NKE Sanitary Stainless Steel Tubes, Valves, and Fittings
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ISO Flange
ISO Flange
Like KF vacuum flanges, ISO flanges are commonly used in vacuum and ultra-high vacuum applications. ISO flanges come in sizes 2.5” (ISO65) and above.
The ISO Union contains ISO Claw Clamps, Two ISO Bored Flanges, and an ISO Centering Ring with Seal. ISO Blank Flanges can also be mated to the ISO Coupling. When the flanges are connected, the centering ring provides a seal that prevents air from leaking into the vacuum system, even in conditions with temperature and pressure.
ISO Flanges are easy to use and only require a spanner to tighten and loosen.
Coupling Material
ISO Claw Clamp in Aluminium, ISO Flanges and ISO Centering Ring in SS 304 or SS 316L
Seal Material
Viton
Size Ranges
From ISO65 to ISO200
Internal Surface Finish
< 1μm
ISO Flange
The ISO Flanges will be socket welded to tubes, fittings, and valves. Flanges with welding necks are also available but not very common. Available in SS 304 and SS 316L.
ISO O Ring
The ISO O ring sits in the middle of two ISO Flanges to act as a seal to prevent leakages. Material is usually Viton.
ISO Claw Clamp
The ISO Clamp is used to fasten two ISO Flanges together. The Claw Clamp is secured using bolts. At least 2 Claw Clamps are used per union depending on the size. Available in aluminium and SS 304.
ISO Blank Flange
The ISO Blank Flange is just a ISO Flange without an opening, it can replace the ISO flange to act as a cover to block flow. Available in SS 304 and SS 316L.
ISO Centering Ring
The ISO Centering Ring acts as a frame for the O Ring. An outer centering ring is also available if the ISO Flange is to handle pressure as well as vacuum. Available in SS 304 and SS 316L.
ISO Flange Dimensions | SS304 / SS316L | ISO-K | High Vacuum Rated
Size | For Tube OD (mm) | Flange OD (mm) | Length (mm) |
|---|---|---|---|
ISO63 | 63.5 | 95 | 11.94 |
ISO80 | 76.3 | 110 | 11.94 |
ISO100 | 101.4 | 130 | 11.94 |
ISO160 | 152 | 180 | 11.94 |
ISO200 | 203 | 240 | 11.94 |