DELPHI FITTINGS
Product Overview
The Delphi Fittings Part 2503 is a 45° adapter elbow engineered to create a secure, angular connection between a JIC (Joint Industry Council) 37° flare system and an NPTF (National Pipe Taper Fuel / Dryseal) threaded port. This fitting features a male JIC 37° flare on one end and a male NPTF pipe thread on the other, forming a 45-degree angle. It is commonly used to connect a hydraulic hose with a female JIC swivel nut or a flared tube to a component with a female NPTF port, where a gradual 45-degree change in direction is required for optimal routing. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the Part 2503 elbow provides a reliable, leak-resistant transition between these two prevalent hydraulic connection types.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| End 1 Configuration | Male 37° JIC Flare (per SAE J514 / ISO 8434-2) |
| End 2 Configuration | Male NPTF Pipe (Dryseal) (per ANSI B1.20.3 / SAE J476) |
| Angle | 45 Degrees |
| Body Style | Elbow Adapter with Hex or flats for wrench tightening. |
| Sealing Mechanism | JIC End: Metal-to-metal seal on the 37° flare cone. NPTF End: Metal-to-metal seal on the tapered Dryseal threads with a female NPTF port. |
| Primary Function | To connect a female JIC swivel fitting or flared tube to a female NPTF port at a 45° angle. |
| Plating & Finish | Cr3+ Trivalent Zinc Clear (ASTM B117 salt spray tested) |
| Applicable Standard | SAE J514 / ISO 8434-2 (ANSI B1.20.3 for NPTF threads) |
Commonly Available Sizes (Part #2503 Series)
Delphi Fittings manufactures precision standard and jump dash sizes for Part 2503. Engineering dimensions, thread specifications, and hex sizes for standard production series are detailed below:
| Delphi Part # | End 1 Specification | End 2 Specification | Hex Body Size |
|---|---|---|---|
| 2503-04-02 | 1/4" (7/16-20) JIC Male | 1/8" NPTF Male | 1/2" |
| 2503-04-04 | 1/4" (7/16-20) JIC Male | 1/4" NPTF Male | 1/2" |
| 2503-06-04 | 3/8" (9/16-18) JIC Male | 1/4" NPTF Male | 5/8" |
| 2503-06-06 | 3/8" (9/16-18) JIC Male | 3/8" NPTF Male | 5/8" |
| 2503-08-08 | 1/2" (3/4-16) JIC Male | 1/2" NPTF Male | 13/16" |
| 2503-12-12 | 3/4" (1-1/16-12) JIC Male | 3/4" NPTF Male | 1-1/8" |
Need custom jump sizes, extended neck lengths, special thread pitches, or alternative alloy grades (AISI 316 Stainless / Brass)? Delphi engineers and machines custom hydraulic fittings to client blueprints.
Specific Applications & Hydraulic Circuit Routing
Part 2503 fittings provide reliable, high-integrity connections across demanding mobile and stationary fluid power applications:
- Industrial Hydraulic Machinery: High-pressure hydraulic circuits, power packs, and hydraulic manifolds utilizing Part 2503 for reliable fluid conveyance.
- Mobile & Construction Equipment: Excavators, agricultural machinery, and heavy equipment subject to vibration, pressure pulsations, and harsh operating conditions.
- Fluid Routing & Manifold Transition: Facilitates smooth tube-to-hose or port-to-tube connections without imposing residual mechanical stress on hydraulic lines.
Installation & Assembly Guidance
- Surface & Thread Inspection: Ensure all male 37° flare surfaces, mating female cones, and thread flanks are clean, smooth, and free of burrs or contaminants.
- Finger-Tight Alignment: Align the mating connections coaxially and thread the connection by hand until fully seated finger-tight.
- Flats From Finger Tight (F.F.F.T.): Tighten the nut or hex body using the recommended SAE flats-from-finger-tight (FFFT) method or calibrated torque wrench to achieve proper metal-to-metal cone engagement.
- Dual-Wrench Backup Practice: Always support the fitting body hex with a backup wrench while tightening the mating nut or pipe connection to prevent inadvertent loosening.
Why Source Part 2503 from Delphi Fittings?
- SAE J514 & ISO 8434-2 Compliance: Precision CNC machined to exacting aerospace and industrial hydraulic tolerances for 100% interchangeability with North American and international systems.
- ASTM B117 Corrosion Protection: Heavy trivalent zinc clear plating provides exceptional resistance to red rust in harsh industrial and outdoor environments.
- Rigorous Thread Inspection: Every production batch undergoes 100% go/no-go optical and mechanical thread gauge verification to ensure leak-free field assembly.
- Factory-Direct OEM & Distributor Supply: Manufactured directly at our ISO 9001:2015 certified facility in Yuhuan, China, offering comprehensive MTR traceability and volume pricing.
Get a Quote for Part 2503 - 37° JIC Male to NPTF Male Pipe 45° Elbow
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 2503 in hydraulic valve manifolds, power units, and industrial fluid power circuits:
