Klein flange vacuum flanges for EM
Vacuum fittings: KF40-40>25; KF25>19; KF40 for 19mm hose; VTR-19 tubing; SS Vac bellow KF40; plus KF clamps + rings
VACUUM CONNECTION FITTINGS

All NW/KF style vacuum connections conform to the international ISO 2861/I standard. KF series quick release flanges also comply with Standard GB4982-85.
Other vacuum components, which may include three-way types, blind plates, metal flexible corrugated pipes, callipers and bolts, heel blocks and holders, comply with the ISO Standard 9000:2000.
They are widely used in the assorted vacuum systems and low-voltage pipe systems, such as electronic, food machinery, the petrochemical industry, and medicine machinery.
Our vacuum fittings come with plastic protective caps which help protect the NW/KF flanges from scratches and dust.

v5add4
Vacuum Connections, Fittings and Flanges
ASK
45° Elbow for Vacuum
45° Elbow for Vacuum

45° ELBOW

These Elbow 45 Degrees fittings follow ISO-KF standards. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centring ring form the vacuum seal between the connecting flanges. The centring ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.

Cat. No.DN-KFA (mm)
VC2-45-KF40KF4035
45° Elbow diagram
VC2-45-KF16
Right-angle elbow, 45°, SS, KF16
ea
SHOP
VC2-45-KF25
Right-angle elbow, 45°, SS, KF25
ea
SHOP
VC2-45-KF40
Right-angle elbow, 45°, SS, KF40
ea
SHOP
VC2-45-KF50
Right-angle elbow, 45°, SS, KF50
ea
SHOP
Right angle mitre
Right angle mitre

STAINLESS STEEL RIGHT-ANGLE ELBOWS

This mitred elbow joint, also known as 'L' piece, is made from SS304.

DN-KFA
KF-1640
KF-2550
KF-4065
KF-5075
Vacuum mitered elbow
VC2-90M-KF16
Right-angle mitred elbow, 90°, SS, KF16
ea
SHOP
VC2-90M-KF25
Right-angle mitred elbow, 90°, SS, KF25
ea
SHOP
VC2-90M-KF40
Right-angle mitred elbow, 90°, SS, KF40
ea
SHOP
VC2-90M-KF50
Right-angle mitred elbow, 90°, SS, KF50
ea
SHOP
Right angle L piece elbow joint
Right angle L piece elbow joint

STAINLESS STEEL RIGHT-ANGLE ELBOWS

This elbow joint, also known as 'L' piece, is made from SS304.

DN-KFA
KF-1640
KF-2550
KF-4065
KF-5075

Reducing/adaptive elbows are available - ask

Vacuum elbow
Vacuum reducing elbow diagram
Vacuum reducing elbow diagram
Vacuum reducing elbow
Vacuum reducing elbow
VC2-90-KF16
Right-angle elbow, 90°, SS, KF16
ea
SHOP
VC2-90-KF25
Right-angle elbow, 90°, SS, KF25
ea
SHOP
VC2-90-KF40
Right-angle elbow, 90°, SS, KF40
ea
SHOP
VC2-90-KF50
Right-angle elbow, 90°, SS, KF50
ea
SHOP
180° Return Elbow
180° Return Elbow

180° RETURN ELBOW

Stainless steel

180° Return Elbow diagram
VC2-180-KF16
Return elbow, 180°, SS, KF16
ea
SHOP
VC2-180-KF25
Return elbow, 180°, SS, KF25
ea
SHOP
VC2-180-KF40
Return elbow, 180°, SS, KF40
ea
SHOP
VC2-180-KF50
Return elbow, 180°, SS, KF50
ea
SHOP
Vacuum T-piece
Vacuum T-piece

STAINLESS STEEL THREE-WAY CONNECTORS

These three way adapters, also known as 'T' piece or Tee, is made from SS304.

Three-way conflat adapter

DN-KFLA
KF-KF168040
KF-KF2510050
KF-KF4013065
KF-KF5014070
KF-16/2510050
Vacuum Tee Coupling
VC3-KF16
Three-way adapter, SS, KF16
ea
SHOP
VC3-KF25
Three-way adapter, SS, KF25
ea
SHOP
VC3-KF40
Three-way adapter, SS, KF40
ea
SHOP
VC3-KF50
Three-way adapter, SS, KF50
ea
SHOP
Three-way reducing adapter
Three-way reducing adapter

THREE-WAY REDUCING ADAPTERS

KF25/KF25/KF16

KF40/KF40/KF25

KF50/KF50/KF40

Reducing Tee diagram
VA3-KF25-25-16
Three-way reducing adapter, SS, KF25/KF25/KF16
ea
SHOP
VA3-KF40-40-25
Three-way reducing adapter, SS, KF40/KF40/KF25
ea
SHOP
VA3-KF50-50-40
Three-way reducing adapter, SS, KF50/KF50/KF40
ea
SHOP
Stainless Steel Four-Way Adapter
Stainless Steel Four-Way Adapter

STAINLESS FOUR-WAY TYPES

KF series four-way (mm)

Also known as X-piece, cross piece, and four way connector.
Made from SS304.

Cat. No.KF-DNAB
VC4-KF16KF-164080
VC4-KF25KF-2510050
VC4-KF40KF-4013065
VC4-KF50KF-5014070
Vacuum connector four-way
VC4-KF16
Four-way adapter, SS, KF16
ea
SHOP
VC4-KF25
Four-way adapter, SS, KF25
ea
SHOP
VC4-KF40
Four-way adapter, SS, KF40
ea
SHOP
VC4-KF50
Four-way adapter, SS, KF50
ea
SHOP
Reducing 4-Way Crosses Adapter
Reducing 4-Way Crosses Adapter
FOUR-WAY REDUCING ADAPTERS

SS304

40-16-40-16, 50-16-50-16, 50-25-50-25 are also available - ask.

Four-way reducing adapter
VA4-KF25-16-25-16
Four-way reducing adapter, SS, KF25/KF16/KF25/KF16
ea
SHOP
VA4-KF40-25-40-25
Four-way reducing adapter, SS, KF40/KF25/KF40/KF25
ea
SHOP
VA4-KF50-40-50-40
Four-way reducing adapter, SS, KF50/KF40/KF50/KF40
ea
SHOP
Equal 5-Way Crosses Adapter
Equal 5-Way Crosses Adapter

EQUAL 5-WAY CROSSES

Also available in KF10.

Equal 5-Way Crosses diagram
VC5-KF16
Five-way adapter, SS, KF16
ea
SHOP
VC5-KF25
Five-way adapter, SS, KF25
ea
SHOP
VC5-KF40
Five-way adapter, SS, KF40
ea
SHOP
VC5-KF50
Five-way adapter, SS, KF50
ea
SHOP
Equal 6-Way Crosses Adapter
Equal 6-Way Crosses Adapter

EQUAL 6-WAY CROSSES

Also available in KF10.

Equal 6-Way Crosses diagram
VC6-KF16
Six-way adapter, SS, KF16
ea
SHOP
VC6-KF25
Six-way adapter, SS, KF25
ea
SHOP
VC6-KF40
Six-way adapter, SS, KF40
ea
SHOP
VC6-KF50
Six-way adapter, SS, KF50
ea
SHOP
NW/KF Straight Tubes, 304 Stainess Steel
NW/KF Straight Tubes, 304 Stainess Steel

STRAIGHT STAINLESS STEEL CONNECTOR

Also know as a full nipple straight connector.
Made from SS304.
We fabricate these KF (QF) nipples (spools) for HV systems from tubing and KF flanges. The KF (QF) flange is used for through- or foreline vacuum plumbing and for simple HV chamber ports.

Special specifications can be custom made - ask.

