DELPHI FITTINGS
Product Overview
The Delphi Fittings Part 6425 is an SAE ORB Female x SAE ORB Female Coupler, designed as a straight fitting to connect two male SAE O-Ring Boss (ORB) fittings of the same size. This coupler features female SAE O-Ring Boss ports on both ends, each machined with the necessary internal boss to properly seat and seal the O-ring from the mating male ORB fittings. While it provides a direct ORB-to-ORB connection, its use can be specific as it extends a line composed of two male fittings. The sealing integrity relies entirely on the O-rings of the male fittings being connected. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the Part 6425 offers a solution for specific hydraulic plumbing scenarios.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| End 1 Configuration | Female SAE O-Ring Boss (ORB) (per SAE J1926-1 / ISO 11926-1) |
| End 2 Configuration | Female SAE O-Ring Boss (ORB) (per SAE J1926-1 / ISO 11926-1) |
| Body Style | Straight Coupler with Hex Body (or wrench flats) for tightening. |
| Sealing Mechanism | Each female ORB port is designed to seal with the O-ring supplied on the mating male ORB fitting, which compresses against the internal boss of this coupler. |
| Primary Function | To connect two male SAE O-Ring Boss fittings of the same size in a straight line. |
| Usage Note | Use may be limited compared to other adapters; sealing relies on the O-rings of the male fittings being connected. |
| Plating & Finish | Cr3+ Trivalent Zinc Clear (ASTM B117 salt spray tested) |
| Port Standard | SAE J1926-1 / ISO 11926-1 (SAE Straight Thread O-Ring Boss) |
Commonly Available Sizes (Part #6425 Series)
Delphi Fittings manufactures standard and jump port sizes for Part 6425. Thread dimensions, port specifications, and hex sizes for standard production series are detailed below:
| Delphi Part # | End 1 Specification | End 2 Specification | Hex Body Size |
|---|---|---|---|
| 6425-04 | -04 (7/16-20) Female ORB | -04 (7/16-20) Female ORB | 9/16" |
| 6425-06 | -06 (9/16-18) Female ORB | -06 (9/16-18) Female ORB | 11/16" |
| 6425-08 | -08 (3/4-16) Female ORB | -08 (3/4-16) Female ORB | 7/8" |
| 6425-10 | -10 (7/8-14) Female ORB | -10 (7/8-14) Female ORB | 1" |
| 6425-12 | -12 (1-1/16-12) Female ORB | -12 (1-1/16-12) Female ORB | 1-1/4" |
| 6425-16 | -16 (1-5/16-12) Female ORB | -16 (1-5/16-12) Female ORB | 1-1/2" |
Need non-standard dash combinations, jump port sizes, alternative elastomer seal compounds (EPDM / HNBR / Viton® FKM), or custom alloy runs? Delphi manufactures custom hydraulic adapters to customer blueprint.
Specific Applications & Hydraulic Circuit Routing
Part 6425 fittings provide leak-free fluid power conveyance in demanding mobile and stationary equipment circuits:
- Hydraulic Valve Manifolds & Blocks: Provides zero-clearance, leak-tight port connections on mobile and industrial hydraulic manifold blocks utilizing Part 6425.
- Pumps, Motors & Cylinders: Connects fluid power lines directly to SAE straight-thread ORB ports on gear pumps, piston motors, and hydraulic cylinders.
- Thermal Cycling & High Vibration Systems: Elastomeric O-ring maintains full seal integrity where tapered pipe threads might back off or weep under intense machine vibration.
Installation & Assembly Guidance
- O-Ring Lubrication: Always inspect and lightly lubricate the elastomeric O-ring with clean system hydraulic fluid prior to thread engagement to avoid pinching or tearing.
- Straight Fitting Engagement: For straight fittings, hand-thread into the port until the hex shoulder bottoms firmly against the spotface, then torque to SAE J1926 specifications.
- Adjustable Fitting Orientation: For elbows and tees, back off the locknut and washer completely. Thread fitting into port until washer contacts face, then back out counter-clockwise (max 360°) to align, and tighten locknut.
- Dual Wrench Security: Hold the adapter body firmly with a backup wrench while securing mating hose swivel nuts or tube connections.
Why Source Part 6425 from Delphi Fittings?
- SAE J1926 & ISO 11926 Compliance: Precision CNC machined with precise O-ring retaining undercuts to ensure complete interchangeability with North American and European hydraulic equipment.
- ASTM B117 Superior Corrosion Resistance: Heavy trivalent zinc clear finish delivers exceptional protection against white and red rust in demanding outdoor and mobile environments.
- 100% Optical Thread Verification: All male and female threads undergo strict go/no-go optical gauge inspection to guarantee flawless field threading without binding.
- Factory-Direct OEM & Distributor Programs: Manufactured directly at our ISO 9001:2015 certified facility in Yuhuan, China, backed by mill test reports (MTR) and volume distributor pricing.
Get a Quote for Part 6425 - SAE ORB Female x SAE ORB Female Coupler
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 6425 in hydraulic valve manifolds, power units, and industrial fluid power circuits:
