Valves shall be protected against damage due to which of the following?

• A. Mechanical damage.
• B. Chemical damage.
• C. Mechanical, chemical or other damage.
• D. No protection is required.

Answer: (C)

Valves must be shielded from anything that could prevent them from operating when needed. In NFPA 2001, the requirement covers mechanical damage (impacts, shocks, or crush hazards), chemical damage (exposure to corrosive or reactive substances), and other damage that could affect valve integrity or function. Any single type of damage could compromise the ability to properly release the extinguishing agent, so the standard calls for protection against all of these threats. That’s why the best answer includes mechanical, chemical, or other damage. It’s not correct to say no protection is required, and focusing on just one type ignores potential risks from the others. In practice, protection is provided through barriers, cages, secure mounting, or protective housings, and by choosing locations that minimize exposure to hazards.