Competency B1: Select Regulators, Valves, and Valve Train Components
Valves are devices by which the flow of a fluid can be started, stopped, or regulated by a movable part that opens or obstructs passage. Gas valves control the flow of gas at various points along the gas piping system. There are a series of valves and components located on the appliance gas supply known as the valve train. The valve train is used to manually and automatically start, stop and regulate the gas flow to the appliance as needed. In this competency you will look at the purpose of each of these components as well as the variety of valves.
Learning Objectives
After completing the learning tasks in this competency, you will be able to:
- Select valves
- Describe the gas valve trains for appliances rated at 400 MBH or less.
- Describe the purpose and operation of gas pressure regulators
- Describe the purpose and operation of automatic gas valves