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KF Fittings

The KF ranges of flanges and fittings are manufactured from high quality stainless steel. KF flanges utilize an aluminium clamp with a single wingnut fastener allowing frequent disassembly without tools.

The vacuum seal is effected by uniform applications of pressure by the clamp on the 15° surface of the flange. The mating flange surfaces compress an ‘O’-ring (held in place by a metal ring) to produce a seal that can used in vacuum applications down to 10-8 mbar and baked to 200°C (sustained to 150°C)

Advanced sealing material such as aluminium or copper may be used, when the joints have to be operated or baked at elevated temperatures or if high corrosion resistance and/or electrical insulation are required.

Our vacuum components are bead-blasted inside and outside, unless otherwise stated. The sealing faces are polished mechanically.

All components are subjected to a leak testing protocol.

KF50 57mm Bored Flange SKU: KF50B57 KF Flanges (Klien) are the standard din 28430 & ISO 2861 connections for vacuum fittings up to DN50 used in low & high vacuum. Along with the ancillary components they offer a simple solution for applications requiring easy and repeated assembly.Sealing is accomplished with a centering with a nitrile or viton o’ring squashed between a pair of KF Flanges and pulled together using a circumferental clamp.KF Bored Flanges points:Material: 304L stainless steelBakeable to 150° CVacuum Rating: 1×10-8 mbarWide range of elbows, crosses & tees are availableTubulated Flanges are available for welding to stainless steel tubeKF Bored flanges are used for welding onto tube to produce ports and connectors when manufacturing fabrications.Manufactured from: 304 Stainless Steel. KF Bored flanges are supplied in a sealed plastic bag with a protective plastic cap.KF Bored flanges are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 12.98 12.98 GBP	KF50 Blank Flange SKU: KF50BS KF Flanges (Klien) are the standard din 28430 & ISO 2861 connections for vacuum fittings up to DN50 used in low & high vacuum. Along with the ancillary components they offer a simple solution for applications requiring easy and repeated assembly.Sealing is accomplished with a centering with a nitrile or viton o’ring squashed between a pair of KF Flanges and pulled together using a circumferental clamp.KF Blank Flanges points:Material: 304L stainless steelBakeable to 150° CVacuum Rating: 1×10-8 mbarWide range of elbows, crosses & tees are availableTubulated Flanges are available for welding to stainless steel tubeKF Blank flanges are used to cap off the open ports where not required and are also used as a base part to manufacture adaptor fittings, instruments, feedthroughs etc.Manufactured from: 304 Stainless Steel. KF Blank flanges are supplied in a sealed plastic bag with a protective plastic cap.KF Blank flanges are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 6.85 6.8500000000000005 GBP	KF50 Clamp - Aluminium SKU: KF50C KF Clamps Aluminium are used to clamp two flanges to a Centering ring and an O Ring creating a vacuum seal. KF Clamps Aluminium are manufactured from aluminium and are supplied in a sealed plastic bag. KF Clamps Aluminium are manufactured to the ISO standard and are compatible with other supplier’s products. £ 5.99 5.99 GBP	KF50 to KF16 Tubulated Reducing Adaptor SKU: KF50R16 KF Tubulated Reducing Adaptors are used to change the size of a tube or flange from one size to another. This enables mismatched components to be fitted together.Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Tubulated Reducing Adaptors are supplied in a sealed plastic bag with protective plastic caps.KF Tubulated Reducing Adaptors are manufactured to the ISO Standard. They are compatible with other suppliers’ products. £ 44.95 44.95 GBP
KF50 to KF25 Tubulated Reducing Adaptor SKU: KF50R25 KF Tubulated Reducing Adaptors are used to change the size of a tube or flange from one size to another. This enables mismatched components to be fitted together.Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Tubulated Reducing Adaptors are supplied in a sealed plastic bag with protective plastic caps.KF Tubulated Reducing Adaptors are manufactured to the ISO Standard. They are compatible with other suppliers’ products. £ 39.40 39.4 GBP	KF50 to KF40 Tubulated Reducing Adaptor SKU: KF50R40 KF Tubulated Reducing Adaptors are used to change the size of a tube or flange from one size to another. This enables mismatched components to be fitted together.Manufactured from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Tubulated Reducing Adaptors are supplied in a sealed plastic bag with protective plastic caps.KF Tubulated Reducing Adaptors are manufactured to the ISO Standard. They are compatible with other suppliers’ products. £ 65.98 65.98 GBP	KF50 Stainless Steel Centering Ring with Viton O-Ring SKU: KF50SVCR KF Stainless Steel Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp.Manufactured from 304 stainless steel and Viton. KF Stainless Steel Centering Rings are supplied in a sealed plastic bag.KF Stainless Steel Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products £ 4.99 4.99 GBP	KF50 Stainless Steel Meshed Centering Ring with Viton O-Ring SKU: KF50SVCRM KF Stainless Steel Reducing Centering Rings are used to connect two flanges of different internal sizes. This creates a vacuum seal with the use of a clamp. Manufactured from 304 stainless steel and Viton. KF Stainless Steel Reducing Centering Rings are supplied in a sealed plastic bag. KF Stainless Steel Reducing Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 39.20 39.2 GBP
KF50 Trapped Centre ring with Viton O-Ring SKU: KF50SVCRT KF50 Trapped Centering Ring with Viton O-Ring KF Trapped Centering Rings with Viton O-rings are used to connect two flanges together and create a vacuum seal with the use of a clamp they also provide for cases of slight over pressure. Manufactured from 304 stainless steel, Aluminium and Viton. KF Trapped Centering Rings are supplied in a sealed plastic bag. KF Trapped Centering Rings are manufactured to the ISO standard and are compatible with other supplier’s products. £ 8.41 8.41 GBP	KF10 – 60mm Long – Straight Connector (Full Nipples) SKU: SC10K60 KF Straight Connectors are used to extend ports and pipework to a required length. Constructed from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Straight Connectors are supplied in a sealed plastic bag and protected by plastic caps. KF Straight Connectors are compatible with other supplier’s products. Connectors are manufactured to the ISO Standard and are compatible with other supplier’s product.	KF16 - 80mm Long - Straight Connector (Full Nipples) SKU: SC16K KF Straight Connectors are used to extend ports and pipework to a required length.Constructed from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Straight Connectors are supplied in a sealed plastic bag and protected by plastic caps.KF Straight Connectors are compatible with other supplier’s products. Connectors are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 26.25 26.25 GBP	KF25 - 100mm Long - Straight Connector (Full Nipples) SKU: SC25K KF Straight Connectors are used to extend ports and pipework to a required length.Constructed from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Straight Connectors are supplied in a sealed plastic bag and protected by plastic caps.KF Straight Connectors are compatible with other supplier’s products. Connectors are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 29.90 29.900000000000002 GBP
KF40 - 130mm Long - Straight Connector (Full Nipples) SKU: SC40K KF Straight Connectors are used to extend ports and pipework to a required length.Constructed from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Straight Connectors are supplied in a sealed plastic bag and protected by plastic caps.KF Straight Connectors are compatible with other supplier’s products. Connectors are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 39.95 39.95 GBP	KF50 - 140mm Long - Straight Connector (Full Nipples) SKU: SC50K KF Straight Connectors are used to extend ports and pipework to a required length.Constructed from: 304 Stainless Steel. Helium Leak tested to 10-8 mbar. KF Straight Connectors are supplied in a sealed plastic bag and protected by plastic caps.KF Straight Connectors are compatible with other supplier’s products. Connectors are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 35.50 35.5 GBP	KF16 Tee SKU: TE16K KF Tees are used to bring in branch lines of matching sizes into a single main line. Manufactured from: 304 stainless steel. Helium Leak tested to 10-8 mbar. KF Tees are supplied in a sealed plastic bag protected by plastic caps. KF Tees are compatible with other supplier’s products and are manufactured to the ISO Standard. £ 31.20 31.2 GBP	KF25 Tee SKU: TE25K KF Tees are used to bring in branch lines of matching sizes into a single main line. Manufactured from: 304 stainless steel. Helium Leak tested to 10-8 mbar. KF Tees are supplied in a sealed plastic bag protected by plastic caps. KF Tees are compatible with other supplier’s products and are manufactured to the ISO Standard. £ 36.01 36.01 GBP
KF40 Tee SKU: TE40K KF Tees are used to bring in branch lines of matching sizes into a single main line. Manufactured from: 304 stainless steel. Helium Leak tested to 10-8 mbar. KF Tees are supplied in a sealed plastic bag protected by plastic caps. KF Tees are compatible with other supplier’s products and are manufactured to the ISO Standard. £ 43.50 43.5 GBP	KF50 Tee SKU: TE50K KF Tees are used to bring in branch lines of matching sizes into a single main line. Manufactured from: 304 stainless steel. Helium Leak tested to 10-8 mbar. KF Tees are supplied in a sealed plastic bag protected by plastic caps. KF Tees are compatible with other supplier’s products and are manufactured to the ISO Standard. £ 59.90 59.9 GBP	KF10 - 30mm Long - Tubulations (Half Nipples) SKU: TU10K30 KF Tubulations are used to weld into other fabricated parts to produce ports for instruments and feedthrough attachments.Manufactured from: 304 Stainless Steel. KF Tubulations are supplied in a sealed plastic bag with a protective plastic cap.KF Tubulations are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 7.50 7.5 GBP	KF16 - 30mm Long - Tubulations (Half Nipples) SKU: TU16K30 KF Tubulations are used to weld into other fabricated parts to produce ports for instruments and feedthrough attachments.Manufactured from: 304 Stainless Steel. KF Tubulations are supplied in a sealed plastic bag with a protective plastic cap.KF Tubulations are manufactured to the ISO Standard and are compatible with other supplier’s product. £ 6.10 6.1000000000000005 GBP