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.

Klein flange clamping rings
Klein flange clamping rings
Klein flange clamping rings

KLEIN FLANGES

Aluminium

Klein flanges with locating rings and O‐rings
Cost efficient aluminium clamp to connect standard NW/KF components. This is the most popular wing nut clamp.
Swing clamp/quick coupling with centring ring and O‐ring.


Features

  • Fastens KF flanges of corresponding size
  • Easy to assemble easy to clamp and unclamp without tools
  • Comes with stainless steel eye bolt and wing nut
  • Can be heated upto 150°C
  • Requires centring ring with Elastomer O‐Ring to create seal
Cat. No.SizeLocating ring materialO‐ring materialHeight [A] (mm)Width [B] (mm)Internal Diameter [D] (mm)
VKF‐16DN 16 ISO‐KFAluminiumViton456122
VKF‐25DN 25 ISO‐KFAluminiumViton557232
VKF‐40DN 40 ISO‐KFAluminiumViton709047
VKF‐50DN 50 ISO‐KFAluminiumViton9512363

The flange is made from aluminium with a SS butterfly nut and thread.
KF10 components are available as well ‐ ask.

VKF-16
Klein flange, Al, locating ring and O-ring, KF16
20% DISCOUNT FOR 10
AUD23.00
ea
ADD TO CART 
VKF-25
Klein flange, Al, locating ring and O-ring, KF25
20% DISCOUNT FOR 10
AUD29.00
ea
ADD TO CART 
VKF-40
Klein flange, Al, locating ring and O-ring, KF40
20% DISCOUNT FOR 10
AUD28.00
ea
ADD TO CART 
VKF-50
Klein flange, Al, locating ring and O-ring, KF50
20% DISCOUNT FOR 10
AUD42.00
ea
ADD TO CART 
Stainless steel KF wing nut clamp
Stainless steel KF wing nut clamp

NW/KF WING NUT CLAMPS

Forged 304 stainless steel

Forged 304 stainless steel clamps are suitable for cleanroom environments.

A stainless steel locating ring and a viton O-ring are provided with each klein flange.


Please note that the KF16 quick coupling clamp can also be used with KF10 components as both KF10 and KF16 fittings have the same external diameter.

VKF-SS-KF16
Klein flange, SS, with SS locating ring and Viton O-ring, KF16
10% DISCOUNT FOR 5
AUD29.00
ea
ADD TO CART 
VKF-SS-KF25
Klein flange, SS, with SS locating ring and Viton O-ring, KF25
10% DISCOUNT FOR 5
AUD35.00
ea
ADD TO CART 
VKF-SS-KF40
Klein flange, SS, with SS locating ring and Viton O-ring, KF40
10% DISCOUNT FOR 5
AUD38.00
ea
ADD TO CART 
VKF-SS-KF50
Klein flange, SS, with SS locating ring and Viton O-ring, KF50
10% DISCOUNT FOR 5
AUD45.00
ea
ADD TO CART 
Bulkhead Clamp
Bulkhead Clamp

BULKHEAD CLAMP

Aluminium

These Aluminium Bulkhead Clamps are commonly used to build foreline vacuum plumbing and process systems. Adapts to a baseplate or fixed flange. Uses standard KF seal assembly. 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. They are made of Aluminium.

Cat. No.SizeDiameter [A]Width [B]Bolt Hole SizeNo of Bolt Holes
VBH-KF16KF1650.809.204.306
VBH-KF16-530KF1650.809.205.306
VBH-KF25KF2560.309.905.306
VBH-KF40KF4074.609.305.306
VBH-KF50KF5095.2010.305.308
VBH-KF16
Bulkhead clamp, Al, KF16
10% DISCOUNT FOR 5
ea
QUOTE
VBH-KF25
Bulkhead clamp, Al, KF25
10% DISCOUNT FOR 5
ea
QUOTE
VBH-KF40
Bulkhead clamp, Al, KF40
10% DISCOUNT FOR 5
ea
QUOTE
VBH-KF50
Bulkhead clamp, Al, KF50
10% DISCOUNT FOR 5
ea
QUOTE
Locating Ring / Centring ring
Locating Ring / Centring ring
Centring Ring Diagram
LOCATING RINGS WITH O-RING

Centring ring with O-ring gasket

A circumferential clamp and a centring ring with an o-ring form the vacuum seal between the connecting flanges.
Made from Stainless Steel (SS304) and Viton®.
Also available in ISO - ask.