Vacuum Connector
NW/KF Straight Tubes, 304 Stainless Steel
NW/KF Straight Tubes, 304 Stainless Steel
VCS-KF16-058
Straight connector, SS, KF16, 58mm
ea
SHOP
VCS-KF16-080
Straight connector, SS, KF16, 80mm
ea
SHOP
VCS-KF16-100
Straight connector, SS, KF16, 100mm
ea
SHOP
VCS-KF16-150
Straight connector, SS, KF16, 150mm
ea
SHOP
VCS-KF16-250
Straight connector, SS, KF16, 250mm
ea
SHOP
VCS-KF16-320
Straight connector, SS, KF16, 320mm
ea
SHOP
VCS-KF25-080
Straight connector, SS, KF25, 80mm
ea
SHOP
VCS-KF25-100
Straight connector, SS, KF25, 100mm
ea
SHOP
VCS-KF25-150
Straight connector, SS, KF25, 150mm
ea
SHOP
VCS-KF25-250
Straight connector, SS, KF25, 250mm
ea
SHOP
VCS-KF40-080
Straight connector, SS, KF40, 80mm
ea
SHOP
VCS-KF40-100
Straight connector, SS, KF40, 100mm
ea
SHOP
VCS-KF40-130
Straight connector, SS, KF40, 130mm
ea
SHOP
VCS-KF40-150
Straight connector, SS, KF40, 150mm
ea
SHOP
VCS-KF40-250
Straight connector, SS, KF40, 250mm
ea
SHOP
VCS-KF50-100
Straight connector, SS, KF50, 100mm
ea
SHOP
VCS-KF50-140
Straight connector, SS, KF50, 140mm
ea
SHOP
VCS-KF50-250
Straight connector, SS, KF50, 250mm
ea
SHOP
Reinforced vacuum & pressure tubing
Reinforced vacuum & pressure tubing
VACUUM & PRESSURE TUBING

Wire reinforced thick wall PVC pipe

Thick‐walled PVC with a steel wire spiral inside the tubing wall. The wire spiral is Stainless Steel and is embedded in PVC plastic ‐ smooth tubing inside and outside.
Use with hose adapters and hose clamps to make custom vacuum system or pressure hoses.
This tube/hose is suitable for both pressure and vacuum.

Constructed of corrosion‐resistant PVC, can be used to transport various chemicals in areas with tight turns and sharp bends. Its bend radius is approximately four times the I.D. PVC is suitable for application at temperatures from ‐12°C to 65°C.

This tubing available in the following inner diameter millimetres: 6, 9, 12, 19, 25, 38, 50.
2 week lead time on products not in stock.

Tubing is supplied in continuous length to order.


Cat. No.ID (mm)OD (mm)
VTR‐066.3511.35
VTR‐099.5315.24
VTR‐1212.718.69
VTR‐191926.11
VTR‐2525.432.76
VTR‐3838.147.09
VTR‐5050.860.80

This vacuum tubing is used in conjunction with a hose adapter and a hose clamp.

Vacuum tubing
Vacuum tubing
Wire reinforced thick wall pvc vacuum hose
VTR-06
Vacuum tubing, PVC, SS reinforced, thick wall, ID 6.35mm
20% DISCOUNT FOR 20
300mm
SHOP
VTR-09
Vacuum tubing, PVC, SS reinforced, thick wall, ID 9.53mm
20% DISCOUNT FOR 20
300mm
SHOP
VTR-12
Vacuum tubing, PVC, SS reinforced, thick wall, ID 12.70mm
20% DISCOUNT FOR 20
300mm
SHOP
VTR-19
Vacuum tubing, PVC, SS reinforced, thick wall, ID 19mm
20% DISCOUNT FOR 20
300mm
SHOP
VTR-25
Vacuum tubing, PVC, SS reinforced, thick wall, ID 25.40mm
20% DISCOUNT FOR 20
300mm
SHOP
VTR-38
Vacuum tubing, PVC, SS reinforced, thick wall, ID 38.10mm
20% DISCOUNT FOR 20
300mm
SHOP
VTR-50
Vacuum tubing, PVC, SS reinforced, thick wall, ID 50.80mm
20% DISCOUNT FOR 20
300mm
SHOP
Flexible Vacuum Pipe
Flexible Vacuum Pipe
STAINLESS STEEL VACUUM FLEXIBLE BELLOWS

KF fittings (Standard unbraided wall)

A superior alternative to rubber or reinforced plastic hoses. These durable, thin walled, flexible stainless steel hoses do not alter or crack like rubber or plastic hoses and do not collapse under vacuum, have less connection parts and therefore introduce less possible leaks in a vacuum system. NW/KF flexible metal hoses are made from 304 stainless steel and may be cleaned with solvents. Dry and clean SS is most suitable for high vacuua.

