» ISO-K 63 - 630 mm

The ISO-K flange system utilizes a multiple clamp system. This is an economical and reusable solution for rapid and frequent assembly and disassembly. The ISO-K flanges can operate in high vacuum environments to pressures in the range of 1x10-8mbar (1x10-8 torr). Trinos stocks ISO-K flange components in metric and imperial tube sizes. Custom ISO-K flange or tube sizes are available upon request. Smaller flange sizes are available in a single clamping style known as the ISO-KF Flange system. ISO-K Flange System with clamps
ISO-K Flange System with clamps
Number of Clamps
The number of clamps needed for an ISO-K flange system is based on the size of the ISO-K flange.

Inch-Metric ISO Comparison
ISO-K Flange Size Recommended Number of clamps Number x Grip
when assembling on a baseplate
63 4 4 x M8 x 35
80 4 8 x M8 x 35
100 4 8 x M8 x 35
160 4 8 x M10 x 40
200 6 12 x M10 x 40
250 6 12 x M10 x 40
320 8 12 x M12 x 50
400 8 16 x M12 x 50
500 12 16 x M12 x 50
630 12 20 x M12 x 55
Trinos Reference ID mm ID Inches Flange OD inches
ISO-KF Flange System
ISO-KF 16 16 0.63 1.2
ISO-KF 25 24 0.94 1.6
ISO-KF 40 40.5 1.6 2.2
ISO-KF 50 50.6 2 3
ISO-K Flange System
ISO-K 63 70.1 2 ¾ 3.74
ISO-K 80 82.9 3 ¼ 4.33
ISO-K 100 102 4 5.12
ISO-K 160 153 6 7.09
ISO-K 200 213 8.4 9.45
ISO-K 250 267 10 ½ 11.42
ISO-K 320 318 12 ½ 14.57
ISO-K 400 400 15 ¾ 17.72
ISO-K 500 502 19 ¾ 21.65
ISO-K 630 654 25 ¾ 27.17

