Moen 8373HD Commercial 1/2-Inch PEX Posi-Temp Valve, Brass Crimp style PEX installation, not Expansion style 5 year limited warranty 5 year limited warranty Moen Posi-Temp valve not included No. Valve 8370HD or 8371HD or 8372HD or 8373HD or 8374HD. sold separately required for operation