Cat. No
Locating ring
O-ring
MaterialExternal diameter (mm)Lip diameter (mm)Internal diameter (mm)Width (mm)Internal diameter (mm)External diameter (mm)Width (mm)
VLR-10SS171210816255
VLR-16SS191716819285
VLR-25SS302625828385
VLR-40SS444140842535
VLR-50SS565250856655

Measurements are approximate


For Conflat copper gaskets, see Page V9.

VLRV-KF10
Locating ring, SS, with Viton O-ring, KF10
20% DISCOUNT FOR 3
AUD12.00
ea
ADD TO CART 
VLRV-KF16
Locating ring, SS, with Viton O-ring, KF16
10% DISCOUNT FOR 4
AUD26.00
pk/5
ADD TO CART 
VLRV-KF25
Locating ring, SS, with Viton O-ring, KF25
10% DISCOUNT FOR 4
AUD29.00
pk/5
ADD TO CART 
VLRV-KF25X
Locating ring, SS, with Viton O-ring, KF25 (US made alternative)
75% DISCOUNT FOR 1
AUD184.50
ea
ADD TO CART 
VLRV-KF40
Locating ring, SS, with Viton O-ring, KF40
10% DISCOUNT FOR 4
AUD36.00
pk/5
ADD TO CART 
VLRV-KF50
Locating ring, SS, with Viton O-ring, KF50
20% DISCOUNT FOR 10
AUD17.00
ea
ADD TO CART 
Centring Rings with Mesh
Centring Rings with Mesh
Centring Rings with mesh Diagram

CENTRING RINGS WITH MESH SCREEN AND O-RING

NW/KF Centring rings, 304 stainless steel with 60 mesh SS screen and Viton O-ring

Used on pumps and other applications where components need to be shielded from small particles entering.
Centring Rings with screen vacuum fittings follow ISO-KF standards. These centring rings with screen mesh are useful in many situations in which a vacuum system or instrument needs to be protected from contamination by particulate generated from outside the system or from within. They are commonly used to build foreline vacuum plumbing and process systems.
Hole diameter is 1.3mm

VLRM-KF16
Locating ring, SS, Viton O-ring, 60 mesh SS screen, KF16
10% DISCOUNT FOR 5
AUD19.00
ea
ADD TO CART 
VLRM-KF40
Locating ring, SS, Viton O-ring, 60 mesh SS screen, KF40
10% DISCOUNT FOR 5
AUD22.00
ea
ADD TO CART 
VLRM-KF50
Locating ring, SS, Viton O-ring, 60 mesh SS screen, KF50
10% DISCOUNT FOR 5
AUD25.00
ea
ADD TO CART 
VLRM30-KF25
Locating ring, SS, with viton O-ring, 30 mesh SS screen, KF25
10% DISCOUNT FOR 5
AUD103.00
pk/5
ADD TO CART 
SS Centring Ring
SS Centring Ring

NW/KF CENTRING RINGS

304 Stainless steel without O-ring

SS Centring ring diagram
SS Centring ring diagram
VLR-KF16
Locating rings, SS, KF16
20% DISCOUNT FOR 4
AUD24.00
pk/5
ADD TO CART 
VLR-KF40
Locating rings, SS, KF40
20% DISCOUNT FOR 1
AUD2822.40
pk/5
ADD TO CART 
VLR-KF50
Locating rings, SS, KF50
60% DISCOUNT FOR 1
AUD3815.20
pk/5
ADD TO CART 
O-rings for locating rings in a vacuum system
O-rings for locating rings in a vacuum system

O-Rings for NW/KF Centring Rings

In Viton®, silicone and Buna-N

Depending on pressure on the O-ring, environment and service temperature, O-rings need to be renewed to ensure leak-free seals. Use the O-rings to service the NW/KF connections on your vacuum systems.

Viton® is well known for its excellent resistance to heat and to aggressive fuels and chemicals. Used for high vacuum applications, temperature range from -54°C to 250°C. Viton® is a registered trademark of DuPont Performance Elastomers.

Silicone is a popular O-Ring which is commonly red in colour and is used for chemical applications. Made of elastomeric materials made from silicone, oxygen, hydrogen and carbon. Excellent material for static service at extreme (hot or cold) temperatures. Outstanding flex and fatigue life. Very good for ozone and UV radiation as well as for resistance to fungal and biological attack. Limitations: Avoid chlorinated solvents, aliphatic and aromatic hydrocarbons and petroleum oils. Silicones are generally very permeable to gases and have poor physical strength and abrasion resistance. Temperature Range from -85°C to 232°C. LPCVD/Oxidation, Dry Etch, Resist Stripping.

Buna-N, also known as Standard Nitrile, is used for non-critical and low vacuum applications, temperature range from -54°C to 150°C. Excellent resistance to petroleum-based oils and fuels, water and alcohols. Nitrile also has good resistance to acids and bases, except those with a strong oxidising effect. Limitations: Avoid highly polar solvents (Acetone, MEK, etc.) and direct exposure to ozone and sunlight.


SizeID (mm) [B]OD (mm)Thickness (mm) [A]
KF1618.5295
KF2528.5375
KF4041.5505
KF5055655
O-ring Materials Comparison Table
PropertyBuna-NViton®Silicone
Common NameNitrileFluor ElastomereSilicone Rubber
Tear ResistanceGoodGoodGood
Abrasive ResistanceGoodGoodPoor
Ozone ResistancePoorExcellentExcellent
Weather ResistanceFairExcellentExcellent
Heat ResistanceFairExcellentExcellent
Chemical ResistanceFairExcellentGood
Oil ResistancePoorExcellentPoor
Acid Resistance
Fair
Excellent
Good
Alkali Resistance
Good
Good
Fair
Steam Resistance
Fair
Fair
Poor
Minimum Usable Temperature
-54°C
-54°C
-85°C
Maximum Usable Temperature
150°C
260°C
232°C
Color
Black
Black / Brown
Red
Impermeability
Fair
Good
Poor
Tensile Strength
Good
Good
Poor
Cost
Low
High
Medium
O-rings for locating rings
Viton O-rings for locating rings
Silicone O-rings for locating rings
Nitrile O-rings for locating rings
VOR-B-KF16
O-Rings, Nitrile, for NW/KF centring rings, KF16
10% DISCOUNT FOR 5
AUD13.00
pk/10
ADD TO CART 
VOR-B-KF25
O-Rings, Nitrile, for NW/KF centring rings, KF25
10% DISCOUNT FOR 5
AUD14.00
pk/10
ADD TO CART 
VOR-B-KF40
O-Rings, Nitrile, for NW/KF centring rings, KF40
10% DISCOUNT FOR 5
AUD16.00
pk/10
BACKORDER 
VOR-B-KF50
O-Rings, Nitrile, for NW/KF centring rings, KF50
10% DISCOUNT FOR 5
AUD18.00
pk/10
ADD TO CART 
VOR-S-KF16
O-Rings, Silicone, for NW/KF centring rings, KF16
10% DISCOUNT FOR 5
AUD15.00
pk/10
ADD TO CART 
VOR-S-KF25
O-Rings, Silicone, for NW/KF centring rings, KF25
10% DISCOUNT FOR 5
AUD16.00
pk/10
ADD TO CART 
VOR-S-KF40
O-Rings, Silicone, for NW/KF centring rings, KF40
10% DISCOUNT FOR 5
AUD20.00
pk/10
ADD TO CART 
VOR-S-KF50
O-Rings, Silicone, for NW/KF centring rings, KF50
10% DISCOUNT FOR 5
AUD22.00
pk/10
ADD TO CART 
VOR-V-KF16
O-Rings, Viton, for NW/KF centring rings, KF16
10% DISCOUNT FOR 4
AUD16.00
pk/5
ADD TO CART 
VOR-V-KF25
O-Rings, Viton, for NW/KF centring rings, KF25
10% DISCOUNT FOR 4
AUD19.00
pk/5
BACKORDER 
VOR-V-KF25X
O-Rings, Viton, for NW/KF centring rings, KF25 - USA alternative
75% DISCOUNT FOR 1
AUD246.00
pk/5
ADD TO CART 
VOR-V-KF40
O-Rings, Viton, for NW/KF centring rings, KF40
10% DISCOUNT FOR 5
AUD18.00
pk/5
BACKORDER 
VOR-V-KF50
O-Rings, Viton, for NW/KF centring rings, KF50
10% DISCOUNT FOR 5
AUD24.00
pk/5
ADD TO CART 
Adaptive centring rings
Adaptive centring rings

REDUCING LOCATING RING WITH O-RING

304 Stainless steel with Viton O-ring

These adapter rings are used when less common (older) NW/KF 10, NW/KF 20 and NW/KF 32 flanges need to be connected to the standard NW/KF parts.


