Abstract: A cartridge type control valve for replaceable use in the dispensing head of a fluid dispensing system includes, a fluid transfer assembly having a composite fluid transfer chamber means and an inlet duct assembly made of plastic material, the inlet duct assembly includes a longitudinal leg formed integral with the bottom and sidewall of the fluid transfer chamber means and a transfer leg operatively connected to the longitudinal leg and locked to the sidewall to prevent relative rotation thereof, valve means including a valve stem made of plastic material coacting with a valve port formed in the inlet duct assembly to control flow of fluid through the fluid transfer assembly, and an actuating assembly for operating the valve means with a regulator sub-assembly therein having a valve guide made of plastic material disposed for operative connection to the valve stem.