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Swagelok VCR Male Elbow Unions

Swagelok VCR Male Elbow Unions: 90-Degree Face-Seal Solutions for Precision Gas Routing

Swagelok VCR Male Elbow Unions from TFM offer a compact, 90-degree transition between two gas lines, making them ideal for use in tight layouts within UHV systems, instrumentation panels, and process gas lines. Featuring male VCR face-seal connections on both ends, these elbow unions utilize metal gaskets (stainless steel or copper) to achieve leak-free, torque-independent sealing in low-pressure gas and ultra-high vacuum (UHV) environments.

Constructed from corrosion-resistant 316L stainless steel, these fittings deliver exceptional performance where purity, thermal stability, and vacuum integrity are essential.

Key Features of Swagelok VCR Male Elbow Unions:

  • Leak-Tight Metal Gasket Sealing
    The VCR face-seal design ensures clean, repeatable connections with zero elastomer degradation, suitable for high-purity and oxygen-sensitive applications.

  • Compact 90° Elbow Geometry
    Ideal for installations where space is limited, the elbow design enables directional changes in flow without the need for multiple fittings.

  • High-Temperature Resilience

    • With stainless steel gaskets, these elbow unions withstand bakeout temperatures up to 538°C.

    • With copper gaskets, they operate reliably at up to 204°C, making them versatile for most industrial gas plumbing systems.

  • Ultra-High Vacuum (UHV) Ready
    Engineered for pressures down to 10⁻⁹ Torr, making them suitable for leak-checking systems, mass spectrometry, and vacuum chambers.

  • All-Metal Construction
    Manufactured from 316L stainless steel, these fittings resist corrosion and contamination, preserving gas purity throughout system operation.

Applications:

  • Gas delivery bends in lecture bottle or regulator assemblies

  • Elbow connections in helium leak test lines

  • Right-angle transitions in UHV manifolds

  • Compact gas routing in semiconductor process tools

  • Cleanroom-compatible vacuum or gas plumbing setups

TFM also supplies the full line of Swagelok VCR components, including caps, crosses, straight unions, nuts, and gaskets, allowing complete customization of your gas handling or UHV system.

Ordering Table

Reference Material Tube OD 1 Part Number
VCR Male Elbow Union Stainless Steel 1/8" 2MVCR-E
VCR Male Elbow Union Stainless Steel 1/4" 4MVCR-E
VCR Male Elbow Union Stainless Steel 1/2" 8MVCR-E

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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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