuits:
- High-Vibration Mobile Equipment: Excavator booms, mining equipment, and hydrostatic drives where Part FS2404 prevents hydraulic weeping under intense shock loads.
- Zero-Clearance Manifold Assembly: Flat face design allows slip-in component replacement without springing or spreading rigid hydraulic tubes.
- Extreme Pressure Impulse Circuits: Elastomeric face seal remains 100% leak-free throughout repetitive thermal cycles and impulse spikes.
Installation & Assembly Guidance
- O-Ring Retention Inspection: Inspect the machined face groove to ensure the O-ring is properly seated and retained prior to mating.
- Face-to-Face Alignment: Bring the flat faces into parallel contact before hand-threading the swivel nut to avoid pinching the O-ring.
- Calibrated Torque Tightening: Tighten the nut to the specified SAE J1453 torque value using a calibrated torque wrench.
- Dual-Wrench Counter-Torque: Always hold the fitting body hex with a backup wrench while torquing the connection to prevent twisting.
Why Source Part FS2404 from Delphi Fittings?
- Strict Dimensional Precision: CNC machined to exacting tolerances for 100% interchangeability with North American and international systems.
- ASTM B117 Salt Spray Corrosion Protection: Electroplated with eco-friendly Cr3+ trivalent zinc clear for extended service life in harsh operating environments.
- 100% Thread & Seal Inspection: Every production batch undergoes strict optical and mechanical gauge inspection before packaging.
- Factory-Direct OEM Supply: Direct manufacturer pricing, full mill test reports (MTR), and ISO 9001:2015 quality assurance from Yuhuan, China.
Get a Quote for Part FS2404 - SAE ORFS Male x NPTF Pipe Male Adapter
Direct OEM container-load and distributor replenishment pricing, complete material test reports (MTR), and inspection samples available upon inquiry. Connect with our engineering sales team for rapid quotations and delivery schedules.
Complementary & Mating Hydraulic Fittings
Commonly paired with Part FS2404 in hydraulic valve manifolds, power units, and industrial fluid power circuits:
