ISO Vacuum Fittings Overview

The ISO range of fittings and flanges are manufactured from stainless steel to a high quality.

Fig 2 shows all the configurations; using wall clamps, double claw clamps or bolts tightening together two flanges onto an ‘O’ ring seal (made of Nitrile or Viton) held in place by a centering ring.

There are various types of ISO flanges:

1. ISO-K (clamp) flanges with a grooved ring for inserting wall clamps and double claw clamps are smaller and less expensive.
2. ISO-F ( fixed) flanges with a set of through-bore holes are pressed together with Nuts and Bolts. They are more stable than ISO-K flanges which enable them to mechanically support parts of the vacuum chamber.
3. ISO bolt rings are used to make an ISO-K flange into rotatable ISO-F flanges.

Material: Stainless steel 304L Bakeable to 200’C (150’C continuous) Vacuum rating 1×10-8mbar

Wide range of Crosses , Elbows & Tees are available

Bored Flanges For Welding To Stainless Steel Tube

NW of the flange	no. of required clamps
NW 63	4
NW 80	4
NW 100	4
NW 160	4
NW 200	6
NW 250	6
NW 320	8
NW 400	8
NW 500	12
NW 630	12

1. ISO-K flange fixed to vacuum chamber using wall clamps
2. ISO-K flange fixed to ISO-F flange using wall clamps, nuts and washers
3. . Two ISO-K flanges fixed together using double claw clamps, which is the most commonly used configuration
4. ISO-F flange fixed to vacuum chamber using bolts, washers and tapped blind holes
5. ISO-K flange fixed to ISO-F flange using bolt rings, bolts, nuts and washers
6. Two ISO-F flanges fixed together using bolts, nuts and washers

ISO Claw Clamp Blank Flanges	ISO Fixed Bolted Blank Flanges	ISO Claw Clamp Bored Flanges

ISO Fixed Bolted Bored Flanges	ISO Claw Clamp Tubulations	ISO Straight Connectors

ISO Tubulated Reducing Connectors	ISO TO CF Tubulated Adaptors	ISO TO KF Tubulated Adaptors

ISO Tees	ISO Unequal Tees Stainless Steel	ISO TO KF Reducing Cross

ISO to KF Reducing Tee	ISO 45 Degree Bend Elbows	ISO 90 Degree Elbows

ISO 4-Way Crosses	ISO Reducing 4-Way Crosses, Stainless Steel	ISO 6-Way Crosses

ISO Flexible Hoses, Stainless Steel	ISO Hydroformed Flexible Bellows, Stainless Steel	ISO Wall Clamps Mild Steel, Zinc Plated

ISO Wall Clamps Stainless Steel	ISO Wall Clamps, Aluminium	ISO Wall Clamps, Steel Nuts And Washers, Aluminium

ISO Wall Clamps, Steel Nuts And Washers, Mild Steel, Zinc Plated	ISO Double Claw Clamps, Mild Steel, Zinc Plated	ISO Double Claw Clamps, Stainless Steel

ISO Double Claw Clamps, Aluminium	ISO Stainless Steel Centering Rings, Viton O Ring	ISO Aluminium Centering Rings, Viton O Ring

ISO Stainless Steel Centering Rings, Nitrile O Ring	ISO Aluminium Centering Rings Nitrile O Ring	ISO Stainless Steel Trapped Centering Rings, Viton O Ring, Aluminium Outer

ISO Aluminium Trapped Centering Rings, Nitrile O Ring, Outer Trap	ISO Stainless Steel Trapped Centering Rings with Nitrile O Ring Aluminium Outer	ISO Aluminium Trapped Centering Rings with Viton O Ring & Outer Trap

ISO Nut Bolt And Washer Sets For Two Bolted Flanges