Swagelok® Weld Fittings
Swagelok offers weld fittings, in a variety of materials, sizes, and shapes to suit any industrial or high-purity application.

• Ultrahigh-purity, specially cleaned, and industrial
• SAF 2507™ super duplex
• Vacuum service
• Stainless steel tubular fittings

More information
Find weld fittings in the product search.
Contact your authorized Swagelok sales and service representative.

Specifications Pressure Ratings Temperature Ratings Material End Connections • Types • Sizes Configurations

Up to 12 600 psig (868 bar) Up to 1000°F (537°C) 316, 316L, 316L VIM-VAR stainless steels Micro-Fit® (miniature tube butt weld), tube butt weld, tube socket weld, pipe socket weld, pipe butt weld 1/8 to 1 in.; 6 to 18 mm Straights, elbows, tees, crosses, reducers, adapters

Micro-FIt miniature tube butt weld fittings allow close component spacing and provide flow and service ratings equal to larger fittings.

Features

• Precision fittings for manual or automatic welding equipment.
• Square, sharp, burr-free weld ends.
• Precisely finished diameters match tube diameters.

Cleaning and Packaging
Standard—Weld fittings are cleaned in accordance with Swagelok Standard Cleaning and Packaging (SC-10).

Special—Weld fittings are available specially cleaned and packaged to ensure compliance with product cleanliness requirements as stated in ASTM G93 Level C.

Ultrahigh-Purity—A variety of fittings are available with controlled surface finishes, electropolished, and specially cleaned. The wetted surfaces are finished to 5 µin. (0.13 µm) Ra. For more information, see Swagelok Ultrahigh-Purity Process Specification (SC-01).

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Specifications Pressure Ratings Temperature Ratings Material End Connections • Types • Sizes Configurations

Up to 26 200 psig (1810 bar) Up to 600°F (315°C) SAF 2507 super duplex stainless steel Tube butt weld, male adapters, female connectors 1/4 to 1 in. Straights, elbows, tees, reducers

Features

• Excellent corrosion resistance in chloride-containing environments.
• Manufactured from a special grade of SAF 2507 material that has a minimum pitting resistance equivalent (PRE) value of 42.5.
• Welding process requires no filler material or special shielding gases.
• Radius internal junction smooth transitions flow.
• Material traceability.

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Weld Fittings for Vacuum Service

Specifications Vacuum Range Temperature Range Material End Connections • Types • Sizes Configurations

≥10–9 Torr –325 to 842°F (–200 to 450°C) 304 stainless steel Tube butt weld 1/2 to 4 in. Elbows, return bends, tees, reducers, end caps

• Vacuum-annealed, cold-formed tubular fittings minimize likelihood of stress corrosion cracking.
• Tees and crosses are fabricated using the pulled-port and 100 % penetration GTAW weld techniques.
• 304 stainless steel construction with bead-blasted finish standard; 316 stainless steel available.

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Specifications Material End Connections • Types • Sizes ID Surface Finish • Ultrahigh-purity • Chemically cleaned and passivated Configurations

316L stainless steel Tube butt weld 1/4 to 4 in.; 6 to 18 mm 10 µin. (0.25 µm) Ra max 20 or 32 µin. Ra max Elbows, tees, reducers, end caps, coaxial fittings

More Information
Download the Stainless Steel Tubular Fittings—Ultrahigh-Purity and Chemically Cleaned and Passivated catalog.
Download the Ultrahigh-Purity Stainless Steel Tubular Fitting—Metric Sizes catalog.
Contact your authorized Swagelok sales and service representative.

Features

• Each tubular fitting is marked to identify manufacturer, material type, and heat code.
• Controlled sulfur levels promote reliable, consistent orbital welding.

Processing
Ultrahigh-Purity—Ultrahigh-purity tubular fittings are rinsed with 18 MΩcm DI water and purged with filtered nitrogen. Ends are sealed in an ISO Class 4/Federal Class 10 cleanroom.

Chemically Cleaned and Passivated—Chemically cleaned and passivated tubular fittings are manufactured from 316L stainless steel. Nonvolatile residue levels are compliant with ASTM G93, Level A requirements. These fittings also meet requirements of CGA G4.1.

Packaging
Ends are faced and protected with polyamide nylon film and polyethylene caps; packed in polyethylene bags.

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