It is good practice to put slope in steam line installations because it

Installing a slope in steam line installations is essential primarily because it helps eliminate condensate pockets. In a steam system, steam travels through pipes, and as it cools, it can condense back into water. If the pipe is not sloped adequately, this condensate can collect and form pockets, which can obstruct steam flow and lead to operational inefficiencies. These pockets of condensate can also create a risk of water hammer, which can damage the piping and equipment.

By ensuring the pipes have a proper slope, the condensate is directed back towards the steam trap or draining point, which keeps the system free of trapped water, improves steam flow, and enhances overall system efficiency. This practice minimizes the risk of issues associated with water accumulation, such as pressure fluctuations and reduced thermal efficiency in the system.

Thus, the correct reasoning for placing a slope in steam line installations lies in the necessity to maintain a clear pathway for steam flow and prevent the accumulation of condensate that could impede performance.