In a dry pipe system, there is no water standing in the pipe - it is being held back by what type of valve?
Correct Answer: D
Explanation/Reference:
Explanation:
In a dry pipe system, there is no water standing in the pipe - it is being held back by a clapper valve. In the event of a fire, the valve opens, the air is blown out of the pipe, and the water flows.
Incorrect Answers:
A: The valve used in a dry pipe system is called a clapper valve, not a relief valve. Therefore, this answer is incorrect.
B: The valve used in a dry pipe system is called a clapper valve, not an emergency valve. Therefore, this answer is incorrect.
C: The valve used in a dry pipe system is called a clapper valve, not a release valve. Therefore, this answer is incorrect.
References:
Krutz, Ronald L. and Russell Dean Vines, The CISSP and CAP Prep Guide: Mastering CISSP and CAP, Wiley Publishing, Indianapolis, 2007, p. 463