Cat. No.
A
B
C
VLRR-KF16-10
17
12
10
VLRR-KF25-20
26
22
20
VLRR-KF40-32
41
34
32
Adaptive Centring Rings diagram
Adaptive Centring Rings diagram
Reducing centre ring with O-ring
Reducing centre ring with O-ring
VLRR-KF16-10
Locating ring, Al, with Viton O-ring, reducing KF16 to KF10
AUD17.00
ea
BACKORDER 
VLRR-KF25-20
Locating ring, Al, with Viton O-ring, reducing KF25 to KF20
AUD17.00
ea
BACKORDER 
VLRR-KF40-32
Locating ring, Al, with Viton O-ring, reducing KF40 to KF32
AUD17.00
ea
BACKORDER 
NW blanking plates
VBP-16, 25, 40 and 50

BLANKING FLANGES

These vacuum blanking plates, also known as end-plates, blank caps, blind flanges and blanking plugs, are made from 304 Stainless Steel (SS304).
Used to blank off vacuum ports not being used. Can also be used for troubleshooting by blanking off sections to determine possible leaks.

KF flanges are equal to the flanges known as KF (or Klein Flansche) by the International Standards Organization.

  • KF fittings are used for through or foreline vacuum plumbing and simple HV (10-8 Torr) chambers
  • Elastomeric o-ring limits the connection's temperature range and ultimate vacuum
  • 304 stainless steel fittings work in adverse temperatures and corrosive conditions
  • Aluminium or brass fittings work in more general applications
Cat. No.Diameter [B] (mm)Width [A] (mm)
VBP-10306
VBP-16306
VBP-25406
VBP-40556
VBP-50756

Also available in ISO 160, ISO 200, ISO 250, ISO 400 - ask.
Conflat blanking flanges

VBP-10
Blanking plate, KF10
5% DISCOUNT FOR 1
AUD1615.20
ea
ADD TO CART 
VBP-16
Blanking plate, KF16
10% DISCOUNT FOR 5
AUD16.00
ea
BACKORDER 
VBP-25
Blanking plate, KF25
10% DISCOUNT FOR 5
AUD17.00
ea
ADD TO CART 
VBP-40
Blanking plate, KF40
10% DISCOUNT FOR 5
AUD21.00
ea
ADD TO CART 
VBP-50
Blanking plate, KF50
10% DISCOUNT FOR 5
AUD37.00
ea
ADD TO CART 
Unbored stub flanges
Unbored stub flanges
NW/KF STUB FLANGES IN 304 STAINLESS STEEL, UNBORED

Used to blank off ports not being used. Can be used to modify for specific applications. The stub offers extra material to modify and connect non-standard vacuum connections.

Unbored Stub Flanges
VSU-SS-KF16
Stub flange, unbored, SS, KF16
AUD34.00
ea
ADD TO CART 
VSU-SS-KF25
Stub flange, unbored, SS, KF25
AUD24.00
ea
BACKORDER 
VSU-SS-KF40
Stub flange, unbored, SS, KF40
AUD22.00
ea
ADD TO CART 
VSU-SS-KF50
Stub flange, unbored, SS, KF50
AUD47.00
ea
BACKORDER 
Vacuum Smoke Mouth Joint
Smoke Mouth Joint

KLEIN FLANGE TO HOSE ADAPTER

These joints, also called a nozzle adapters, smoke mouth joint or hose pipe adapters/hose connector adapters, connects a hose to a vacuum system using a KF clamp, often used with a hose clamp. Made from SS, these hose adapters are ribbed to give a excellent seal.
See our thick wall PVC vacuum tubing reinforced with wire and our hose clamps.

