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KF (QF) HV 6-Way Crosses

KF (QF) HV 6-Way Crosses

KF (QF) HV 6-Way Crosses: Versatile Connectivity for High Vacuum Systems

KF (QF) HV 6-Way Crosses are precision-engineered components designed to meet the rigorous demands of high vacuum (HV) environments. Built to ISO-KF standards, these crosses are ideal for creating multi-port junctions within vacuum systems where space optimization and configuration flexibility are critical.

Built for Performance and Reliability

Manufactured from high-quality stainless steel or aluminum alloy, KF 6-Way Crosses offer excellent corrosion resistance, mechanical strength, and vacuum integrity. Their design enables six flanged ports to meet at right angles, forming a symmetric hub for mounting multiple instruments or vacuum lines.

Each port features a KF (QF) flange, ensuring seamless integration with standard vacuum hardware such as pumps, pressure gauges, viewport windows, feedthroughs, and valves. With vacuum-tight connections achievable through clamp and centering ring assemblies, these components support rapid setup and modification while maintaining system stability.

Applications Across Industries

These 6-way crosses are commonly used in vacuum R&D, thin film deposition systems, semiconductor fabrication, and analytical instruments. Their compact and modular structure makes them ideal for building custom vacuum networks or integrating multiple devices in a confined footprint.

Advantages of KF 6-Way Crosses

  • Multi-port access: Connect up to six components from a single central location.

  • Ease of use: Tool-free assembly with standard KF clamp systems.

  • Leak-tight design: Compatible with O-ring centering rings for high-seal performance.

  • Material options: Available in stainless steel or lightweight aluminum for different system requirements.

Whether you’re expanding an existing HV system or designing a new vacuum chamber, KF (QF) HV 6-Way Crosses provide the connectivity, durability, and standardization required for dependable performance.

Ordering Table

Flange Size/OD Type Flange Material Drawing Nominal Tube OD Wall Thickness Part Number
KF16 (1.18" OD) Cross, 6-Way 304L SS Tooltip 3/4 0.065 QF16-075-6X
KF25 (1.57" OD) Cross, 6-Way 304L SS Tooltip 1 0.065 QF25-100-6X
KF40 (2.16" OD) Cross, 6-Way 304L SS Tooltip 1-1/2 0.065 QF40-150-6X
KF50 (2.95" OD) Cross, 6-Way 304L SS Tooltip 2 0.065 QF50-200-6X

Accessories 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

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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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