(PEX x PEX x PEX)
Brass PEX Tees are used separate the water flow in two.
A proper way to read PEX tees is: Side x Side x Top (Middle).
For example, the following PEX fitting has 1/2" size in the middle (top) of the tee: 3/4" x 3/4" x 1/2" PEX.
These PEX fittings are crimp style, manufactured to ASTM F1807 and are compatible with Crimp or Clamp connection systems.
Lead-Free Compliance: Effective January 1st 2014, all PEX fittings used for new installation or repair of existing potable water systems (where water is used for human consumption) must be Lead-Free. Such fittings sold at PexUniverse.com shall be clearly marked as "Lead-Free" in product name, description or both.
Regular brass PEX crimp fittings can still be used for all other applications, including heating, snow melting, etc.