Control regulator and delivery system for a cryogenic vessel

摘要

The regulator (31) of the invention includes a pressure builder inlet (D3), economizer outlet (75) and a pressure builder outlet/economizer inlet (79). A valve (77) is moved in response to the pressure of the gas head (34) in the tank to connect the pressure builder outlet/economizer inlet with either the pressure builder inlet or economizer outlet. As a result, the single dual-function regulator (31) of the invention allows gas to be delivered from either the gas head (34) or the liquid body as determined by the pressure of the gas head. A manual pressure build up valve (99) is provided to allow isolation of the pressure build up system.