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Weldable Tube 90° Radius Elbows

Weldable Elbow Tube Fittings: Superior Performance for Semiconductor Applications

Our weldable elbow tube fittings are crafted from high-quality 304 series stainless steel, ensuring durability and reliability in demanding environments. These fittings are specifically designed for use in semiconductor process equipment, making them ideal for roughing lines and foreline and pump exhaust lines in semiconductor subfabs.

Features of Our Weldable Elbows

  • Maximum Cleanliness: Designed for ultra-high vacuum (UHV) applications, these fittings achieve cleanliness levels exceeding 10<sup>-13</sup> Torr, crucial for maintaining optimal operating conditions.
  • Wide Temperature Range: Capable of withstanding temperatures from -200 °C to 450 °C, our weldable elbows are versatile for various applications.
  • Design Options: Available in both radius and miter designs, these fittings can be tailored to meet specific installation needs.
  • Customizable Specifications: We provide a selection of common wall thicknesses and tube diameters. For unique requirements or flanged versions, please reach out to us for assistance.

Explore the advantages of our weldable elbow tube fittings and enhance your semiconductor applications with reliable, high-performance solutions.

Specifications

Vacuum Range≥ 1×10-13 Torr.
Temperature Range-200° to 450° C

Ordering Table

Weldable Tube 90° Radius Elbows

Drawing WallThickness DimA RadiusR TubeOD Part Number
Tooltip 0.05 0.75 0.75 0.50 G-2WC-050
Tooltip 0.04 1 1 0.75 G-2WC-075
Tooltip 0.04 1.42 1 0.75 G-2WC-075H
Tooltip 0.07 1.5 1.5 1 G-2WC-100
Tooltip 0.07 1.82 1.5 1 G-2WC-100H
Tooltip 0.07 2.06 1.5 1 G-2WC-100HW
Tooltip 0.07 2.25 2.25 1.5 G-2WC-150
Tooltip 0.07 2.41 2.25 1.5 G-2WC-150H
Tooltip 0.07 4.97 2.25 1.5 G-2WC-150HL
Tooltip 0.07 2.94 2.25 1.5 G-2WC-150HW
Tooltip 0.07 3 3 2 G-2WC-200
Tooltip 0.07 4.06 3 2 G-2WC-200H
Tooltip 0.07 5.36 3 2 G-2WC-200HL
Tooltip 0.07 3.75 3.75 2.5 G-2WC-250
Tooltip 0.07 5.19 3.75 2.5 G-2WC-250H
Tooltip 0.07 4.5 4.5 3 G-2WC-300
Tooltip 0.07 6.31 4.5 3 G-2WC-300H
Tooltip 0.08 6 6 4 G-2WC-400
Tooltip 0.08 8.31 6 4 G-2WC-400H

 

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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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