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How to Identify and Measure Fittings
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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High-Polish Metal Quick-Clamp Sanitary Tube Fittings
- Temperature Range: See Gaskets
The smooth finish inside these fittings makes it easy to remove product residue. Also known as aseptic and tri-clamp fittings, they connect with a gasket, a clamp, and another quick-clamp fitting for a fast and easy way to access your line. The pressure rating of the fitting will vary depending on the clamp you choose, and the temperature rating will vary based on the gasket material you choose.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Note: To complete a connection, you’ll need two quick-clamp fittings, a clamp, and a gasket (all sold separately).
For technical drawings and 3-D models, click on a part number.
Expand-to-Connect Straight Adapters, Tube
- For Use With: Air, Water
- Tubing: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM 270
Expand-to-connect fittings are also known as nonrecess or roll-on ferrules. To connect, insert metal tubing into the fitting and use an expansion tool (sold separately) to press the tubing into the fitting wall.
304 Stainless Steel | 316/316L Stainless Steel | ||||
|---|---|---|---|---|---|
| For Tube OD | Flange OD | Each | Each | ||
| 1" | 1.984" | 00000000 | 00000 | 000000000 | 000000 |
| 1 1/2" | 1.984" | 00000000 | 0000 | 000000000 | 0000 |
| 2" | 2.516" | 00000000 | 0000 | 000000000 | 00000 |
| 2 1/2" | 3.047" | 00000000 | 00000 | 000000000 | 00000 |
| 3" | 3.579" | 00000000 | 00000 | 000000000 | 00000 |
| 4" | 4.682" | 00000000 | 00000 | 000000000 | 00000 |
| Tube Expanders for 1" Tube OD | 0000000 | Each | 0000000 |
304 Stainless Steel Clamps with Wing Nut
| For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
| 1", 1 1/4", 1 1/2" | 1.984" | 500 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |
| 2" | 2.516" | 450 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 2 1/2" | 3.047" | 400 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 3" | 3.579" | 350 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 4" | 4.682" | 200 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
304 Stainless Steel Clamps with Wing Nut, Spring Closure
Spring Closure
| For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
| 1", 1 1/4", 1 1/2" | 1.984" | 500 psi @ 72° F | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 2" | 2.516" | 450 psi @ 72° F | ASTM A269, ASTM A270 | 0000000 | 00000 |
| 2 1/2" | 3.047" | 400 psi @ 72° F | ASTM A269, ASTM A270 | 0000000 | 00000 |
| 3" | 3.579" | 350 psi @ 72° F | ASTM A269, ASTM A270 | 0000000 | 00000 |
| 4" | 4.682" | 200 psi @ 72° F | ASTM A269, ASTM A270 | 0000000 | 00000 |
304 Stainless Steel Clamps with Bolt
| For Tube OD | For Flange OD | Bolt Material | Max. Pressure | For Tube Specifications Met | Each | |
| 1", 1 1/4", 1 1/2" | 1.984" | 304 Stainless Steel | 1,500 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |
| 2" | 2.516" | 304 Stainless Steel | 1,000 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 2 1/2" | 3.047" | 304 Stainless Steel | 1,000 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 3" | 3.579" | 304 Stainless Steel | 1,000 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 4" | 4.682" | 304 Stainless Steel | 1,000 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
304 Stainless Steel Clamps with Lever and Hole for Lockout
| For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Specifications Met | Each | |
| 1 1/2" | 2.14" | 500 psi @ 72° F | ASTM A269, ASTM A270 | ASME BPE | 00000000 | 000000 |
| 2" | 2.65" | 450 psi @ 72° F | ASTM A269, ASTM A270 | ASME BPE | 00000000 | 00000 |
| 3" | 3.72" | 350 psi @ 72° F | ASTM A269, ASTM A270 | ASME BPE | 00000000 | 00000 |
| 4" | 4.82" | 300 psi @ 72° F | ASTM A269, ASTM A270 | ASME BPE | 00000000 | 00000 |
316 Stainless Steel Clamps with Double Bolt
| For Tube OD | For Flange OD | Bolt Material | Max. Pressure | Specifications Met | Each | |
| 1", 1 1/4", 1 1/2" | 1.984" | 316 Stainless Steel | 2,400 psi @ 72° F | ASME BPVC.VIII | 0000000 | 0000000 |
| 2" | 2.516" | 316 Stainless Steel | 1,300 psi @ 72° F | ASME BPVC.VIII | 0000000 | 000000 |
| 3" | 3.579" | 316 Stainless Steel | 1,300 psi @ 72° F | ASME BPVC.VIII | 0000000 | 000000 |
| 4" | 4.682" | 316 Stainless Steel | 820 psi @ 72° F | ASME BPVC.VIII | 0000000 | 000000 |
White Nylon Plastic Clamps with Wing Nut
| For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
| 1", 1 1/4", 1 1/2" | 1.984" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |
| 2" | 2.516" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 2 1/2" | 3.047" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 3" | 3.579" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
| 4" | 4.682" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 00000 |
Gaskets
Buna-N gaskets are oil resistant. EPDM gaskets resist water and steam and work well in humid environments. Silicone gaskets withstand high temperatures. Fluoroelastomer gaskets stand up to fuel, oil, and acid condensates. PTFE gaskets withstand harsh chemicals, with the exception of molten alkali metal and elemental fluorine.
