From the Manufacturer
Watts Lead Free brass insert fittings are used in potable PEX pipe systems. They are installed using either stainless steel ratcheting Cinch bands or with more traditional copper Crimp rings. Both applications require the use of either a Cinch tool or Crimp tool. Manufactured in accordance with American Society for Testing and Materials (ASTM International) F877 and F1807. Listed by the NSF International to NSF Standards 14 and 61 for use in potable water systems. Listed by NSF International to be in compliant to the Uniform Plumbing Code. Labeled B137.5 which indicates that it is compliant to the CSA Standards B137.5.
1/2" x 1/2" x 3/8", Brass, Lead Free, Barb Pex Tee, Makes A 3/8" Branch Off A 1/2" x 1/2" Run For Use With Pex Tubing & Connected With Stainless Steel Cinch Clamps & Cinch Tool True Value #608-743, ASTM F-876, ASTM F-877 To SDR-9 Dimensional Standards, NSF 14 & 61 For Use In Potable Water Systems, CSA B137.5 Standards, NSF CL-R Certified For Use In Hot Water Systems Where Chlorinated 140 Degree Fahrenheit Hot Water Can Be Constantly Re-Circulated, The Wetted Surface Of This Product Contacted By Consumable Water Contains Less Than 1/4 Of 1 Percent, 0.25%, Of Lead By Weight, Meets AB1953 California & VT S152 Vermont Low Lead Restrictions.