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Swagelok to Male NPT Adapters

Swagelok to Male NPT Adapters: Secure, Torque-Free Tube-to-Thread Connections

Swagelok to Male NPT Adapters by TFM are precision-machined fittings designed to connect Swagelok compression tube ends directly to male NPT-threaded ports. Ideal for gas or fluid handling systems, these adapters ensure leak-proof, torque-free seals that maintain the integrity and performance of your tubing network.

Each adapter features a Swagelok dual-ferrule connection on one end and a tapered male NPT thread on the other—making them a versatile solution for integrating tubing into threaded manifolds, valves, or enclosures.

Key Features of Swagelok to Male NPT Adapters:

  • Leak-Proof, Torque-Free Sealing
    Swagelok fittings create a reliable seal at the tube interface without requiring over-tightening, ensuring repeatable and consistent performance across all assemblies.

  • Elimination of Costly and Hazardous Leaks
    These adapters are engineered to prevent leakage in critical process and instrumentation systems, supporting safe and uninterrupted operation in high-value environments.

  • Material-Specific Applications

    • Stainless Steel Adapters: Used in gas systems, including vacuum lines, chemical delivery, and process instrumentation.

    • Brass Adapters: Preferred for water systems or general low-pressure applications where cost-efficiency and corrosion resistance are priorities.

  • Standard NPT Threading
    The male NPT end conforms to ANSI/ASME B1.20.1 standards, providing a secure, tapered-thread seal compatible with a wide range of industrial components.

  • Compact and Versatile
    The straight in-line configuration makes these adapters ideal for use in confined installations, such as instrumentation panels, skids, and valve blocks.

Applications:

  • Connecting Swagelok tubing to threaded valves, manifolds, or chamber ports

  • Gas or fluid distribution systems in labs, factories, and cleanrooms

  • Retrofitting older NPT-threaded equipment with modern Swagelok tube assemblies

  • Supporting HVAC, hydraulic, and water control lines in industrial systems

  • Enabling quick integration of tubing into custom assemblies or OEM builds

TFM provides a full portfolio of Swagelok-compatible fittings, including female NPT adapters, elbows, tees, and bulkhead unions, allowing for complete fluid or gas routing solutions across your system.

Ordering Table

Reference Material Tube OD 1 Pipe Size Part Number
Swagelok to Male NPT Adapter Stainless Steel 1/8" 1/8" SS-200-1-2
Swagelok to Male NPT Adapter Stainless Steel 1/8" 1/4" SS-200-1-4
Swagelok to Male NPT Adapter Stainless Steel 1/4" 1/8" SS-400-1-2
Swagelok to Male NPT Adapter Stainless Steel 1/4" 1/4" SS-400-1-4
Swagelok to Male NPT Adapter Stainless Steel 3/8" 1/8" SS-600-1-2
Swagelok to Male NPT Adapter Stainless Steel 3/8" 1/4" SS-600-1-4
Swagelok to Male NPT Adapter Brass 1/4" 1/8" B-400-1-2
Swagelok to Male NPT Adapter Brass 1/4" 1/4" B-400-1-4
Swagelok to Male NPT Adapter Brass 3/8" 1/8" B-600-1-2
Swagelok to Male NPT Adapter Brass 3/8" 1/4" B-600-1-4

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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