Abstract: In a liquefied gas supply system, a pressure switch senses pressure in the low-pressure supplied line of the system and opens a bypass valve to thereby bleed gas from the relatively warm reserve side and keep up the pressure in the supplied line while allowing the relatively cold service side to continue to contribute to the feed to the supplied line, but at the same time a flow limiting orifice limits cooling and controls temperature at the relatively cold service side by inhibiting the rate of absorption of heat-of-vaporization at the service side.