Hose size (mm)Length [A] (mm)Internal diameter [B] (mm)External diameter [C] (mm)KF external diameter (mm)
KF16KF25KF40KF50
6  6.35 (1/4")30405575
9  9.53 (3/8")
12406.9512.15 (or 12.70 - 1/2" - ask)
194014.5519 (3/4")
254019.7225.40 (1")
38  38.10 (1-1/2")
50  50.80 (2")
VSM-16-06
Hose adapter, KF16, for 6mm hose
10% DISCOUNT FOR 4
AUD23.00
ea
ADD TO CART 
VSM-16-08
Hose adapter, KF16, for 8mm hose
10% DISCOUNT FOR 4
AUD29.00
ea
BACKORDER 
VSM-16-12
Hose adapter, KF16, for 12mm hose
10% DISCOUNT FOR 4
AUD23.00
ea
BACKORDER 
VSM-16-19
Hose adapter, KF16, for 19mm hose
10% DISCOUNT FOR 4
AUD31.00
ea
ADD TO CART 
VSM-25-06
Hose adapter, KF25, for 6mm hose
10% DISCOUNT FOR 4
AUD24.00
ea
BACKORDER 
VSM-25-08
Hose adapter, KF25, for 8mm hose
10% DISCOUNT FOR 4
AUD29.00
ea
ADD TO CART 
VSM-25-12
Hose adapter, KF25, for 12mm hose
10% DISCOUNT FOR 4
AUD31.00
ea
BACKORDER 
VSM-25-19
Hose adapter, KF25, for 19mm hose
10% DISCOUNT FOR 4
AUD31.00
ea
ADD TO CART 
VSM-25-25
Hose adapter, KF25, for 25mm hose
10% DISCOUNT FOR 4
AUD26.00
ea
ADD TO CART 
VSM-40-06
Hose adapter, KF40, for 6mm hose
10% DISCOUNT FOR 4
AUD38.00
ea
BACKORDER 
VSM-40-09
Hose adapter, KF40, for 9mm hose
10% DISCOUNT FOR 4
AUD38.00
ea
BACKORDER 
VSM-40-12
Hose adapter, KF40, for 12mm hose
10% DISCOUNT FOR 4
AUD38.00
ea
ADD TO CART 
VSM-40-19
Hose adapter, KF40, for 19mm hose
10% DISCOUNT FOR 4
AUD38.00
ea
BACKORDER 
VSM-40-25
Hose adapter, KF40, for 25mm hose
10% DISCOUNT FOR 4
AUD38.00
ea
ADD TO CART 
VSM-40-38
Hose adapter, KF40, for 38mm hose
15% DISCOUNT FOR 4
AUD40.00
ea
BACKORDER 
VSM-50-06
Hose adapter, KF50, for 6mm hose
15% DISCOUNT FOR 4
AUD63.00
ea
BACKORDER 
VSM-50-09
Hose adapter, KF50, for 9mm hose
15% DISCOUNT FOR 4
AUD63.00
ea
BACKORDER 
VSM-50-12
Hose adapter, KF50, for 12mm hose
10% DISCOUNT FOR 4
AUD64.00
ea
ADD TO CART 
VSM-50-19
Hose adapter, KF50, for 19mm hose
15% DISCOUNT FOR 4
AUD51.00
ea
BACKORDER 
VSM-50-25
Hose adapter, KF50, for 25mm hose
15% DISCOUNT FOR 4
AUD52.00
ea
BACKORDER 
VSM-50-38
Hose adapter, KF50, for 38mm hose
15% DISCOUNT FOR 4
AUD52.00
ea
ADD TO CART 
VSM-50-50
Hose adapter, KF50, for 50mm hose
15% DISCOUNT FOR 4
AUD53.00
ea
BACKORDER 
Weld Flange
Weld Flange
Weld Flange dimensions

WELD FLANGE

These weld flanges have several names flat flanges, terminal pad, half nipple, tubulations, and flange coupling.
As the name implies the primary purpose is for welding a Klein flange to metal tubing or to glue to hard plastic tubing. Weld flanges can be used as KF to hose adapters. Secure the vacuum tubing with a SS hose clamp.
They are made from SS304 and machined from solid bar without welds.

Special specifications can be custom made ‐ ask.

Conflat weld flange

VTP-16-12
Weld flange, KF16, 12.7mm
20% DISCOUNT FOR 10
AUD27.00
ea
BACKORDER 
VTP-16-25
Weld flange, KF16, 25mm
20% DISCOUNT FOR 10
AUD29.00
ea
BACKORDER 
VTP-16-50
Weld flange, KF16, 50mm
20% DISCOUNT FOR 10
AUD30.00
ea
ADD TO CART 
VTP-16-70
Weld flange, KF16, 70mm
20% DISCOUNT FOR 10
AUD38.00
ea
BACKORDER 
VTP-25-12
Weld flange, KF25, 12.7mm
20% DISCOUNT FOR 10
AUD30.00
ea
BACKORDER 
VTP-25-25
Weld flange, KF25, 25mm
20% DISCOUNT FOR 10
AUD30.00
ea
BACKORDER 
VTP-25-50
Weld flange, KF25, 50mm
20% DISCOUNT FOR 10
AUD35.00
ea
BACKORDER 
VTP-25-70
Weld flange, KF25, 70mm
20% DISCOUNT FOR 10
AUD38.00
ea
BACKORDER 
VTP-40-12
Weld flange, KF40, 12.7mm
20% DISCOUNT FOR 10
AUD34.00
ea
BACKORDER 
VTP-40-25
Weld flange, KF40, 25mm
20% DISCOUNT FOR 10
AUD40.00
ea
BACKORDER 
VTP-40-40
Weld flange, KF40, 40mm
20% DISCOUNT FOR 10
AUD37.00
ea
ADD TO CART 
VTP-40-70
Weld flange, KF40, 70mm
20% DISCOUNT FOR 10
AUD50.00
ea
BACKORDER 
VTP-40-80
Weld flange, KF40, 80mm
20% DISCOUNT FOR 10
AUD70.00
BACKORDER 
VTP-50-12
Weld flange, KF50, 12.7mm
20% DISCOUNT FOR 10
AUD38.00
ea
BACKORDER 
VTP-50-25
Weld flange, KF50, 25mm
20% DISCOUNT FOR 10
AUD46.00
ea
BACKORDER 
VTP-50-50
Weld flange, KF50, 50mm
20% DISCOUNT FOR 10
AUD50.00
ea
BACKORDER 
VTP-50-70
Weld flange, KF50, 70mm
20% DISCOUNT FOR 10
AUD74.00
ea
BACKORDER 
Vacuum adapter flange
Vacuum adapter flange
Vacuum KF reducing connector
Vacuum KF reducing connector
REDUCING ADAPTER

