【Piping Valve Technical Edition – Daily Question on Common Piping Errors】20170731
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Discussion on Common Piping Errors 015: Which of the following designs (the diagram shows a piping design for an outdoor exhaust pipe) is correct? A. B. Answer: B. Outdoor exhaust pipes that open upward often accumulate rainwater inside, so they must be designed to curve downward to prevent water accumulation. PS: Excerpted from the Chemical Pipeline Design Manual
B is correct. Outdoor exhaust outlets should point upward, as this allows rainwater to accumulate inside the pipes; therefore, they should be designed to point downward so that no water accumulates there.