Items
ISO-K Blank Flange (304 SS, 316L & Steel zinc plated)
3x0FBL
 ISO-K Blank Flange (304 SS, 316L & Steel zinc plated) Details...
ISO-K Weld Flanges (304 SS, 316L & Steel zinc plated)
3x0FAN
 ISO-K Weld Flanges (304 SS, 316L & Steel zinc plated) Details...
ISO-K Half Nipple (304 SS, 316L & Steel zinc plated)
320FRA
 ISO-K Half Nipple (304 SS, 316L & Steel zinc plated) Details...
ISO-K Full Nipples, 304 SS
320RZS
 ISO-K Full Nipples, 304 SS Details...
ISO-K Reducers, 304 SS
320RRG
 ISO-K Reducers, 304 SS Details...
ISO-K Conical Reducers, 304 SS
3x0RRKxxx-06
 ISO-K Conical Reducers, 304 SS Details...
Straight Reducers, ISO-K to ISO-KF, 304 SS
320RRGxxx-01-05
 Straight Reducers, ISO-K to ISO-KF, 304 SS Details...
Conical Reducers, ISO-K to ISO-KF, 304 SS
3x0RRKxxx-01-05
 Conical Reducers, ISO-K to ISO-KF, 304 SS Details...
Reducer CF to ISO-K, 304L SS
420RUGxxx-06
 Reducer CF to ISO-K, 304L SS Details...
ISO-K Adaptor Flanges, 304 SS
320FLR
 ISO-K Adaptor Flanges, 304 SS Details...
ISO-K Elbows 90°, 304 SS
320RWSxxx-90
 ISO-K Elbows 90°, 304 SS Details...
ISO-K Elbows 45°, 304 SS
320RWSxxx-45
 ISO-K Elbows 45°, 304 SS Details...
ISO-K Tees, 304 SS
320RTS
 ISO-K Tees, 304 SS Details...
ISO-K Reducer Tees, 304 SS
320RTR
 ISO-K Reducer Tees, 304 SS Details...
ISO-K 4 - Way Crosses, 304 SS
320RKS
 ISO-K 4 - Way Crosses, 304 SS Details...
ISO-K Reducer Crosses, 304 SS
320RKR
 ISO-K Reducer Crosses, 304 SS Details...
ISO-K 5 - Way Crosses, 304 SS
320RKF
 ISO-K 5 - Way Crosses, 304 SS Details...
ISO-K 6 - Way Cross, 304 SS
320RKD
 ISO-K 6 - Way Cross, 304 SS Details...
ISO-K Instrument Cross, 304 SS
320RKM
 ISO-K Instrument Cross, 304 SS Details...
ISO- K Cubes, 304 SS
3x0RKK
 ISO- K Cubes, 304 SS Details...
ISO-K VCR Adapters
320AVM
 ISO-K VCR Adapters Details...
ISO-F / ISO-K Door
520KTU
 ISO-F / ISO-K Door Details...
ISO-K Swagelok Adapters
320ASW
 ISO-K Swagelok Adapters Details...
ISO-K Flange Adapters, Pipe Thread, male
320AED
 ISO-K Flange Adapters, Pipe Thread, male Details...
ISO-K Hose Adapter, 304 SS
320ASP
 ISO-K Hose Adapter, 304 SS Details...
ISO-K Distance Flanges with one port, 304 SS
320FDP
 ISO-K Distance Flanges with one port, 304 SS Details...
ISO-K Flexible Metal Hoses, 304L SS
320SWN
 ISO-K Flexible Metal Hoses, 304L SS Details...
ISO-K Flexible Metal Hoses, 304L SS, annealed
320SWG
 ISO-K Flexible Metal Hoses, 304L SS, annealed Details...
ISO-K Bellows (304L SS, 316L, 316Ti)
3x0SFK
 ISO-K Bellows (304L SS, 316L, 316Ti) Details...
ISO-K Bellows with Weld Ends, 316L
370SFA
 ISO-K Bellows with Weld Ends, 316L Details...
ISO-K Hoses, PVC, Fixed Length
300SPA
 ISO-K Hoses, PVC, Fixed Length Details...
ISO-K Hoses, PVC
330SPM
 ISO-K Hoses, PVC Details...
ISO-K Hose Clamps, Steel zinc plated
3x0SSS
 ISO-K Hose Clamps, Steel zinc plated Details...
ISO-K Sleeves, Neopren
330SMA
 ISO-K Sleeves, Neopren Details...
ISO-K Sleeve Couplings, Aluminium
310FMA
 ISO-K Sleeve Couplings, Aluminium Details...
ISO-K Centering Rings (304 SS & Aluminium, Buna & Viton)
3xxZRG
 ISO-K Centering Rings (304 SS & Aluminium, Buna & Viton) Details...
ISO-K Centering Rings with Outer Ring (304 SS & Aluminium, Buna & Viton)
3xxZRA
 ISO-K Centering Rings with Outer Ring (304 SS & Aluminium, Buna & Viton) Details...
ISO-K Centering Rings with Wire Mesh, 304 SS & Viton
322ZRD
 ISO-K Centering Rings with Wire Mesh, 304 SS & Viton Details...
ISO-K Metal Seal Ring, Aluminium
310ZSK
 ISO-K Metal Seal Ring, Aluminium Details...
ISO-K Centering Rings, 304 SS without O-Ring
320ZRG
 ISO-K Centering Rings, 304 SS without O-Ring Details...
ISO-K O-Rings (Buna, Viton & Silicon)
30xDOR
 ISO-K O-Rings (Buna, Viton & Silicon) Details...
ISO-K Claw Grips (304L SS, Aluminium & Steel zinc plated)
3x0BPR
 ISO-K Claw Grips (304L SS, Aluminium & Steel zinc plated) Details...
ISO-K Claw Clamps (304L SS, Aluminium & Steel zinc plated)
3x0BKL
 ISO-K Claw Clamps (304L SS, Aluminium & Steel zinc plated) Details...
ISO-K Rotatable Bolt Rings (304 SS & Steel zinc plated)
3x0FLU
 ISO-K Rotatable Bolt Rings (304 SS & Steel zinc plated) Details...
ISO-K Protection Caps
330FSK
 ISO-K Protection Caps Details...
Stainless Steel Pipe
3x0RRO
 Stainless Steel Pipe Details...