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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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.
304 stainless steel fittings have very good corrosion resistance. 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 Tube OD | Max. Pressure | Max. Vacuum | Temp. Range Min., °F | Temp. Range Max., °F | Lg. | Wall Thick. | For Use With | Specifications Met | Each | |
304/304L Stainless Steel  | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Polished | ||||||||||
| 13mm | Not Rated | Not Rated | Not Rated | 250° | 26mm | 1.5mm | Dairy, Food | DIN EN 10357 | 0000000 | 000000 |
316/316L Stainless Steel | ||||||||||
Polished | ||||||||||
| 13mm | Not Rated | Not Rated | Not Rated | 250° | 26mm | 1.5mm | Dairy, Food | DIN EN 10357 | 0000000 | 00000 |
High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Air, Dairy, Water
- Temperature Range: See Gaskets
- Tubing:
Inch Butt-Weld Fittings and Quick-Clamp Fittings: Use with welded 304/304L or 316/316L stainless steel that meets ASTM 269 or ASTM 27
Metric Butt-Weld Fittings: Use with welded or seamless 316 stainless steel - Specifications Met:
304 Stainless Steel Adapters, Caps, and Nuts: 3-A Certified 63-04
Gaskets: See table
Join these fittings with a threaded nut and a gasket for a secure connection that grants you easy access to your line. Also known as bevel seat fittings, the fittings are beveled to fit snugly around the gasket, creating a vibration-resistant seal. Fittings are polished to a smooth finish on the interior to prevent product buildup and bacterial growth.
316 stainless steel fittings have excellent corrosion resistance.
Note: For a complete connection, you’ll need a threaded straight adapter, an unthreaded straight adapter, a gasket, and a nut (all sold separately unless noted).
For Tube OD | ||||||
|---|---|---|---|---|---|---|
| Gasket Connection | Butt Weld Connection | Wall Thick. | Material | Max. Pressure | Each | |
| 41mm | 1 1/2" | 0.809" | 316 Stainless Steel | 580 psi @ 72° F | 00000000 | 000000 |
| For Tube OD | Nut Material | Max. Pressure | Each | |
| 41mm | 304 Stainless Steel | 580 psi @ 72° F | 00000000 | 000000 |
| For Tube OD | ID | OD | Thick. | Temp. Range, °F | Color | Each | |
Buna-N Rubber | |||||||
|---|---|---|---|---|---|---|---|
| 41mm | 42.000mm | 52.000mm | 5mm | -30° to 200° | Blue | 0000000 | 00000 |