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ISO HV Centering Rings (Al)

TFM supplies centering rings for mating ISO flanges, including both the centering ring and o-ring. These Large ISO flanges are used in high vacuum (HV) chamber ports and are available in two styles: ISO-K, which uses clamp fasteners, and ISO-F, which requires nut and bolt fasteners.

ISO Centering Rings Features:

  • Available in stainless steel inner with aluminum outer combination or fully aluminum.
  • Standard o-ring materials include Fluorocarbon (FKM) and Buna-N, with Neoprene available as an additional option.

Ordering Table

Flange OD Reference O-Ring Material Part Number
ISO63 Aluminum Centering Ring Fluorocarbon QF63-AAVR
ISO80 Aluminum Centering Ring Fluorocarbon QF80-AAVR
ISO100 Aluminum Centering Ring Fluorocarbon QF100-AAVR
ISO160 Aluminum Centering Ring Fluorocarbon QF160-AAVR
ISO200 Aluminum Centering Ring Fluorocarbon QF200-AAVR
ISO250 Aluminum Centering Ring Fluorocarbon QF250-AAVR
ISO320 Aluminum Centering Ring Fluorocarbon QF320-AAVR
ISO400 Aluminum Centering Ring Fluorocarbon QF400-AAVR
ISO500 Aluminum Centering Ring Fluorocarbon QF500-AAVR
ISO630 Aluminum Centering Ring Fluorocarbon QF630-AAVR
ISO63 Aluminum Centering Ring Buna-N QF63-AABR
ISO80 Aluminum Centering Ring Buna-N QF80-AABR
ISO100 Aluminum Centering Ring Buna-N QF100-AABR
ISO160 Aluminum Centering Ring Buna-N QF160-AABR
ISO200 Aluminum Centering Ring Buna-N QF200-AABR
ISO250 Aluminum Centering Ring Buna-N QF250-AABR
ISO320 Aluminum Centering Ring Buna-N QF320-AABR
ISO400 Aluminum Centering Ring Buna-N QF400-AABR
ISO500 Aluminum Centering Ring Buna-N QF500-AABR
ISO630 Aluminum Centering Ring Buna-N QF630-AABR
ISO63 Aluminum Centering Ring Neoprene QF63-AANR
ISO80 Aluminum Centering Ring Neoprene QF80-AANR
ISO100 Aluminum Centering Ring Neoprene QF100-AANR
ISO160 Aluminum Centering Ring Neoprene QF160-AANR
ISO200 Aluminum Centering Ring Neoprene QF200-AANR
ISO250 Aluminum Centering Ring Neoprene QF250-AANR
ISO320 Aluminum Centering Ring Neoprene QF320-AANR
ISO400 Aluminum Centering Ring Neoprene QF400-AANR
ISO500 Aluminum Centering Ring Neoprene QF500-AANR

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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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