Pexflow EPCP0100-NL PEX X PEX Straight Coupling Barb Pipe Fitting, 1", Brass HIGH QUALITY: Constructed of lead free (DZR) brass for superior reliability and strength EASY TO USE: Fittings Work with Crimp Ring or Clamp Connection Methods Barb x barb x barb connection for PEX plumbing systems, Rated to 200F and 200 PSI Compatible with PEX pipe size 1 Inch NSF, UPC and CSA approved, Manufactured to ASTM standard F1807