Patent ID: 6923008

Claim:
A method of transferring a first substance through a nozzle comprising at least one moving part into a receiving line, said nozzle within an ambient environment and removable from said receiving line, said ambient environment comprising at least one constituent, said method comprising: introducing a second substance into said at least one moving part and a layer defined by a removable boot when said boot is adapted to said nozzle restrictively scaling said layer from said ambient environment, said layer in communication with said at least one moving part, said boot made from a malleable material capable of accommodating removal and replacement of said boot from said nozzle at ambient temperatures; forcing said at least one constituent from said at least one moving part and said layer with a flow of said second substance; restricting incursion of said at least one constituent from said at least one moving part and said layer when transferring said first substance through said nozzle into said receiving line, wherein said first substance is transferred at a temperature below the freezing temperature of said at least one constituent and above the freezing temperature of said second substance; introducing said second substance into an abutting interface defined when said nozzle is engaged to said receiving line, wherein said layer is in communication with said abutting interface; forcing said at least one constituent from said abutting interface with said flow of said second substance; and restricting incursion of said at least one constituent from said abutting interface when transferring said first substance through said nozzle into said receiving line.