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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Standard-Wall Butt-Weld Stainless Steel Unthreaded Pipe Fittings
Also known as Schedule 40 fittings, these have thicker walls than our thin-wall stainless steel unthreaded butt-weld fittings. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASME B16.9, ASTM A403, MSS SP-43
- Pipe Nipples and Pipe: Use Schedule 40 stainless steel
- Flanges: Use Class 150 stainless steel
Thin-Wall Butt-Weld Stainless Steel Unthreaded Pipe Fittings
Also known as Schedule 10 fittings, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Water
- Specifications Met: ASME B16.9, ASTM A403, MSS SP-43
- Pipe: Use Schedule 10 stainless steel
316/316L Stainless Steel | |||||
|---|---|---|---|---|---|
Pipe Size | Wall Thick. | Lg. | Construction | Each | |
| 1 | 0.109" | 1" | Welded | 000000000 | 0000000 |
| 1 1/4 | 0.109" | 1 1/4" | Welded | 000000000 | 000000 |
| 1 1/2 | 0.109" | 1 1/2" | Welded | 000000000 | 000000 |
| 2 | 0.109" | 2" | Welded | 000000000 | 00000 |
| 2 1/2 | 0.12" | 2 1/2" | Welded | 000000000 | 000000 |
| 3 | 0.12" | 3" | Welded | 000000000 | 000000 |
| 4 | 0.12" | 4" | Welded | 000000000 | 000000 |
| 6 | 0.134" | 6" | Welded | 000000000 | 000000 |
| 8 | 0.148" | 8" | Welded | 000000000 | 000000 |
| 10 | 0.165" | 10" | Welded | 000000000 | 00000000 |
| 12 | 0.18" | 12" | Welded | 000000000 | 00000000 |
Standard-Wall Butt-Weld Steel Unthreaded Pipe Fittings
Butt-weld fittings allow for a smooth connection that provides maximum flow. They have beveled ends that, when flush to pipe, create a trough for a strong, permanent weld. Fittings are also known as Schedule 40. They are for use in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234, ASME B16.9
- Pipe Nipples and Pipe: Use Schedule 40 steel
- Flanges: Use Class 150 steel
| Pipe Size | Lg. | Wall Thick. | Construction | Each | |
| 1 | 1" | 0.133" | Seamless | 000000000 | 000000 |
| 1 1/4 | 1 1/4" | 0.14" | Seamless | 000000000 | 00000 |
| 1 1/2 | 1 1/2" | 0.145" | Seamless | 000000000 | 00000 |
| 2 | 2" | 0.154" | Seamless | 000000000 | 00000 |
| 2 1/2 | 2 1/2" | 0.203" | Seamless | 000000000 | 00000 |
| 3 | 3" | 0.216" | Seamless | 000000000 | 00000 |
| 4 | 4" | 0.237" | Seamless | 000000000 | 00000 |
| 6 | 6" | 0.28" | Seamless | 000000000 | 000000 |
| 8 | 8" | 0.322" | Seamless | 000000000 | 000000 |
Thick-Wall Butt-Weld Steel Unthreaded Pipe Fittings
With thicker, stronger walls than our standard-wall butt-weld pipe fittings, these fittings stand up to your high strength applications. Weld them flush against pipe for a smooth connection that permits maximum flow. These fittings have beveled ends that create a trough for a leak-resistant, permanent weld. Made of steel, they’re for use in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Specifications Met: ASTM A234
- Pipe Nipples and Pipe: Use Schedule 80 steel
- Flanges: Use Class 300 steel
Butt-Weld Fittings for Stainless Steel Tubing
- For Use With: See table
- Temperature Range: See table
- Tubing:
304 Stainless Steel: Use with 304/304L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270
316 Stainless Steel: Use with 316/316L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except ASME BPE and DIN EN 10357 fittings with only ASTM A269 or ASTM A270 - Specifications Met: See table
Weld these fittings to tubing for a permanent, flush connection that permits smooth flow through a line.
316 stainless steel fittings have excellent corrosion resistance.
DIN EN 10357 fittings meet an international standard for butt-weld fitting specifications. This standard is common in the food and chemical industries.
For technical drawings and 3-D models, click on a part number.
