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ISO-F HV Bolt Kits (tapped flanges)

ISO-F HV Bolt Kits (tapped flanges)

ISO-F HV Bolt Kits (Tapped Flanges): Secure Fastening for Threaded ISO-F High-Vacuum Flange Interfaces

ISO-F HV Bolt Kits (Tapped Flanges) are engineered for use with threaded (tapped) ISO-F flanges in high-vacuum (HV) systems. These kits include precision-matched bolts and washers, providing a clean, reliable, and easy-to-install fastening solution for ISO-standard flanges used in HV chambers, foreline systems, and modular vacuum assemblies.

ISO-F flanges, often referred to as Large ISO flanges, are widely used in high-vacuum technology. In their tapped version, ISO-F flanges are designed with pre-threaded holes that accept bolts directly—eliminating the need for nuts and simplifying installation. TFM’s ISO-F HV Bolt Kits are tailored for this configuration, ensuring full compatibility in both dimensions and material performance.

Key Features of ISO-F HV Bolt Kits (Tapped Flanges):

  • Designed for Tapped ISO-F Flanges
    Optimized for flanges with threaded holes, these bolt kits simplify installation while providing uniform sealing pressure.

  • Complete Fastening Kit
    Each kit includes the correct quantity of bolts and washers for a complete flange connection—no extra hardware or sourcing required.

  • Vacuum Integrity Support
    When used with ISO centering rings and elastomeric o-rings, these bolt kits contribute to secure sealing down to 10⁻⁸ Torr, maintaining HV performance.

  • Material Options
    Available in zinc-plated steel for general use or 304 stainless steel for enhanced corrosion resistance in chemical, cleanroom, or moisture-prone environments.

  • Sized for All Common ISO Flange Standards
    TFM offers ISO-F HV Bolt Kits for all standard ISO flange sizes, including ISO63, ISO100, ISO160, ISO200, ISO250, ISO320, and ISO400, with bolt lengths and diameters tailored to flange thickness and ISO specifications.

These bolt kits are ideal for vacuum engineers, maintenance technicians, and OEM system builders who require dependable, standardized fastening for tapped ISO-F connections. Whether you’re mounting ISO-F blanking plates, connecting ISO-F to ISO-K components, or sealing diagnostic or pumping ports, these kits offer a fast, accurate, and consistent fastening method.

Applications Include:

  • HV chamber port connections

  • ISO-F blank flange installations

  • ISO component mounting on tapped flanges

  • Retrofitting ISO-F flanges with new accessories

  • Semiconductor, thin-film, and research vacuum systems

TFM also offers ISO-F HV Bolt Sets for clearance hole (thru-hole) ISO-F flanges, which include bolts, washers, and nuts for complete assembly.

In summary, ISO-F HV Bolt Kits (Tapped Flanges) provide a complete, easy-to-use solution for securing ISO-F flanges with threaded holes in high-vacuum systems. Their precision, material quality, and standardization make them an essential part of vacuum system installation and maintenance workflows.

Ordering Table

ISO-F HV Bolt Sets (clearance flanges)

Flange OD Reference Per Package Length Thread Size Part Number
ISO63 Bolt Sets 4 1.6 M8 X 1.25P HBSM8X40-4
ISO80-ISO100 Bolt Sets 8 1.6 M8 X 1.25P HBSM8X40-8
ISO160 Bolt Sets 8 2 M10 X 1.5P HBSM10X50-8
ISO200-ISO250 Bolt Sets 12 2 M10 X 1.5P HBSM10X50-12
ISO320 Bolt Sets 12 2.4 M12 X 1.75P HBSM12X60-12
ISO400-ISO500 Bolt Sets 16 2.4 M12 X 1.75P HBSM12X60-16
ISO630 Bolt Sets 20 3 M12 X 1.75P HBSM12X65-20

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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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