Mobile natural gas monitoring and conditioning stations consisting primarily of flow regulators for commercial use, gas chromatographs, pressure relief valves, and also heat exchangers not being parts of machines, gas burners for industrial use, fuel filters, liquid storage tanks not of metal or masonry, and gas dispensing electric pump, all sold as a unit used to monitor the condition of natural gas, filter and separate liquids from natural gas, decompress and adjust natural gas flows from v...