Shape Shape |
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![]() | Tee |
Connection Style Connection Style | Show |
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Flanged |
Connection Style Connection Style | Hide |
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Threaded |
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Socket Connect |
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Butt Weld |
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Barbed |
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Push to Connect |
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Yor-Lok |
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Compression |
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Quick Clamp |
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Flared |
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Clamp On |
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Flanged |
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Quick Turn |
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Claw Clamp |
For Use With For Use With |
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Material Material |
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Type Type |
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![]() | Connector |
System of Measurement System of Measurement |
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Maximum Pressure Maximum Pressure |
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For Pipe Schedule For Pipe Schedule |
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![]() | 40 |
Specifications Met Specifications Met |
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For Pipe Material For Pipe Material |
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Fabrication Fabrication |
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Maximum Steam Pressure Maximum Steam Pressure |
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For Tube Material For Tube Material |
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High Vacuum Connection Type High VacuumConnection Type |
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Maximum Temperature Maximum Temperature |
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Appearance Appearance |
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Maximum Vacuum Maximum Vacuum |
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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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Bolt the flanged end of these fittings to another same-size flange, pump, or valve with a gasket (sold separately) to create an access point in a pipe line. Raised-surface flanged ends only mate with other raised-surface flanged ends, and flat-surface flanged ends only mate with other flat-surface flanged ends. Use in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
Bolt Hole | ||||||||||
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Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Material | Each | |
2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 125 psi @ 350° F | Iron | 0000000 | 0000000 |
2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 125 psi @ 350° F | Iron | 0000000 | 000000 |
3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 125 psi @ 350° F | Iron | 0000000 | 000000 |
4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 125 psi @ 350° F | Iron | 0000000 | 000000 |
Create access points in ultra-high-vacuum lines or chambers by bolting two same-size flanges together with a copper gasket (sold separately) between them. The flanges’ sharp edges dig into the copper gasket and form an extremely tight seal, which means they handle higher vacuum pressures than other high-vacuum fittings with rubber gaskets. Also known as CF, Conflat, and UHV fittings, use them in vacuum coating, heat treating, and drying applications, as well as for leak testing and analyzing gases. They’re stainless steel so they resist rusting.
Fittings with a rotating flange turn so you can easily match up the bolt holes with another flange that may be misaligned.
Bolt kits are required to make a complete connection.
Bolt Hole | |||||||||||||
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For Tube OD | Flange OD | Trade Number | High Vacuum Connection Type | Bolt Circle Dia. | Dia. | No. of | Bolts Included | No. of Bolt Kits Required | Max. Vacuum | Material | Appearance | Each | |
Fixed × Rotating × Rotating | |||||||||||||
3/4" | 1 21/64" | 16 | CF | 1 1/16" | 11/64" | 6 | No | 3 | 1 × 10 -13 torr @72° F | 304 Stainless Steel | Polished | 0000000 | 0000000 |
1 1/2" | 2 3/4" | 40 | CF | 2 5/16" | 17/64" | 6 | No | 3 | 1 × 10 -13 torr @72° F | 304 Stainless Steel | Polished | 0000000 | 000000 |
2 1/2" | 4 1/2" | 63 | CF | 3 5/8" | 21/64" | 8 | No | 3 | 1 × 10 -13 torr @72° F | 304 Stainless Steel | Polished | 0000000 | 000000 |
4" | 6" | 100 | CF | 5 1/8" | 21/64" | 16 | No | 6 | 1 × 10 -13 torr @72° F | 304 Stainless Steel | Polished | 0000000 | 000000 |
For Flange OD | For Trade Number | Bolt Dia. | Thread Size | No. of Bolts Included | No. of Nuts Included | No. of Washers Included | Bolt Material | Each | |
1 21/64" | 16 | 0.167" | 8"-32 | 6 | 6 | 12 | 18-8 Stainless Steel | 0000000 | 00000 |
2 3/4" | 40 | 1/4" | 1/4"-28 | 6 | 6 | 12 | 18-8 Stainless Steel | 0000000 | 00000 |
4 1/2" | 63 | 5/16" | 5/16"-24 | 8 | 8 | 16 | 18-8 Stainless Steel | 0000000 | 00000 |
6" | 100 | 5/16" | 5/16"-24 | 8 | 8 | 16 | 18-8 Stainless Steel | 0000000 | 00000 |