In force mains, a pig is described as

In force mains, a pig is described as

• A. A bullet-shaped object passed through a force main
• B. A power rod
• C. Any foul smelling equipment
• D. The hydraulic rodding truck

Answer: (A)

In force mains, a pig is a bullet-shaped device that is passed through the pressurized sewer line to clean the interior and push debris ahead. Its shape lets it travel smoothly inside the pipe, scraping the walls and helping remove buildup as it moves, often being propelled by the flow or by added pressure. This distinguishes it from other tools like a power rod or a hydraulic rodding truck, which are different kinds of equipment used for cleaning outside of or behind the pipe, not the traveling cleaning device inside the line. The term isn’t about foul-smelling equipment, but about the specific bullet-shaped device used to clear and inspect the interior of the force main.

In force mains, a pig is a bullet-shaped device that is passed through the pressurized sewer line to clean the interior and push debris ahead. Its shape lets it travel smoothly inside the pipe, scraping the walls and helping remove buildup as it moves, often being propelled by the flow or by added pressure. This distinguishes it from other tools like a power rod or a hydraulic rodding truck, which are different kinds of equipment used for cleaning outside of or behind the pipe, not the traveling cleaning device inside the line. The term isn’t about foul-smelling equipment, but about the specific bullet-shaped device used to clear and inspect the interior of the force main.