316/316L Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Max. Pressure | Max. Vacuum | Temp. Range Min., °F | Temp. Range Max., °F | Lg. | Wall Thick. | For Use With | Specifications Met | Each | |
Polished | ||||||||||
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 3/4" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 000000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/8" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/2" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 1 1/4" | 200 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 7/8" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 000000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 2 1/4" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 3" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 3 3/4" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 4 1/2" | 0.065" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 6" | 0.083" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 9" | 0.109" | Dairy, Food | 3-A Certified 63-04 | 0000000 | 000000 |
| 13mm | Not Rated | Not Rated | Not Rated | 250° | 26mm | 1.5mm | Dairy, Food | DIN EN 10357 | 0000000 | 00000 |
| 19mm | Not Rated | Not Rated | Not Rated | 250° | 35mm | 1.5mm | Dairy, Food | DIN EN 10357 | 0000000 | 00000 |
| 29mm | Not Rated | Not Rated | Not Rated | 250° | 50mm | 1.5mm | Dairy, Food | DIN EN 10357 | 0000000 | 00000 |
| 41mm | Not Rated | Not Rated | Not Rated | 250° | 60mm | 1.5mm | Dairy, Food | DIN EN 10357 | 0000000 | 00000 |
| 53mm | Not Rated | Not Rated | Not Rated | 250° | 70mm | 1.5mm | Dairy, Food | DIN EN 10357 | 0000000 | 00000 |
Dull | ||||||||||
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 3/4" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/8" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 1 1/2" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 2 1/4" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 3" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 3 3/4" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 4 1/2" | 0.065" | Air, Food, Water | __ | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 6" | 0.083" | Air, Food, Water | __ | 00000000 | 000000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | -65° | 250° | 9" | 0.109" | Air, Food, Water | __ | 00000000 | 000000 |
316/316L Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| For Tube OD | Max. Pressure | Max. Vacuum | Temp. Range, °F | Length (A) | Wall Thick. | For Use With | Each | |
Polished | ||||||||
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 5/16" | 0.065" | Dairy, Food | 00000000 | 000000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 15/32" | 0.065" | Dairy, Food | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 5/8" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 15/16" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 1 1/4" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 2 1/2" | 450 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 1 9/16" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 1 7/8" | 0.065" | Dairy, Food | 0000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 2 1/2" | 0.083" | Dairy, Food | 0000000 | 00000 |
Dull | ||||||||
| 1/2" | 1,200 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 5/16" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 3/4" | 1,000 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 15/32" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 1" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 5/8" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 1 1/2" | 600 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 15/16" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 2" | 550 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 1 1/4" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 3" | 350 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 1 7/8" | 0.065" | Air, Food, Water | 00000000 | 00000 |
| 4" | 250 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 2 1/2" | 0.083" | Air, Food, Water | 00000000 | 00000 |
| 6" | 120 psi @ 72° F | 10 -6 torr @ 72° F | -65° to 250° | 3 3/4" | 0.109" | Air, Food, Water | 00000000 | 000000 |
Extra-High-Polish Metal Quick-Clamp Sanitary Tube Fittings
- For Use With: Air, Beverage, Dairy, Deionized Water, Food, Pharmaceuticals, Water
- Temperature Range: See Gaskets
- Tubing:
Fittings with 700 psi @ 72° F max. pressure: Use with 316/316L stainless steel that meets ASTM A269 or ASTM A270
Fittings with all other max. pressures: Use with 316/316L stainless steel that meets ASTM A249, ASTM A269, or ASTM A270
Gaskets: Use with 304/304L and 316/316L stainless steel - Specifications Met: See table
- Certification: Material Certificate with Traceable Lot Number and Test Report
Polished to a 20 Ra finish, these fittings have an extra-smooth interior that prevents product buildup and inhibits bacteria growth. Use them in pharmaceutical and bioprocessing applications. Also known as tri-clamp fittings, they connect with a clamp, a gasket, and another quick-clamp fitting for a fast and easy way to access your line. Fittings are 316 stainless steel for excellent corrosion resistance.
Fittings with butt-weld end are also known as ferrules; they weld to tubing for a permanent connection.
The pressure rating of the fitting will depend on the clamp you choose.
The temperature rating of the fitting will vary depending on the gasket material you choose.
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.
| For Tube OD | Flange OD | Wall Thick. | Material | Max. Pressure | Specifications Met | Each | |
| 1" | 1.984" | 0.065" | 316/316L Stainless Steel | 200 psi @ 100° F | ASME BPE | 00000000 | 0000000 |
| 1 1/2" | 1.984" | 0.065" | 316/316L Stainless Steel | 200 psi @ 100° F | ASME BPE | 00000000 | 00000 |
| 2" | 2.516" | 0.065" | 316/316L Stainless Steel | 200 psi @ 100° F | ASME BPE | 00000000 | 000000 |
| For Tube OD | For Flange OD | Max. Pressure | Each | |
| 1", 1 1/4", 1 1/2" | 1.984" | 700 psi @ 72° F | 0000000 | 000000 |
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 |
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 |
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 |
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 |
PTFE Plastic | ||||||||
| 1" | 0.900" | 1.980" | 0.18" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
| 1 1/2" | 1.400" | 1.980" | 0.18" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
| 2" | 1.900" | 2.520" | 0.18" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |