A professional who installs and repairs gas meters, regulators, ranges, heaters, and refrigerators in customer's establishment, using manometer, voltmeter, handtools, and pipe-threading tools. Responsibilities include:

• Measures, cuts, and threads pipe and connects it to feeder line and equipment or appliance, using rule, pipe cutter, threader, and wrench.
• Tests and examines pipelines and equipment to locate leaks and faulty pipe connections and to determine pressure and flow of gas, using manometer, voltmeter, combustible gas indicator, and soap lather.
• Dismantles meters and regulators, and replaces defective pipes, thermocouples, thermostats, valves, and indicator spindles, using handtools.
• May assemble new or reconditioned appliances.
• May collect for monthly bills or overdue payments.
• May be designated according to appliance serviced as gas-refrigerator servicer; gas-stove servicer.