Patent ID: 8499789

Claim:
A valving arrangement for a mobile gas supply system, the valving arrangement comprising: a primary inlet port adapted to be connected to a gas cylinder; a primary outlet port in fluid communication with the primary inlet port, the primary outlet port adapted to be connected to one or more accessories for delivering gas from the gas cylinder, the primary outlet port including a primary check valve for preventing backflow; a regulator disposed between the primary inlet port and the primary outlet port for reducing the pressure of the gas delivered by the gas cylinder, the regulator comprising a pressure regulating component and a feedback line, the feedback line having a first end connected to the pressure regulating component and a second end connected to the valving arrangement at a location between the pressure regulating component and the primary outlet port; a secondary inlet port in fluid communication with the primary outlet port; a secondary outlet port in fluid communication with the primary outlet port and the secondary inlet port, the secondary inlet and secondary outlet ports adapted for connecting the valving arrangement to one or more additional gas cylinders, the secondary outlet port including a secondary check valve for preventing backflow.