These stainless steel hoses/bellows are designed to curve but not to expand or contract in length. The 25mm bellow may be rolled up to a minimum 300mm diameter roll. Excessive flexing may lead to metal fatigue. These bellows are excellent for connecting low and high vacuum pumps to each other or to working chambers.

The space within the bellows (or vacuum hose) adds to the pumped space, but larger diameter bellows/ tubes transmit vacuua better. Keep vacuum connections as short as practicable.

DNStandard lengths (mm)
KF‐10100250300500600700100015002000
KF‐16
KF‐25
KF‐40
KF‐50

Special specifications can be custom made ‐ ask.


SPECIAL: One slightly dented bellow VBF‐KF40‐1000 for AUD68.00 ‐ ASK

Vacuum Bellow Diagram
Vacuum Bellow
SPECIAL: DENTED BELLOW
SPECIAL: DENTED BELLOW
VBF-KF16-0100
Vacuum bellow, KF16, 100mm
ea
SHOP
VBF-KF16-0250
Vacuum bellow, KF16, 250mm
ea
SHOP
VBF-KF16-0500
Vacuum bellow, KF16, 500mm
ea
SHOP
VBF-KF16-1000
Vacuum bellow, KF16, 1000mm
ea
SHOP
VBF-KF16-2000
Vacuum bellow, KF16, 2000mm
ea
SHOP
VBF-KF25-0100
Vacuum bellow, KF25, 100mm
ea
SHOP
VBF-KF25-0250
Vacuum bellow, KF25, 250mm
ea
SHOP
VBF-KF25-0300
Vacuum bellow, KF25, 300mm
ea
SHOP
VBF-KF25-0500
Vacuum bellow, KF25, 500mm
ea
SHOP
VBF-KF25-0600
Vacuum bellow, KF25, 600mm
ea
SHOP
VBF-KF25-1000
Vacuum bellow, KF25, 1000mm
ea
SHOP
VBF-KF25-1500
Vacuum bellow, KF25, 1500mm
ea
SHOP
VBF-KF25-2000
Vacuum bellow, KF25, 2000mm
ea
SHOP
VBF-KF40-0100
Vacuum bellow, KF40, 100mm
ea
SHOP
VBF-KF40-0180
Vacuum bellow, KF40, 180mm
60% DISCOUNT FOR 1
ea
SHOP
VBF-KF40-0250
Vacuum bellow, KF40, 250mm
ea
SHOP
VBF-KF40-0500
Vacuum bellow, KF40, 500mm
ea
SHOP
VBF-KF40-0500X
Vacuum bellow, KF40, 500mm - US Alternative
60% DISCOUNT FOR 1
ea
SHOP
VBF-KF40-1000
Vacuum bellow, KF40, 1000mm
ea
SHOP
VBF-KF40-1200
Vacuum bellow, KF40, 1200mm
ea
SHOP
VBF-KF40-1500
Vacuum bellow, KF40, 1500mm
ea
SHOP
VBF-KF40-2000
Vacuum bellow, KF40, 2000mm
ea
SHOP
VBF-KF40-2200
Vacuum bellow, KF40, 2200mm
ea
SHOP
VBF-KF40-3000
Vacuum bellow, KF40, 3000mm
ASK
VBF-KF40-3400
Vacuum bellow, KF40, 3400mm
ea
SHOP
VBF-KF50-0100
Vacuum bellow, KF50, 100mm
ea
SHOP
VBF-KF50-0250
Vacuum bellow, KF50, 250mm
ea
SHOP
VBF-KF50-0500
Vacuum bellow, KF50, 500mm
ea
SHOP
VBF-KF50-1000
Vacuum bellow, KF50, 1000mm
ea
SHOP
VBF-KF50-2000
Vacuum bellow, KF50, 2000mm
ea
SHOP
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