Part Number: 1601

Steel Branch Tee NPTF Male x NPSM Female Swivels

Product Overview

The Delphi Fittings Part 1601 is a versatile steel branch tee adapter. This fitting is typically configured with male NPTF (National Pipe Taper Fuel / Dryseal) threads on both ends of the straight-through 'run' and a female NPSM (National Pipe Straight Mechanical) swivel nut on the 90-degree branch. This design allows for a secure, Dryseal connection to female NPTF ports on the main line, while the NPSM swivel branch provides an easy-to-align connection point for a male NPT/NPTF fitting or hose assembly, preventing torsional stress during installation. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the Part 1601 tee is ideal for creating branch lines for gauges, auxiliary circuits, or other components in hydraulic and pneumatic systems.

Key Features & Specifications

Material	High-Grade Carbon Steel
Run End 1 Configuration	Male NPTF Pipe (Dryseal) (threads conforming to ANSI B1.20.3 / SAE J476)
Run End 2 Configuration	Male NPTF Pipe (Dryseal) (threads conforming to ANSI B1.20.3 / SAE J476)
Branch End Configuration	Female NPSM Pipe Swivel (National Pipe Straight Mechanical) (threads conforming to ANSI/ASME B1.20.1)
Body Style	Tee Adapter with hexagonal (hex) features or flats for secure wrench engagement.
Sealing Mechanism	NPTF Male Ends (Run): Form a Dryseal (metal-to-metal) when mated with female NPTF ports. If connecting to standard NPT female ports, the use of a compatible thread sealant on the male NPTF threads is recommended. NPSM Female Swivel End (Branch): NPSM threads are straight and do not provide a seal on the threads. Sealing is 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 a specific male NPSM fitting designed with a sealing face. The swivel nut facilitates tightening without rotating the tee body.
Corrosion Protection	Standard Zinc Plating for enhanced durability and resistance to environmental corrosion.
Primary Function	To create a 90-degree branch with a female NPSM swivel connection from a main line that has female NPTF ports on both run ends, allowing for easy installation and orientation of the branch line.
Working Pressure	Suitable for a range of hydraulic and pneumatic systems. Specific pressure ratings depend on the size of the fitting, application conditions, and the integrity of the NPTF seals.

Commonly Available Sizes (Part #1601 Series)

Delphi Fittings offers the Part 1601 Steel Branch Tee in various common nominal pipe size combinations. The sizes are typically specified as Run x Run x Branch.

Examples include (Male NPTF Run x Male NPTF Run x Female NPSM Swivel Branch):

1601-02-02-02: 1/8" NPTF Male x 1/8" NPTF Male (Run) x 1/8" NPSM Female Swivel (Branch)
1601-04-04-04: 1/4" NPTF Male x 1/4" NPTF Male (Run) x 1/4" NPSM Female Swivel (Branch)
1601-06-06-06: 3/8" NPTF Male x 3/8" NPTF Male (Run) x 3/8" NPSM Female Swivel (Branch)
1601-08-08-08: 1/2" NPTF Male x 1/2" NPTF Male (Run) x 1/2" NPSM Female Swivel (Branch)
1601-08-08-04: 1/2" NPTF Male x 1/2" NPTF Male (Run) x 1/4" NPSM Female Swivel (Branch) (Reducing Branch)

Note: Other configurations of run ends (e.g., Female NPTF x Female NPTF) might also be available under similar part number series. Always confirm the exact configuration. For unlisted size combinations, specific material requirements, or other custom needs, please contact our sales team.

Applications

The Part 1601 Steel Branch Tee is widely used in:

Creating a branch line (often for instrumentation, gauges, or auxiliary circuits) from a main hydraulic or pneumatic line that connects to female NPTF ports.
Installations where the swivel feature on the branch is crucial for easy alignment and tightening of the connected hose or component without imparting stress.
Various industrial machinery, fluid power systems, and general piping setups where a reliable T-junction with mixed thread types and swivel functionality is required.
Systems where NPTF Dryseal connections are preferred for the main run to minimize the need for sealant, while the NPSM swivel offers installation convenience for the branch.

Installation & Usage Guidelines

Ensure all NPTF male threads, NPSM female swivel threads, and mating port/fitting threads are meticulously clean, undamaged, and free from any contaminants.
Apply a suitable thread sealant (such as PTFE tape or compatible pipe dope) to the male NPTF threads of the tee's run ends if mating with standard NPT female ports or for added sealing assurance in NPTF connections. Thread the run ends into the mating female NPTF (or NPT) ports.
Orient the tee so the branch faces the desired direction. Tighten the run end connections to the appropriate specification to achieve secure, leak-proof seals.
Connect the female NPSM swivel end of the branch to a mating male NPT or specific NPSM fitting. The swivel nut allows the tee body to be held stationary while the nut is tightened. Ensure that the sealing mechanism of the mating male fitting is correctly engaged. If connecting to a male NPT fitting, apply thread sealant to the male threads.
Always use appropriate backup wrenches on the tee's body and the mating components during tightening to prevent over-torquing or damage to the fittings.

Why Choose Delphi Fittings Part 1601?

Versatile Branching Solution: Allows for a convenient 90-degree branch with an easy-to-install NPSM swivel from a main line using robust NPTF connections.
Simplified Installation: The NPSM female swivel on the branch facilitates straightforward alignment and tightening, preventing torsional stress on connected hoses or components.
Reliable Sealing: NPTF male ends provide a proven Dryseal connection (or reliable seal with sealant for NPT), while the NPSM swivel allows for proper engagement of the mating male fitting's seal.
Durable Carbon Steel Construction: Manufactured from high-grade carbon steel for excellent strength and longevity in typical industrial, hydraulic, and pneumatic environments.
Enhanced Corrosion Resistance: Standard zinc plating provides robust protection against rust and other environmental corrosive factors, extending the fitting's service life.
Adherence to Industry Standards: 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 1601 - Steel Branch Tee NPTF Male x NPSM Female Swivels

For reliable T-junctions in your fluid power systems, featuring NPTF male run ends and an NPSM female swivel branch for easy installation, the Part 1601 tee offers an excellent solution. Contact Delphi Fittings today for competitive wholesale pricing, bulk order information, and expert technical support.

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