A monthly external inspection of a dry valve intermediate chamber should indicate ______.

A monthly external inspection of a dry valve intermediate chamber should indicate ______.

• A. Leaking
• B. Not Leaking
• C. Corrosion
• D. Blockage

Answer: (B)

The main idea being tested is that the intermediate chamber of a dry valve must stay dry to preserve the air pressure that keeps the dry valve closed until a sprinkler head is activated. In a dry-ppipe system, the intermediate chamber is part of the control area that uses air pressure to hold the valve shut. During a monthly external inspection, you’re checking for signs that this chamber is leaking. If there’s any leakage, air pressure is lost or water can enter the chamber, which undermines proper valve operation and can delay or misdirect water flow when needed. Therefore, the correct indication is that it should not be leaking. Corrosion or blockage might indicate other issues, but they aren’t what a normal external monthly check is specifically confirming.

The main idea being tested is that the intermediate chamber of a dry valve must stay dry to preserve the air pressure that keeps the dry valve closed until a sprinkler head is activated. In a dry-ppipe system, the intermediate chamber is part of the control area that uses air pressure to hold the valve shut. During a monthly external inspection, you’re checking for signs that this chamber is leaking. If there’s any leakage, air pressure is lost or water can enter the chamber, which undermines proper valve operation and can delay or misdirect water flow when needed. Therefore, the correct indication is that it should not be leaking. Corrosion or blockage might indicate other issues, but they aren’t what a normal external monthly check is specifically confirming.