| For Tube OD | ID | OD | Thick. | Temp. Range, °F | Color | Specifications Met | Each | |
Buna-N Rubber | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1" | 0.900" | 1.980" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
| 1 1/2" | 1.400" | 1.980" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 000 |
| 2" | 1.900" | 2.520" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 000 |
| 2 1/2" | 2.400" | 3.050" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 3" | 2.900" | 3.580" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 4" | 3.870" | 4.680" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
EPDM Rubber | ||||||||
| 1" | 0.900" | 1.980" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 1 1/2" | 1.400" | 1.980" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 2" | 1.900" | 2.520" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 2 1/2" | 2.400" | 3.050" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 3" | 2.900" | 3.580" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 4" | 3.870" | 4.680" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
Silicone Rubber | ||||||||
| 1" | 0.900" | 1.980" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 1 1/2" | 1.400" | 1.980" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 2" | 1.900" | 2.520" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 2 1/2" | 2.400" | 3.050" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 3" | 2.900" | 3.580" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 4" | 3.870" | 4.680" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
Fluoroelastomer Rubber | ||||||||
| 1" | 0.900" | 1.980" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 1 1/2" | 1.400" | 1.980" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 2" | 1.900" | 2.520" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 2 1/2" | 2.400" | 3.050" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 3" | 2.900" | 3.580" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
| 4" | 3.870" | 4.680" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
PTFE Plastic | ||||||||
| 1" | 0.900" | 1.980" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
| 1 1/2" | 1.400" | 1.980" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
| 2" | 1.900" | 2.520" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
| 2 1/2" | 2.400" | 3.050" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
| 3" | 2.900" | 3.580" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
| 4" | 3.870" | 4.680" | 0.203" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
Gasket Fittings—Male Straight Adapters, Gasket × Standard Tube
For Tube OD | |||||||
|---|---|---|---|---|---|---|---|
| Gasket Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Includes | Each | |
| 1" | 1" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 304 Stainless Steel Nut | 0000000 | 0000000 |
| 1 1/2" | 1 1/2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 304 Stainless Steel Nut | 0000000 | 000000 |
| 2" | 2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 304 Stainless Steel Nut | 0000000 | 000000 |
| 2 1/2" | 2 1/2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 304 Stainless Steel Nut | 0000000 | 000000 |
Gasket Fittings—Female Straight Adapters, Gasket × Standard Tube
For Tube OD | ||||||
|---|---|---|---|---|---|---|
| Gasket Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
| 1" | 1" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 1 1/2" | 1 1/2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 2" | 2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 2 1/2" | 2 1/2" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
Extra-Support Fittings—Male Straight Adapters, Extra-Support Tube × Standard Tube
Flange OD | |||||||
|---|---|---|---|---|---|---|---|
| For Tube OD | Extra-Support Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
| 1" | 1.995" | 1.984" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 1 1/2" | 1.995" | 1.984" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 00000 |
| 2" | 2.64" | 2.516" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 3" | 3.87" | 3.579" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
Extra-Support Fittings—Female Straight Adapters, Extra-Support Tube × Standard Tube
Flange OD | |||||||
|---|---|---|---|---|---|---|---|
| For Tube OD | Extra-Support Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
| 1" | 1.995" | 1.984" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 1 1/2" | 1.995" | 1.984" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 00000 |
| 2" | 2.64" | 2.516" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |
| 3" | 3.87" | 3.579" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 000000 |