KF converter

This adapter converts the KF size.
Made from SS304.

Cat. No.DN1DN2Length (mm)Internal diameter (mm)
VAR-25-16KF-25KF-164016
VAR-40-16KF-40KF-164016
VAR-40-25KF-40KF-254025
VAR-50-16KF-50KF-164016
VAR-50-25KF-50KF-254025
VAR-50-40KF-50KF-404040
Vacuum adapter flange diagram
Vacuum adapter flange diagram
VAR-25-16
Reducing adapter, SS, KF25 to KF16
20% DISCOUNT FOR 10
ea
ASK
VAR-40-16
Reducing adapter, SS, KF40 to KF16
20% DISCOUNT FOR 1
AUD4636.80
ea
ADD TO CART 
VAR-40-25
Reducing adapter, SS, KF40 to KF25
20% DISCOUNT FOR 10
AUD58.00
ea
ADD TO CART 
VAR-50-16
Reducing adapter, SS, KF50 to KF16
20% DISCOUNT FOR 1
AUD6854.40
ea
ADD TO CART 
VAR-50-25
Reducing adapter, SS, KF50 to KF25
20% DISCOUNT FOR 1
AUD7257.60
ea
ADD TO CART 
VAR-50-40
Reducing adapter, SS, KF50 to KF40
20% DISCOUNT FOR 1
AUD7156.80
ea
ADD TO CART 
Reducing tapered vacuum connector

COMPACT CONICAL REDUCERS

Tapered reducing adapter made from SS304.

Cat. No.SizeLarger external diameter (mm)Smaller external diameter (mm)Length (mm)
VAT-25-16NW25/16KF403040
VAT-40-16NW40/16KF553028
VAT-40-25NW40/25KF554040
VAT-50-16NW50/16KF753028
VAT-50-25NW50/25KF754028
VAT-50-40NW50/40KF755540
KF/KF Reduction Swing Clamp, REDUCING TAPERED VACUUM ADAPTERS
NW/KF Compact Conical Reducers
VAT-25-16
Conical reducing adapter, SS, KF25 to KF16
20% DISCOUNT FOR 10
AUD35.00
ea
BACKORDER 
VAT-40-16
Conical reducing adapter, SS, KF40 to KF16
20% DISCOUNT FOR 10
AUD49.00
ea
ADD TO CART 
VAT-40-25
Conical reducing adapter, SS, KF40 to KF25
20% DISCOUNT FOR 10
AUD49.00
ea
ADD TO CART 
VAT-50-16
Conical reducing adapter, SS, KF50 to KF16
20% DISCOUNT FOR 10
AUD59.00
ea
BACKORDER 
VAT-50-25
Conical reducing adapter, SS, KF50 to KF25
20% DISCOUNT FOR 10
AUD59.00
ea
BACKORDER 
VAT-50-40
Conical reducing adapter, SS, KF50 to KF40
20% DISCOUNT FOR 10
AUD63.00
ea
ADD TO CART 
NW/KF Viewports
NW/KF Viewports
NW/KF VIEWPORTS WITH 7056 GLASS WINDOW

NW/KF 25, Style A Viewport (left) and NW/KF 40, Style B Viewport (right)
The NW/KF Viewports consist of a one piece assembly. The viewport assembly replaces a blanking plate and uses a standard NW/KF Centring Assembly and Clamp for sealing (not included). The window size for NW16 and NW25 is 16mm (0.62"). For NW40 and NW50, the window has a diameter of 38mm (1.51"). The body is made of stainless steel, the window is made of 7056 borosilicate glass; see transmission curve below. Useful for observing inside vacuum lines or chambers. Temperature range ‐20°C to 200°C (‐4°F to 392°F). Viton seal. Vacuum range down to 1x10‐9 Torr.

