A professional who tests, repairs, and adjusts regulators (gas governors), relief valves, and related equipment used to control gas pressure in city gas mains and service pipes, pipelines, in-plant gas systems, and petroleum refineries. Responsibilities include:

• Dismantles regulator and examines such parts as springs, valves, and diaphragm for wear or deterioration.

• Cleans corrosion and tar deposits from serviceable parts, using solvents and wire brush.

• Cuts seat to receive new orifice, taps inspection ports, and performs other repairs to salvage usable materials, using handtools and machine tools.

• Reassembles regulator with new and reconditioned parts, according to blueprints.

• Connects regulator to test stand and turns screw adjustment until test-stand gauges indicate regulator inlet and outlet pressures are according to specifications for regulator and type of service.

• Tests and adjusts pressure setting of relief valves in similar manner.

• Records work done, pressure adjustment, and related data for each instrument.

• May install regulators, and such related equipment as gas meters, odorization units, and gas-pressure-telemetering equipment تصليح جولة