Part Number: 6901

SAE ORB Male x NPSM Pipe Female Swivel 90° Elbow

Product Overview

The Delphi Fittings Part 6901 is a 90° adapter elbow designed for connecting a female SAE O-Ring Boss (ORB) port to a male NPSM (National Pipe Straight Mechanical) threaded fitting, providing a right-angle turn. This versatile fitting features a male SAE ORB end for a high-pressure O-ring seal and a female NPSM pipe thread with an integrated swivel nut on the other end. The swivel nut on the NPSM end allows for easy installation and alignment without twisting the mating component or hose, which is particularly beneficial in tight spaces. NPSM threads are straight and require a mechanical seal, often achieved with a gasket or by seating against a chamfer. This adapter is manufactured from durable carbon steel and is zinc-plated for corrosion resistance, ensuring reliable performance in hydraulic and pneumatic systems.

Key Features & Specifications

Material	High-Grade Carbon Steel
End 1 Configuration	Male SAE O-Ring Boss (ORB) (per SAE J1926-1 / ISO 11926-1)
End 2 Configuration	Female NPSM Pipe Swivel Nut (National Pipe Straight Mechanical - ANSI/ASME B1.20.1)
Angle	90 Degrees
Swivel Feature	NPSM female end features a swivel nut for ease of installation and alignment.
Sealing Mechanism	ORB End: O-ring (supplied with male ORB) seals against the boss in the female ORB port. NPSM End: Mechanical seal (e.g., gasket, O-ring on male fitting, or metal-to-metal face seal), as NPSM threads are non-sealing. The swivel nut facilitates this.
Corrosion Protection	Standard Zinc Plating for enhanced durability.
Primary Function	To adapt an SAE ORB port to a male NPSM fitting at a 90° angle, with swivel capability on the NPSM end.
Working Pressure	Suitable for hydraulic applications. Specific ratings depend on size and the NPSM seal integrity.
O-Ring Material (for ORB end)	Typically Buna-N (Nitrile) 90 Durometer. Other materials available upon request.

Commonly Available Sizes (Part #6901 Series)

Delphi Fittings offers the SAE ORB Male x NPSM Pipe Female Swivel 90° Elbow in various common ORB and NPSM size combinations.

Examples include (Male ORB x Female NPSM Swivel):

6901-04-04: -04 (7/16-20) ORB Male x 1/4"-18 NPSM Female Swivel
6901-06-06: -06 (9/16-18) ORB Male x 3/8"-18 NPSM Female Swivel
6901-08-08: -08 (3/4-16) ORB Male x 1/2"-14 NPSM Female Swivel
6901-10-10: -10 (7/8-14) ORB Male x 5/8" NPSM (thread typically same as 5/8" NPT) Female Swivel (check standard for exact NPSM thread)
6901-12-12: -12 (1-1/16-12) ORB Male x 3/4"-14 NPSM Female Swivel
6901-16-16: -16 (1-5/16-12) ORB Male x 1"-11-1/2 NPSM Female Swivel

Note: NPSM thread sizes are designated by nominal pipe size. Always verify the specific ORB and NPSM sizes required for your application. For unlisted size combinations, please contact our sales team.

Applications

The Part 6901 adapter elbow is valuable for connecting ORB ports to NPSM male-ended components at a 90-degree angle:

Connecting components with ORB ports to hoses or pipes terminating in male NPSM fittings, especially where a swivel connection is beneficial for alignment or to prevent hose twist.
Use in hydraulic systems on industrial machinery, mobile equipment, and other applications requiring adaptation between these thread types with a directional change.
Ideal for installations in confined spaces where the swivel feature simplifies tightening.

Installation & Usage Guidelines

Ensure all threads and sealing surfaces (ORB O-ring groove and port boss, NPSM threads, and mating male NPSM sealing face/gasket area) are clean, undamaged, and free of contaminants.
For the ORB end, ensure its O-ring is correctly sized, lubricated, and seated. Thread the male ORB end into the female ORB port and tighten to the recommended torque.
Align the female NPSM swivel nut with the male NPSM fitting. The swivel nut should turn freely. Ensure any required gasket or mechanical seal for the NPSM connection is in place. Tighten the swivel nut to achieve a secure, leak-proof mechanical seal. The swivel action prevents twisting of the elbow body or the mating component.
Use appropriate wrenches on the elbow body (if flats are provided), the ORB end, and the NPSM swivel nut.

Why Choose Delphi Fittings Part 6901?

Versatile Adaptation: Allows connection between SAE ORB ports and male NPSM fittings with a 90° turn.
Simplified Installation: The NPSM female swivel nut makes alignment and tightening easier, especially in tight or pre-plumbed situations.
Reliable ORB Seal: The male ORB end provides a high-integrity O-ring seal.
Secure NPSM Connection: Facilitates a proper mechanical seal for NPSM threads.
Durable Construction: Made from high-grade carbon steel for longevity in demanding hydraulic and pneumatic applications.
Standard Compliance: Adheres to relevant SAE and ANSI/ASME standards.
Quality Manufacturing: Produced under Delphi Fittings' ISO 9001:2015 certified quality management system.

Get a Quote for Part 6901 - SAE ORB Male x NPSM Female Swivel 90° Elbow

For reliable 90-degree adapter connections between SAE O-Ring Boss ports and male NPSM fittings, featuring the convenience of a swivel nut, the Part 6901 elbow is an excellent choice. Contact Delphi Fittings for wholesale pricing, bulk order information, and expert assistance.

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