VVP‐KF16‐B Viewport with 7056 glass, KF16, style B, A=16mm, B=10mm

VVP‐KF25‐A Viewport with 7056 glass, KF25, style A, A=16mm, B=10mm

VVP‐KF40‐B Viewport with 7056 glass, KF40, style B, A=38mm, B=14mm

VVP‐KF50‐A Viewport with 7056 glass, KF50, style A, A=38mm, B=14mm

NW Viewport with glass window style A
Style A
NW Viewport with glass window style B
Style B
Light transmission curve for glass viewports
Glass Transmission Curve. No. 7056 Borosilicate glass, 1mm thick reflection losses included.
VVP-KF16-B
Viewport with 7056 glass, KF16, style B, A=16mm, B=10mm
AUD300.00
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VVP-KF25-A
Viewport with 7056 glass, KF25, style A, A=16mm, B=10mm
AUD300.00
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VVP-KF40-B
Viewport with 7056 glass, KF40, style B, A=38mm, B=14mm
AUD329.00
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VVP-KF50-A
Viewport with 7056 glass, KF50, style A, A=38mm, B=14mm
AUD368.00
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NW/KF High Vacuum Electrical Feedthrough
NW-KF Vacuum Feedthrough for electrical diagram

HIGH VACUUM ELECTRICAL FEEDTHROUGHS

NW/KF

The NW/KF Electrical Feedthrough is a universal type feedthrough, which can be used either as high voltage or instrumentation feedthrough for devices in vacuum. The NW/KF Electrical Feedthrough has 4 wires and each wire is rated to a maximum of 1000V and 1A in vacuum. The wires are colour coded; white, black, red and green and have no connectors. The feedthrough is based on an aluminium bored stub and available in NW/KF 16, ‐25, ‐40 and ‐50.

Flange materialAluminium
Flange sizesNW/KF 16, ‐25, 40 and ‐50
Maximum voltage1000V
Maximum current in vacuum1A
Vacuum ratingUp to 10‐6 mbar (10‐6 Torr)
Number of wires4; white, black, red and green
Wire gauge (AWG) / Number of strands24 / 7
Wire insulationPTFE
Wire length8"
Operating temperature‐20°C to 125°C
ApplicationsHigh voltage or instrumentation

CF feedthroughs available ‐ ask.

VEF‐KF16 Electrical feedthrough, 4 wires, Aluminium/PTFE, KF16, A=19mm, B=27mm

VEF‐KF25 Electrical feedthrough, 4 wires, Aluminium/PTFE, KF25, A=25mm, B=27mm

VEF‐KF40 Electrical feedthrough, 4 wires, Aluminium/PTFE, KF40, A=38mm, B=33mm

VEF‐KF50 Electrical feedthrough, 4 wires, Aluminium/PTFE, KF50, A=51mm, B=33mm

VEF-KF16
Electrical feedthrough, 4 wires, Aluminium/PTFE, KF16, A=19mm, B=27mm
AUD268.00
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VEF-KF25
Electrical feedthrough, 4 wires, Aluminium/PTFE, KF25, A=25mm, B=27mm
AUD270.00
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VEF-KF40
Electrical feedthrough, 4 wires, Aluminium/PTFE, KF40, A=38mm, B=33mm
AUD302.00
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VEF-KF50
Electrical feedthrough, 4 wires, Aluminium/PTFE, KF50, A=51mm, B=33mm
AUD297.00
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Gauges above shown with NW/KF16 and 25
Gauges above shown with NW/KF16 and 25
KW/KF QUICK VACUUM TEST GAUGE

DIAL TYPE

The NW/KF quick vacuum test gauge is mounted on a standard NW/KF flange and can be connected to any standard vacuum line of pump with NW/KF connection to quickly test the vacuum level. The gauge does not require any electrical connections and is intended as an indicator. The gauge has a dual scale from 0‐30 inches Hg and 0‐100kPa. Easy to read 50mm dial with steel housing and polycarbonate lens. The gauge is mounted on a stainless NW/KF adapter. A quick and cost‐effective, dial type, test vacuum gauge. Available in NW/KF16, NW/KF25, NW/KF40 and NW/KF50.


