The present disclosure relates to novel and advantageous connector assemblies for use with a liner-based assembly. In one embodiment, a connector assembly for use with a liner-based assembly can include a pressure port, a dispense port, a headspace removal port, and a locking mechanism. The pressure port can be adapted for connection to a pressure source. The dispense port can be adapted for fluid communication with a source of material to be dispensed from the liner-based assembly. The headspace removal port may be configured for removing a gas from the liner-based assembly. The locking mechanism may be used for locking the connector to the liner-based assembly when contents therein are under pressure. In some embodiments, the dispense port and headspace removal port may be operably coupled providing a flow path for recirculation of the contents within a liner of the liner-based assembly.