Part Number: 1501LL

NPTF Male Pipe x Female NPSM 90° Elbow Long

Product Overview

The Delphi Fittings Part 1501LL is an extended length 90° elbow adapter designed to provide a secure, right-angle connection with increased reach between a male NPTF (National Pipe Taper Fuel / Dryseal) threaded pipe or fitting and a component or hose assembly featuring a female NPSM (National Pipe Straight Mechanical) swivel end. This adapter features a male NPTF pipe thread on one end and a female NPSM pipe swivel on the other, with an extended dimension on one or both legs of the elbow to facilitate connections in applications with restricted access or requiring additional clearance. The NPSM swivel nut allows for easy alignment and tightening without imparting torsional stress onto the mating hose or component. Manufactured from high-quality carbon steel and typically zinc-plated for corrosion resistance, the Part 1501LL adapter offers a durable and reliable solution for transitioning between NPTF and NPSM connections with a directional change and extended reach.

Key Features & Specifications

Material	High-Grade Carbon Steel
End 1 Configuration	Male NPTF Pipe (Dryseal) (threads conforming to ANSI B1.20.3 / SAE J476) - Extended length
End 2 Configuration	Female NPSM Pipe Swivel (National Pipe Straight Mechanical) (threads conforming to ANSI/ASME B1.20.1) - Potentially extended
Angle	90 Degrees
Design Feature	Long pattern design providing extended reach or clearance compared to standard elbows.
Body Style	Long Elbow Adapter with hexagonal (hex) features for secure wrench engagement.
Sealing Mechanism	NPTF Male End: Forms a Dryseal (metal-to-metal) 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. NPSM Female Swivel End: NPSM threads are straight and do not provide a seal on the threads. Sealing is typically achieved when this female swivel connects to a male fitting with a tapered seat (e.g., a male NPT or NPTF fitting) or a specific male NPSM fitting designed with a sealing face. The swivel nut facilitates tightening without rotating the elbow body.
Corrosion Protection	Standard Zinc Plating for enhanced durability and resistance to environmental corrosion.
Primary Function	To provide a 90-degree, leak-proof connection with extended reach from a male NPTF fitting or pipe to a female NPSM swivel end, allowing for easy installation and correct orientation.
Working Pressure	Suitable for a range of hydraulic and pneumatic systems. Specific pressure ratings depend on the size, application, and seal integrity.

Commonly Available Sizes (Part #1501LL Series)

Delphi Fittings offers the Part 1501LL NPTF Male x NPSM Female Pipe Swivel 90° Long Elbow in various common nominal pipe sizes. The NPTF male and NPSM female ends typically share the same nominal pipe size designation.

Examples include (Male NPTF x Female NPSM Swivel Long):

1501LL-04-04: 1/4" NPTF Male x 1/4" NPSM Female Swivel Long
1501LL-06-06: 3/8" NPTF Male x 3/8" NPSM Female Swivel Long
1501LL-08-08: 1/2" NPTF Male x 1/2" NPSM Female Swivel Long
1501LL-12-12: 3/4" NPTF Male x 3/4" NPSM Female Swivel Long

Note: The 'LL' suffix denotes an extended length compared to the standard 1501 elbow; specific extended dimensions should be confirmed for your application. For unlisted size combinations, specific material requirements (e.g., stainless steel options), or other custom needs, please contact our sales team.

Applications

The Part 1501LL NPTF Male x NPSM Female Pipe Swivel 90° Long Elbow is particularly useful for:

Connecting components with male NPTF threads to female NPSM swivel ends at a 90-degree angle where additional reach is needed to clear obstructions, access recessed ports, or achieve better line routing.
Installations in confined spaces where the swivel feature combined with the extended length simplifies alignment and tightening, preventing stress on connected hoses or pipes.
Various hydraulic, pneumatic, and general industrial piping applications requiring a reliable angled transition between NPTF and NPSM connections.
Retrofitting or modifying systems where existing pipework or component placement necessitates an extended-reach elbow.

Installation & Usage Guidelines

Ensure all NPTF male threads, NPSM female swivel threads, and any mating sealing surfaces are meticulously clean, undamaged, and free from any contaminants.
Apply a suitable thread sealant (such as PTFE tape or a compatible pipe dope) to the male NPTF threads of the Part 1501LL adapter, especially if mating with a standard NPT female port.
Thread the male NPTF end of the adapter into the mating female NPTF or NPT port. Before final tightening, orient the long elbow to the desired 90-degree angle. Then, tighten with a wrench to the appropriate specification.
Connect the female NPSM swivel end of the adapter to a mating male NPT or specific NPSM fitting. The swivel nut allows the elbow body to be held stationary while the nut is tightened independently. Ensure proper engagement of the sealing surfaces (e.g., male NPT threads or NPSM seat).
Always use appropriate backup wrenches on the adapter's hex body and the mating components during tightening to prevent over-torquing or damage.

Why Choose Delphi Fittings Part 1501LL?

Extended Reach Capability: The long pattern design provides additional length to access recessed or obstructed ports, facilitating easier and more flexible installations.
Versatile Angled Connection: Effectively adapts male NPTF connections to female NPSM swivel connections at a 90-degree angle.
Simplified and Stress-Free Installation: The NPSM female swivel end allows for easy alignment and tightening without imparting torsional stress on the connected hose or component.
Reliable NPTF Sealing: The NPTF male end provides a proven Dryseal connection when mated with a female NPTF port, or a reliable seal with sealant when used with standard NPT ports.
Durable Carbon Steel Construction: Manufactured from high-grade carbon steel for excellent strength and longevity.
Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and environmental factors.
Adherence to Industry Standards: Conforms to relevant ANSI/ASME and SAE standards for NPTF and NPSM threads.
Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.

Get a Quote for Part 1501LL - NPTF Male x NPSM Female 90° Elbow Long

For reliable 90-degree connections with extended reach between male NPTF fittings/pipes and female NPSM swivel ends, the Part 1501LL adapter elbow offers robust performance and enhanced installation flexibility. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.

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