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KF (QF) HV Centering Rings with Screen (SS)

KF (QF) HV Centering Rings with Screen (SS)

KF (QF) HV Centering Rings with Screen (SS)

In ultra-high vacuum (UHV) systems, achieving a leak-tight seal and precise alignment is crucial for maintaining system integrity and preventing contamination. KF (QF) HV Centering Rings with Screen (SS), designed and manufactured by TFM, are key components that ensure optimal performance in high-vacuum environments. These rings are specifically crafted to deliver a durable, reliable solution for sealing and aligning flanges in UHV applications.

What are KF (QF) HV Centering Rings with Screen (SS)?

The KF (QF) HV Centering Rings with Screen (SS) are designed to enhance vacuum integrity by providing both precise alignment and secure sealing between KF (QF) vacuum flanges. Constructed with a stainless steel screen, these centering rings offer increased strength and resistance to wear and tear, making them ideal for high-vacuum systems that require durability and long-term reliability.

These rings not only help in aligning and sealing the flanges but also play a critical role in preventing contamination by ensuring that no particles enter the vacuum system. The inclusion of a stainless steel screen offers added protection against damage from external elements, further enhancing the longevity and performance of the system.

Key Features of KF (QF) HV Centering Rings with Screen (SS)

  • Stainless Steel Screen: The stainless steel screen is designed to offer exceptional strength, corrosion resistance, and durability, ensuring a long service life even in harsh environments. It prevents particles from entering the system, contributing to the cleanliness and integrity of the vacuum.

  • Leak-Tight Sealing: The precise sealing function ensures that the vacuum integrity is maintained, preventing any loss of vacuum pressure and safeguarding the system against leaks.

  • Precise Alignment: These centering rings provide the necessary alignment between flanges, ensuring that the connection remains stable and consistent, even under varying pressures and temperatures.

  • Wide Compatibility: The rings are compatible with a variety of KF (QF) vacuum flanges, including KF10, KF16, KF25, KF40, and KF50. This broad compatibility allows for flexibility in a variety of vacuum systems.

Benefits of Using KF (QF) HV Centering Rings with Screen (SS)

  1. Durability: Made with high-quality stainless steel, these centering rings are built to withstand the harsh conditions of high-vacuum environments, ensuring a long-lasting solution for your vacuum systems.

  2. Leak Prevention: The stainless steel screen and O-ring combination work together to provide a reliable, leak-tight seal, which is critical for maintaining the vacuum integrity of the system.

  3. Prevents Contamination: By securely sealing the flanges, these centering rings prevent contamination from entering the system, making them ideal for sensitive applications such as semiconductor processing and analytical instrumentation.

  4. Easy Integration: Designed for compatibility with a wide range of KF (QF) flanges, these centering rings can be easily integrated into existing systems without requiring major modifications.

Applications of KF (QF) HV Centering Rings with Screen (SS)

The KF (QF) HV Centering Rings with Screen (SS) are essential components in a wide variety of applications, including:

  • Semiconductor Processing: These centering rings help maintain vacuum integrity in semiconductor equipment, where high precision and cleanliness are paramount.

  • Pumping Systems: The rings are crucial for sealing and aligning flanges in vacuum pumps, ensuring that the system maintains a consistent vacuum.

  • Vacuum Chambers: Whether for research or industrial purposes, these centering rings are used in vacuum chambers to create leak-tight connections between chamber components.

  • Analytical Instruments: These rings play a significant role in maintaining the performance of high-precision instruments used in laboratories and research settings.

Ordering Table

Drawing Flange OD Dim A Dim B Part Number
Tooltip KF16 0.5 0.67 QF16-SRV-SM
Tooltip KF25 0.86 1.03 QF25-SRV-SM
Tooltip KF40 1.45 1.61 QF40-SRV-SM
Tooltip KF50 1.88 2.05 QF50-SRV-SM

Accessories Table

Description Part Number
Vacuum and Lubricating Grease APMB
Replacement o-ring O-V314
Replacement o-ring O-V320
Replacement o-ring O-V326
Replacement o-ring O-V330

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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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