Part Number: FS2503-SS

SAE ORFS Male x NPTF Pipe Male 45° Elbow (Stainless Steel)

Product Overview

The Delphi Fittings Part FS2503-SS is a 45° adapter elbow designed to provide a gradual directional change while connecting a female O-Ring Face Seal (ORFS) swivel to a female NPTF port. This fitting is forged from 316-grade stainless steel for maximum strength and corrosion resistance, making it an essential component for routing hydraulic lines in harsh environments. It combines the leak-proof reliability of an ORFS connection with the utility of the common NPTF thread standard in a single, space-saving component.

Key Features & Specifications

Material	High-Grade Stainless Steel (Typically 316 SS)
End 1 Configuration	Male O-Ring Face Seal (ORFS) (per SAE J1453)
End 2 Configuration	Male National Pipe Tapered Fuel (NPTF) (per ANSI B1.20.3)
Body Style	45° Adapter Elbow.
Sealing Mechanism	ORFS End: O-ring on a flat face. NPTF End: Tapered thread interference (sealant is recommended).
Corrosion Protection	Superior inherent corrosion resistance from stainless steel.
Primary Function	To connect a female ORFS swivel fitting to a female NPTF port at a 45-degree angle.
Working Pressure	Designed for high-pressure hydraulic systems. The overall pressure rating is typically limited by the NPTF connection.

Commonly Available Sizes (Part #FS2503-SS Series)

This adapter elbow is available in a range of common size combinations.

Examples include (Male ORFS x Male NPTF):

FS2503-04-04-SS: 1/4" ORFS x 1/4" NPTF
FS2503-06-06-SS: 3/8" ORFS x 3/8" NPTF
FS2503-08-08-SS: 1/2" ORFS x 1/2" NPTF
FS2503-12-12-SS: 3/4" ORFS x 3/4" NPTF
FS2503-16-16-SS: 1" ORFS x 1" NPTF

Note: For unlisted size combinations, please contact our sales team.

Applications

The FS2503-SS 45° elbow is ideal for creating clean, efficient hydraulic line routings:

Providing a gradual, 45-degree turn when connecting an ORFS hose to equipment with NPTF ports, which can improve flow characteristics compared to a 90° elbow.
Navigating complex plumbing paths in corrosive environments like marine, chemical, or food processing systems.
Reducing stress on hose assemblies by allowing for a more natural bend radius.
Eliminating the need for multiple fittings to achieve a gradual turn and thread adaptation, thereby reducing potential leak points.

Installation & Usage Guidelines

ORFS End: Inspect the O-ring and flat face for defects. Apply a compatible lubricant to the O-ring. Align the fittings and tighten the female swivel nut to the specified torque.
NPTF End: Apply a suitable thread sealant to the male NPTF threads, avoiding the first one or two threads. Screw into the female port and tighten to achieve a secure seal and the correct orientation. Be careful not to over-tighten.
Use a wrench on the elbow's body to prevent it from turning while tightening the connections on either end.

Why Choose Delphi Fittings Part FS2503-SS?

Optimal Flow Characteristics: The 45° bend provides a smoother flow path with less restriction compared to a standard 90° elbow.
Reliable, Hybrid Connection: Securely combines the leak-proof ORFS seal with the common NPTF thread standard in a useful angle configuration.
Forged for Strength: The forged body ensures robustness and reliability in high-pressure and high-vibration applications.
Maximum Corrosion Resistance: Made from 316 stainless steel to withstand the most challenging operational environments.
Simplified Plumbing: Replaces multiple components with a single, high-quality fitting, saving space and enhancing system integrity.

Get a Quote for Part FS2503-SS - Stainless ORFS to NPTF 45° Elbow

For efficient routing and a reliable, corrosion-resistant connection between ORFS and NPTF systems, the FS2503-SS is the ideal choice. Contact Delphi Fittings today for wholesale pricing and availability.

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