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45° KF (QF) HV Radius Elbows

45° KF (QF) HV Radius Elbows

45° KF (QF) HV Radius Elbows are precision-engineered components used in high-vacuum (HV) and ultra-high-vacuum (UHV) systems. These elbows are designed to provide a smooth, controlled 45-degree directional change in vacuum lines, maintaining optimal gas flow and reducing the risk of turbulence, pressure loss, and contamination in vacuum systems.

Key Features

  • Material: Made from high-quality stainless steel (304L or 316L), ensuring durability, excellent resistance to corrosion, and minimal outgassing for enhanced vacuum performance.

  • 45° Bend Design: The 45-degree bend allows for more flexible vacuum system configurations, ideal for systems with limited space while still requiring efficient gas flow.

  • KF (QF) Flange Connection: Compatible with ISO-KF (QF) fittings, providing fast, secure, and leak-tight connections without the need for welding or special tools.

  • Leak-Tight Performance: Precision machining ensures tight, reliable seals to prevent leaks in high-vacuum and UHV environments.

  • High-Performance: Helps maintain smooth gas flow with minimal pressure drop and turbulence, enhancing the performance of the vacuum system.

Applications

  • Semiconductor Industry: Used in vacuum systems for processes such as thin film deposition, plasma etching, and ion implantation, where maintaining precise vacuum conditions is crucial.

  • Research & Development: Ideal for scientific laboratories using vacuum chambers for various types of research, including electron microscopy, spectroscopy, and high-energy physics experiments.

  • Vacuum Coating and Sputtering: Essential in industries that require precise vacuum environments for thin-film deposition in the production of electronics, optics, and solar panels.

  • Industrial Vacuum Systems: Suitable for aerospace, chemical, pharmaceutical, and other industries where high-vacuum systems are vital for manufacturing and research processes.

Why Choose TFM’s 45° KF (QF) HV Radius Elbows?

  • Enhanced Flexibility: The 45° angle allows for better system flexibility in tight spaces without sacrificing performance.

  • Leak-Free Operation: Ensures leak-tight, reliable seals for high-vacuum applications.

  • Durable and Corrosion-Resistant: Constructed from high-quality stainless steel to withstand demanding environments and ensure long-lasting performance.

  • Minimized Gas Flow Disruptions: Designed to reduce turbulence and pressure drop, ensuring smooth and efficient vacuum system operation.

  • Customizable Sizes: Available in various diameters and configurations to meet specific vacuum system requirements.

Ordering Table

Flange Size/OD Type Flange Material Drawing Nominal Tube OD Wall Thickness Part Number
KF16 (1.18" OD) Elbow, 45 Degree 304L SS Tooltip 3/4 0.065 QF16-075-E45
KF25 (1.57" OD) Elbow, 45 Degree 304L SS Tooltip 1 0.065 QF25-100-E45
KF40 (2.16" OD) Elbow, 45 Degree 304L SS Tooltip 1-1/2 0.065 QF40-150-E45
KF50 (2.95" OD) Elbow, 45 Degree 304L SS Tooltip 2 0.065 QF50-200-E45

Access0ries Table

Description For Per Package Part Number
Cast Clamps (SS) KF10, KF16 Flanges 1 QF16-075-CS
Cast Clamps (SS) KF25 Flanges 1 QF25-100-CS
Cast Clamps (SS) KF40 Flanges 1 QF40-150-CS
Cast Clamps (SS) KF50 Flanges 1 QF50-200-CS
Cast Clamps (Aluminum) KF10, KF16 Flanges 1 QF16-075-C
Cast Clamps (Aluminum) KF25 Flanges 1 QF25-100-C
Cast Clamps (Aluminum) KF40 Flanges 1 QF40-150-C
Cast Clamps (Aluminum) KF50 Flanges 1 QF50-200-C
Lever Clamps (Aluminum) KF10, KF16 Flanges 1 QF16-075-CHA
Lever Clamps (Aluminum) KF25 Flanges 1 QF25-100-CHA
Lever Clamps (Aluminum) KF40 Flanges 1 QF40-150-CHA
Centering Ring (SS with Fluorocarbon O-Ring) KF10 Flanges 1 QF10-050-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF16 Flanges 1 QF16-075-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF25 Flanges 1 QF25-100-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF40 Flanges 1 QF40-150-SRV
Centering Ring (SS with Fluorocarbon O-Ring) KF50 Flanges 1 QF50-200-SRV
Description For Per Package Part Number

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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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