PEX Fittings

JMF brass and plastic PEX fittings are used to join, route, and cap water service and radiant heat tubing. They are formed from heavyweight plumbing brass bar stock and are completely certified and safe for potable water systems. JMF PEX fittings are made in accordance with ASTM F197-4 and CSA B137-9/B137-10. JMF PEX fittings are easy to install and provide a secure connection using common crimp rings.



  • • ASTM F 1807 - Standard specification for brass or copper insert fittings with copper crimp rings

  • • ASTM F 2098 - Standard specification for stainless steel clamp crimp rings