Uponor Q4776363 Coupling, 5/8 in Nominal, ProPEX® End Style, Polysulfone, Domestic

WIRQ4776363 MFG #: Q4776363
  • Country of Origin: US
  • Dimensions: 1 in W
  • Domestic/Import: Domestic
  • End Style: ProPEX®
  • Fitting/Connector Type: Coupling
  • Length: 1.86 in
  • Manufacturer Name: Uponor
  • Material: Polysulfone
  • Nominal Size: 5/8 in
  • Pressure Rating: 150 psi
ProPEX® EP, LF brass and brass couplings make PEX-to-PEX connections.
  • Features and More


  • 20% glass-reinforced polysulfone
  • ASTM F877 specification for crosslinked polyethylene (PEX) plastic hot and cold-water distribution systems
  • ASTM F1960 specification for cold expansion fittings with PEX reinforcing rings for use with cross-linked polyethylene (PEX) tubing
  • ASTM E84 test method for surface burning characteristics of building materials
  • ASTM E814 test method for fire tests of penetration firestop systems
  • ASTM E119 test methods for fire tests of building construction and materials


  • PEX-A Plumbing System
  • Hydronic Radiant Heating and Cooling System
  • Snow and Ice Melting System
  • Permafrost Protection System
  • Turf Conditioning System and AquaSAFE Fire Safety System


  • ASTM E84/E119/E814/F877/F1960
  • CAN/CSA B137.5
  • cNSFus-pw
  • cNSFus-rfh
  • cQAIus P321
  • NSF 14/61
  • ICC-ES-PMG-1006
  • ICC-ES-PMG-1012
  • UP Code