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 (SC‑11)—Weld fittings are available cleaned and packaged in accordance with Swagelok Special Cleaning and Packaging (SC‑11) to ensure compliance with product cleanliness requirements as stated in ASTM G93 Level C. 

Photovoltaic (SC‑06)—Select weld fittings are available cleaned and packaged in accordance with Swagelok Photovoltaic Process Specification (SC‑06) to meet the process requirements of solar cell production. Standard surface finish is average 10 μin. (0.25 μm) Ra.
SC-06–cleaned weld fittings are available with controlled surface finishes and electropolishing. Wetted surfaces are finished to 5 μin. (0.13 μm) Ra.

Ultrahigh-Purity (SC‑01)—Select weld fittings are available with controlled surface finishes, electropolished, and specially cleaned. 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, crosses, 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; 316L stainless steel available.

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Stainless Steel Tubular Fittings

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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