System of Measurement System of Measurement |
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Connection Style Connection Style |
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Quick Clamp |
Material Material |
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Maximum Pressure Maximum Pressure |
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Connection Type Connection Type |
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![]() | Tube |
Length Length | Show |
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Length Length | Hide |
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Type Type |
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![]() | Connector |
Shape Shape |
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![]() | Straight |
Trade Number Trade Number |
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High Vacuum Connection Type High VacuumConnection Type |
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For Tube Material For Tube Material |
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Maximum Temperature Maximum Temperature |
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Maximum Vacuum Maximum Vacuum |
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Minimum Temperature Minimum Temperature |
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Specifications Met Specifications Met |
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Sterilize With Sterilize With |
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Vacuum Rating Vacuum Rating |
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Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Instead of a gasket, these fittings have a special ring that is designed for high-vacuum applications, such as vacuum coating and heat treating, leak testing, and analyzing gases. Also known as KF, QF, and NW fittings, they are the most common type of connection in high-vacuum systems. Connect with a clamp and another quick-clamp fitting for fast, easy access to your line. To use fittings in pressure applications, use a pressure-rated ring (sold separately).
304 stainless steel fittings have very good corrosion resistance.
Note: To complete a connection, you’ll need two quick-clamp fittings, a ring, and a clamp (all sold separately).
For technical drawings and 3-D models, click on a part number.
For Tube OD | Flange OD | Trade Number | High Vacuum Connection Type | Lg. | Material | Max. Vacuum | Each | |
2" | 2.95" | 50 | ISO-KF | 5 1/2" | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 00000000 | 000000 |
Clamps (sold separately) tighten by hand. Spring-loaded clamps are also known as toggle clamps.
Rings (sold separately) consist of a stainless steel inner ring covered by a fluoroelastomer O-ring. Rings with screen have a stainless steel screen to filter out large particles. Pressure-rated rings have an aluminum outer ring to withstand extra pressure.
For Tube OD | For Flange OD | Trade Number | High Vacuum Connection Type | Inner Ring Material | Max. Vacuum | Max. Pressure | Each | |
Rings | ||||||||
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2" | 2.95" | 50 | ISO-KF | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | Not Rated | 0000000 | 000000 |
Rings with Stainless Steel Screen | ||||||||
2" | 2.95" | 50 | ISO-KF | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | Not Rated | 00000000 | 00000 |
Rings with Aluminum Outer Ring | ||||||||
2" | 2.95" | 50 | ISO-KF | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 50 psi @ 72° F | 0000000 | 00000 |
Hose (sold separately) absorbs moderate vibration
For Tube OD | Flange OD | Trade Number | High Vacuum Connection Type | Material | Max. Vacuum | Bend Radius | Flexibility | Each | |
4 3/16" Lg. | |||||||||
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2" | 2.95" | 50 | ISO-KF | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | __ | Rigid | 0000000 | 0000000 |
12" Lg. | |||||||||
2" | 2.95" | 50 | ISO-KF | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 3 1/4" | Flexible | 00000000 | 000000 |
24" Lg. | |||||||||
2" | 2.95" | 50 | ISO-KF | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 3 1/4" | Flexible | 00000000 | 000000 |
39" Lg. | |||||||||
2" | 2.95" | 50 | ISO-KF | 304 Stainless Steel | 1 × 10 -7 torr @ 72° F | 3 1/4" | Flexible | 00000000 | 000000 |
Valves (sold separately) are also known as vacuum isolation valves. They connect to a vacuum system so you can install gauges, release gases, and remove air. They operate manually and have a compact body that fits easily into tight spaces.
Actuation | For Tube OD | Flange OD | Trade Number | Max. Vacuum | Body Material | Overall Ht. | Overall Lg. | Each | |
Manual | 2" | 2 15/16" | 50 | 10 -7 torr @ 72° F | 304 Stainless Steel | 8" | 4 1/2" | 00000000 | 0000000 |