NW/KF adapters with 1/8" female NPT thread

VGT‐10 Quick vacuum test gauge, height 73mm

VGT‐16 Quick vacuum test gauge, KF10, height 73mm

VGT‐25 Quick vacuum test gauge, KF25, height 88mm

VGT‐40 Quick vacuum test gauge, KF40, height 95mm

VGT‐50 Quick vacuum test gauge, KF50, height 95mm

VGT-10
Quick vacuum test gauge, height 73mm
AUD95.00
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VGT-16
Quick vacuum test gauge, KF10, height 73mm
AUD138.00
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VGT-25
Quick vacuum test gauge, KF25, height 88mm
AUD147.00
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VGT-40
Quick vacuum test gauge, KF40, height 95mm
AUD161.00
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VGT-50
Quick vacuum test gauge, KF50, height 95mm
AUD176.00
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P-100 Pirani Digital Gauge
Pirani Digital Gauge NPT Thread
Pirani Digital Gauge KF16
Pirani Digital Gauge KF25
PIRANI DIGITAL GAUGE

WITH INTEGRAL SENSOR AND DISPLAY

This compact vacuum measuring instrument offers the precision and high resolution of digital electronics with display and measuring device all in one small box. This extremely rugged Pirani Vacuum Gauge is constructed with a solid, noble, inert metal that maintains its calibration over long periods. The vacuum gauge does not contain gold and is compatible with mechanical, oil and mercury pumps. Operates at relatively low operating temperature and includes temperature compensation network to enhance stability.


The vacuum connection on the P-100 Compact Integral Sensor Pirani Gauge is 1/8" NPT male thread and a selection of NW/KF adapters is available for easy connection to existing vacuum system. Due to its small size, it can be easily integrated in custom vacuum systems. The P-100 Pirani Vacuum Gauge can be easily transported and is ideal for service and maintenance applications to check performance of vacuum pumps, backing lines, airlocks and vacuum chambers.


NW/KF adapters with 1/8" female NPT thread


Specifications of the P-100 Pirani Gauge with integral sensor and display

Pressure range0.001 to 1.5 mbar
CalibrationAir or Nitrogen
Response time0.3 sec time constant
Temperature effects< .45% between 0 to 50°C
AdjustmentsZero and span
Analog Output0 to 1.5 Volts into a 2000 Ohm load or higher
Maximum positive pressure3.5 bar (50 PSIG)
Vacuum connection1/8" NPT male thread
Display4 digit LCD, 10mm high
Power supplyExternal adapter, 90-240V, 50/60Hz
Dimensions63 x 63 x 32mm
Weight170 grams
VGP100-10
P-100 Pirani gauge with integral sensor and display, 1/8" NPT thread
AUD586.00
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VGP100-16
P-100 Pirani gauge with integral sensor and display, KF16 flange
AUD618.00
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VGP100-25
P-100 Pirani gauge with integral sensor and display, KF25 flange
AUD623.00
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VGP100-40
P-100 Pirani gauge with integral sensor and display, KF40 flange
AUD646.00
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VGP100-50
P-100 Pirani gauge with integral sensor and display, KF50 flange
AUD661.00
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Bullseye Precision Gauge
Bulseye display
BULLSEYE PRECISION DIGITAL VACUUM GAUGE

The Bullseye Precision Vacuum Gauge is a rugged and portable digital vacuum gauge. Its digital display features visual graphing, vacuum analytics, 11 different numerical units or graphics display for quick determination of vacuum level. You can put it virtual anywhere with its integrated kickstand or strong magnet. Ideal for service engineers in the field or on the road, testing vacuum performance of pumping systems, checking vacuum levels or pinpointing problems in vacuum lines. Display has backlit on/off selection to enhance visibility if needed. Easy to set up with only three buttons; see program select menu.


With a choice of 11 different vacuum units it is one of the most versatile vacuum gauges available:

Specifications
Range1-800,000 microns (1.3 x 10-3 - 1066 mbar)
UnitsTorr, millitor, microns, inches of Hg, mm Hg, PSI Inches of water, mbar, bar, Pa, kPa
SensorThermocouple
Vacuum connection1/8" NPT male
Accuracy 1-2000 microns± 17%
Accuracy 2001-800,000 microns± 30%
DisplayDigital, LCD
Cable length to vacuum sensor2.1m
Power4 x AA Alkaline
Battery lifeUp to 70 hrs
Dimensions158 x 95 x 33mm
Weight900 grams
VGB-10
Bullseye precision vacuum gauge, 1/8" NPT connection
AUD704.00
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VGB-16
Bullseye precision vacuum gauge, KF16 flange
AUD727.00
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VGB-25
Bullseye precision vacuum gauge, KF25 flange
AUD736.00
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VGB-40
Bullseye precision vacuum gauge, KF40 flange
AUD756.00
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VGB-50
Bullseye precision vacuum gauge, KF50 flange
AUD770.00
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