What is used to protect sewer lines from high temperatures and pressures from blowdowns?

A blowdown tank is designed to protect sewer lines from high temperatures and pressures that occur during blowdowns. Blowdowns are a crucial aspect of maintaining a boiler system, as they help remove sediments and maintain water quality. During this process, water is discharged from the boiler, and this water can be very hot and under significant pressure.

The blowdown tank receives the hot blowdown water, allowing it to cool down and reducing the pressure before it is safely released into the sewer system. This addition of a blowdown tank helps prevent damage to the sewer lines that could result from the extreme conditions of the blowdown process.

In contrast, a safety valve is aimed at preventing overpressure in a system, while a pressure regulator controls and maintains consistent pressure within the system but does not specifically address blowdowns. An expansion tank caters to the expansion of water as it is heated but is not specifically related to managing the blowdown process. Therefore, the blowdown tank is essential for ensuring safe and effective handling of high-pressure and high-temperature discharge from the boiler.