Streamline PRS™ mechanical press copper fittings are for use in plumbing or mechanical applications. Sizes range from 1/2″ — 4″ and the fittings are designed to join ASTM B88 (Types K, L, M) hard-drawn copper tube (1/2″ — 4″) and soft copper tube (1/2″ — 1-1/4″).


1/2” — 4” including couplings, elbows, tees, adapters, fitting reducers, caps, and flanges


  • Potable water
  • Hydronic heating (w/ glycol)
  • Chilled water
  • Compressed air (200 PSI max)
  • Non-medical gases (140 PSI max)
  • Low pressure steam (15 PSI max)
  • Vacuum (29.2” mercury max @ 140°F)


  • Operating pressure: 300 PSI CWP max
  • Operating temperature range: -20°F — 250°F
  • Approved for installations in above and below ground applications as allowed by local code.

Approvals & Certifications

  • ASME B16.51
  • IAPMO PS-117
  • NSF/ANSI 61
  • NSF/ANSI 372
  • CSA
  • ABS Tier II PDA /Class III Applications.


Streamline PRS™ fittings carry a 50-year limited warranty against defects in material and workmanship.


As a leader in manufacturing of plumbing, refrigeration and industrial products, we are proud to partner with ARCOM, a leader in specifications, to provide product data and customized specifications for Streamline PRS™ fittings through the industry-trusted MasterSpec® platform.

MEP Services

Trimble MEP Services are designed to help mechanical, electrical, and plumbing (MEP) contractors and engineers by deploying fast and accurate paths to integrated construction processes. Mueller Streamline’s press fittings are available in the Trimble MEP package for contractors to support estimating, takeoff, fabrication, and project management.   

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  • PipeDesigner 3D – incorporates intelligent data editing, automatic layering and smart toolsets to quickly populate 3D models and drive standardization
  • Trimble® AutoBid – provides estimating software for commercial MEP contractors and engineers
  • BuildingData/SysQue – estimating and takeoff tool, providing a library of managed content for users of Autodesk Fabrication or Autodesk Revit applications.




Download resources

Copper Press-Joint Fittings for Plumbing and Mechanical Applications – SubmittalDownload
Copper Press-Joint Valves for Plumbing and Mechanical Applications – SubmittalDownload
Domestic Water Piping – Copper Press-Joint Fittings – Engineering SpecsDownload
Facility Water Distribution – Copper Press-Joint Fittings – Engineering SpecsDownload
Hydronic Piping – Copper Press-Joint Fittings – Engineering SpecsDownload
Project ProfilesDownload
Short CutsDownload
Streamline Copper Press-Joint Fittings CatalogDownload
Streamline PRS Copper Press-Joint FittingsDownload
Streamline PRS Data SheetDownload
Streamline PRS Dielectric UnionsDownload
Streamline PRS Two-Piece FlangeDownload
Streamline® PRS Copper Press-Joint Fittings PDFDownload
Streamline® PRS Copper Press-Joint Fittings XLSDownload