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Publications GAS TRADE: UNIT 31 (5th ed. pub. 2016)

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GAS TRADE: UNIT 31 (5th ed. pub. 2016) - Valve trains and burners

Publication Year:

  • 2016

Total Pages:



  • CSA
CSA Group's 2015 Gas Trade materials reference the Red Seal Program's trade outlines for your preparation to become a nationally recognized gasfitter. Please visit the Red Seal Program's website for more details.

Unit 31 - Valve trains and burners


A valve train is a manifold of components and piping that supplies fuel and air to a burner. Gas technicians/fitters must be familiar with the components that make up main fuel trains, air supply trains and pilot air/fuel trains. They must also be familiar with the burners themselves and understand how to install and maintain burners and gas trains so that gas-fired appliances operate safely and with maximum fuel efficiency. Gas technicians/fitters are also frequently called on to convert gas appliances from one fuel to another, which involves changes to the valve train and burner.

Learning Objectives:

At the end of this unit you will be able to:

  • Identify valve train components.

  • List the components used in specific valve trains.

  • State the sequence of operation of major valve trains.

  • Describe the operation of common gas flow controllers.

  • Describe common types of burners.

  • Describe maintenance and troubleshooting procedures for valve trains and burners.

  • Describe procedures for converting large appliances to alternate fuels.

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GST REG No R119441681
QST REG No R1006017360