DELPHI FITTINGS
Part Number: 1503
NPTF Pipe Male x NPSM Pipe Swivel Female 45° Elbow
Product Overview
The Delphi Fittings Part 1503 is a 45° elbow adapter, engineered to facilitate a secure, angled connection 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 has a male NPTF pipe thread on one end, designed for a Dryseal metal-to-metal connection (or with sealant if mating to standard NPT), and a female NPSM pipe swivel on the other, oriented at a 45-degree angle. The NPSM swivel nut is a key feature, allowing for easy installation and precise orientation of the connected line without inducing torsional stress, which is particularly advantageous in constrained spaces or complex hydraulic routings. Manufactured from high-quality carbon steel and typically zinc-plated for corrosion resistance, the Part 1503 adapter offers a durable and reliable solution for creating 45-degree transitions between NPTF and NPSM connections.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| End 1 Configuration | Male NPTF Pipe (Dryseal) (threads conforming to ANSI B1.20.3 / SAE J476) |
| End 2 Configuration | Female NPSM Pipe Swivel (National Pipe Straight Mechanical) (threads conforming to ANSI/ASME B1.20.1) |
| Angle | 45 Degrees |
| Body Style | Elbow Adapter with hexagonal (hex) features or flats 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 seal on the threads themselves. 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, where the seal forms on the male tapered threads) or, in some instances, a specific male NPSM fitting designed with a compatible sealing face. The swivel nut allows tightening without rotating the elbow body. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability and resistance to environmental corrosion. |
| Primary Function | To provide a 45-degree, leak-proof connection from a male NPTF fitting or pipe to a female NPSM swivel end, allowing for optimal orientation and ease of installation while adapting between these common thread types. |
| Working Pressure | Suitable for a range of hydraulic and pneumatic systems. Specific pressure ratings are dependent on the size of the adapter, the application, and the integrity of the NPTF seal. |
Commonly Available Sizes (Part #1503 Series)
Delphi Fittings offers the Part 1503 NPTF Male x NPSM Female Pipe Swivel 45° 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):
- 1503-02-02: 1/8" NPTF Male x 1/8" NPSM Female Swivel
- 1503-04-04: 1/4" NPTF Male x 1/4" NPSM Female Swivel
- 1503-06-06: 3/8" NPTF Male x 3/8" NPSM Female Swivel
- 1503-08-08: 1/2" NPTF Male x 1/2" NPSM Female Swivel
- 1503-12-12: 3/4" NPTF Male x 3/4" NPSM Female Swivel
- 1503-16-16: 1" NPTF Male x 1" NPSM Female Swivel
Note: For unlisted size combinations, specific material requirements (e.g., stainless steel options), or other custom needs, please contact our sales team.
Applications
The Part 1503 NPTF Male x NPSM Female Pipe Swivel 45° Elbow is widely used in:
- Connecting components with male NPTF threads (such as outlets on pumps, valves, or manifolds) to hydraulic hoses or assemblies terminated with female NPSM swivel ends, where a 45-degree change in line direction is required for optimal routing.
- Installations where the swivel feature is crucial for simplifying alignment and preventing kinking or torsional stress on the connected hose or component, especially when connecting to fixed NPTF ports at an angle.
- Various hydraulic, pneumatic, and general industrial piping applications requiring a reliable angled transition between NPTF and NPSM connections, with the benefit of easy orientation.
- Providing a smoother bend radius compared to a 90-degree elbow, which can be beneficial in certain flow-sensitive applications or where space is limited.
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 or debris.
- Apply a suitable thread sealant (such as PTFE tape or a compatible pipe dope) to the male NPTF threads of the Part 1503 adapter, especially if mating with a standard NPT female port. Ensure sealant is applied correctly, avoiding the first one or two threads.
- Thread the male NPTF end of the adapter into the mating female NPTF or NPT port. Before final tightening, orient the elbow to the desired 45-degree angle. Then, tighten with a wrench to the appropriate specification to achieve a secure seal on the tapered threads.
- 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 in its oriented position while the nut is tightened. Ensure that the mating male fitting's sealing mechanism (e.g., its own tapered threads for NPT, or a specific seat for certain NPSM males) is correctly engaged.
- Always use appropriate backup wrenches on the adapter's hex body and the mating components during tightening to prevent over-torquing or damage to the fittings or connected lines.
Why Choose Delphi Fittings Part 1503?
- Versatile 45° Angled Connection: Effectively adapts male NPTF connections to female NPSM swivel connections at a 45-degree angle, providing flexibility in system design and routing.
- 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 in typical hydraulic and pneumatic system environments.
- Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and other environmental corrosive factors.
- Adherence to Industry Standards: Both NPTF and NPSM threads conform to relevant ANSI/ASME and SAE specifications, ensuring compatibility.
- Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.
Get a Quote for Part 1503 - NPTF Male x NPSM Female Pipe Swivel 45° Elbow
For reliable 45-degree connections between male NPTF fittings/pipes and female NPSM swivel ends, the Part 1503 adapter elbow offers exceptional ease of installation and robust performance for your fluid power systems. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.
Request a Quote Back to NPSM Swivel Fittings