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ISO-K HV Bored Flanges (Clamped)

TFM’s ISO-K HV Bored Flanges (Clamped) are engineered for secure, leak-tight connections in high-vacuum (HV) systems. Featuring a clamped fastener design, these flanges are perfect for applications requiring high reliability and ease of installation.

Key Features:

  • Clamped Fasteners: Provides a secure, leak-proof connection, ideal for high-vacuum applications.
  • Durable Construction: Manufactured from 304L stainless steel, offering outstanding resistance to corrosion and high durability in demanding environments.
  • Bored Design: The bored center design ensures efficient flow through the flange, ideal for gases and fluids in vacuum systems.
  • Metal Centering Ring & O-Ring Seal: Includes a metal centering ring with an elastomeric o-ring to maintain precise alignment and a reliable seal.
  • Wide Temperature and Pressure Range: Suitable for applications operating in temperature ranges from 0°C to 120–180°C and pressures from atmospheric to ~10⁻⁸ torr.
  • Versatile Applications: Perfect for semiconductor processing, aerospace, and research labs that require high-performance vacuum systems.

TFM’s ISO-K HV Bored Flanges (Clamped) deliver optimal performance for various high-vacuum applications. Contact us for customized solutions or to find the right flange size for your system.

Ordering Table

ISO-K HV Bored Flanges (Clamped)

Flange Size/OD Type Flange Material Drawing Nominal Tube OD Bore Counter Bore Thickness Minimal Number of Clamps Optimal Number of Clamps Setback Part Number
ISO63-K (3.74" OD) Bored, Clamp Style 316L SS Tooltip 3 2.756 3.010 0.47 3 4 0.25 QF63-SWK-M
ISO63-K (3.74" OD) Bored, Clamp Style 304L SS Tooltip 2-1/2 2.44 2.510 0.47 3 4 0.25 QF63-SWK
ISO80-K (4.33" OD) Bored, Clamp Style 304L SS Tooltip 3 2.94 3.010 0.47 4 8 0.25 QF80-SWK
ISO80-K (4.33" OD) Bored, Clamp Style 316L SS Tooltip 3-1/2 3.268 3.510 0.47 4 8 0.25 QF80-SWK-M
ISO100-K (5.12" OD) Bored, Clamp Style 304L SS Tooltip 4 3.92 4.010 0.47 4 8 0.25 QF100-SWK
ISO100-K (5.12" OD) Bored, Clamp Style 316L SS Tooltip — 4.016 4.260 0.47 4 8 0.25 QF100-SWK-M
ISO160-K (7.09" OD) Bored, Clamp Style 304L SS Tooltip 6 5.92 6.020 0.47 4 8 0.25 QF160-SWK
ISO160-K (7.09" OD) Bored, Clamp Style 316L SS Tooltip — 6.024 6.280 0.47 4 8 0.25 QF160-SWK-M
ISO200-K (9.45" OD) Bored, Clamp Style 316L SS Tooltip — 8.386 8.640 0.47 6 12 0.25 QF200-SWK-M
ISO200-K (9.45" OD) Bored, Clamp Style 304L SS Tooltip 8 7.88 8.020 0.47 6 12 0.25 QF200-SWK
ISO250-K (11.42" OD) Bored, Clamp Style 304L SS Tooltip 10 9.88 10.020 0.47 6 12 0.25 QF250-SWK
ISO250-K (11.42" OD) Bored, Clamp Style 316L SS Tooltip 10-1/2 10.276 10.530 0.47 6 12 0.25 QF250-SWK-M
ISO320-K (14.57" OD) Bored, Clamp Style 304L SS Tooltip 12-3/4 12.52 12.770 0.67 8 12 0.37 QF320-SWK
ISO320-K (14.57" OD) Bored, Clamp Style 316L SS Tooltip 12-3/4 12.52 12.780 0.67 8 12 0.37 QF320-SWK-M
ISO400-K (17.72" OD) Bored, Clamp Style 316L SS Tooltip 16 15.748 16.020 0.67 8 16 0.37 QF400-SWK-M
ISO400-K (17.72" OD) Bored, Clamp Style 304L SS Tooltip 16 15.62 16.020 0.67 8 16 0.37 QF400-SWK
ISO500-K (21.65" OD) Bored, Clamp Style 304L SS Tooltip 20 19.62 20.020 0.67 12 16 0.37 QF500-SWK
ISO500-K (21.65" OD) Bored, Clamp Style 316L SS Tooltip 20 19.724 20.020 0.67 12 16 0.37 QF500-SWK-M
ISO630-K (27.17" OD) Bored, Clamp Style 304L SS Tooltip 24 23.81 24.020 0.87 14 18 0.50 QF630-SWK
ISO630-K (27.17" OD) Bored, Clamp Style 316L SS Tooltip 26 25.630 26.020 0.87 14 18 0.50 QF630-SWK-M

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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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