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KF (QF) HV Claw Clamp Kit (SS)

KF (QF) HV Claw Clamp Kit (SS)

Introduction

KF (QF) HV Claw Clamp Kits made from stainless steel are essential components for assembling and securing vacuum flange connections in high vacuum (HV) systems. Designed for quick installation and reliable sealing, these clamp kits are widely used in laboratories, semiconductor processing, and industrial vacuum systems where frequent assembly and disassembly are required.

Detailed Description

KF (QF) claw clamp kits are engineered to connect standard KF (Quick Flange) fittings using a combination of a stainless steel clamp, centering ring, and elastomer O-ring (typically Viton). The claw-style clamp provides uniform pressure distribution around the flange, ensuring a secure and leak-tight connection.

Constructed from corrosion-resistant stainless steel (commonly SS304 or SS316), these clamps offer excellent mechanical strength and durability, even under repeated use. The ergonomic wing nut or bolt mechanism allows for tool-free or minimal-tool tightening, significantly reducing installation time compared to bolted flange systems.

The centering ring ensures proper alignment between mating flanges and houses the O-ring, which forms the vacuum seal. Depending on the application, different O-ring materials (Viton, Buna-N, EPDM) can be selected to accommodate varying ताप environments and chemical exposures.

KF clamp kits are standardized according to ISO-KF dimensions, making them fully compatible with a wide range of vacuum components including tubes, tees, crosses, valves, and adapters.

Key features include:

  • Stainless steel construction for corrosion resistance and durability

  • Quick-release design for fast assembly and disassembly

  • Uniform clamping force for reliable vacuum sealing

  • Compatibility with standard ISO-KF flange systems

  • Reusable components with long service life

Applications

KF (QF) HV claw clamp kits are widely used in:

  • High vacuum (HV) and rough vacuum systems

  • Semiconductor processing equipment

  • Thin film deposition systems (PVD, CVD)

  • Analytical instruments and mass spectrometers

  • Research laboratories and vacuum test setups

  • Leak detection and vacuum piping assemblies

Technical Parameters

ParameterTypical Value / RangeImportance
MaterialSS304 / SS316Corrosion resistance & strength
StandardISO-KF (QF)Ensures compatibility
Size RangeKF10 – KF50 (custom sizes available)Matches flange dimensions
Sealing ElementViton / NBR / EPDM O-ringDetermines sealing performance
Clamp TypeClaw clamp with wing nut/boltEnables quick installation
Operating PressureUp to ~10⁻⁸ mbar (with proper seal)Suitable for HV systems

Comparison with Related Materials

Material/SystemKey AdvantageTypical Application
KF Clamp Kit (SS)Quick connection, reusableGeneral HV systems
CF Flange SystemUltra-high vacuum capabilityUHV systems
ISO-K SystemLarger diameter handlingIndustrial vacuum lines
Aluminum ClampsLightweight, cost-effectiveLight-duty applications

FAQ

QuestionAnswer
What sizes are available?Standard sizes range from KF10 to KF50, with custom options available.
Are the clamps reusable?Yes, stainless steel clamps are designed for repeated use.
What O-ring materials can be used?Common options include Viton, NBR, and EPDM depending on application needs.
Is tool-free installation possible?Yes, most claw clamps feature wing nuts for quick manual tightening.
Can these be used in UHV systems?KF systems are typically used for HV; UHV applications usually require CF flanges.

Packaging

Our KF (QF) HV Claw Clamp Kits (SS) are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. We take great care to prevent any potential damage during storage and transportation, ensuring the products arrive in perfect condition.

Conclusion

KF (QF) HV Claw Clamp Kits in stainless steel provide a reliable, efficient, and user-friendly solution for vacuum system connections. Their robust construction, ease of use, and compatibility with ISO-KF standards make them indispensable components in modern vacuum technology setups.

For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

Ordering Table

Flange OD Per Package Material Part Number
KF10-KF50 4 Cast Steel VKF1050CCS

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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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