TUBE ASSEMBLY PILOT LINE ALUM.-H
An "assembly" is set of manufactured parts or components that work together in unison as one mechanism or device.
A pilot light is a small gas flame, usually natural gas or liquefied petroleum gas, which serves as an ignition source for a more powerful gas burner. In a pilot assembly, there is thermocouple sitting in the pilot light's flame. The electricity that is created from the flame contacting the thermocouple wire runs to a small electromagnetic valve and holds it open. If the pilot light blows out, the thermocouple quickly cools off. It stops generating electricity and the valve closes.
A tube (tubular section, tubing, or hollow cylinder) usually but not necessarily of circular cross-section, used mainly to convey substances which can flow liquids and gases (fluids), slurries, powders and masses of small solids. Plastic tubing is widely used for its light weight, chemical resistant, non-corrosive properties, and ease of making connections. A tube may also reference a florescent light bulb or a housing of lamps or LEDs.
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