Certified Fire Protection Specialist (CFPS) — Question 29

What flowing pressure of a sprinkler is generally considered a minimum for development of a reasonable spray pattern?

Answer options

• A. 5 PSI (34 KPA)
• B. 7 PSI (48 KPA)
• C. 10 PSI (69 KPA)
• D. 14 PSI (97 KPA)

Correct answer: C

Explanation

A minimum flowing pressure of 10 PSI (69 KPA) is essential for a sprinkler to produce an adequate spray pattern, ensuring even water distribution. Pressures below this level, such as 5 PSI or 7 PSI, may not provide sufficient force for effective coverage, while 14 PSI is higher than necessary for a reasonable spray pattern.