Comprehensive and Detailed Step-by-Step Explanation:
Testing Requirements for Hose Valves:
Hose valves in Class II standpipe systems and sprinkler systems are critical components for fire protection.
NFPA 25 (Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems), Section 6.3.1 requires hose valves to be tested annually to ensure proper operation and water flow.
Why Annual Testing is Required:
Regular testing ensures the valves function correctly in case of an emergency.
Annual testing helps identify potential issues such as leaks, corrosion, or improper operation.
Other Options Explained:
Option B (Every two years), Option C (Every three years), Option D (Every four years):
These frequencies do not meet the minimum requirements stated in NFPA 25 for hose valves on standpipe and sprinkler systems.
Summary:
Hose valves on a Class II standpipe system and sprinkler systems must be tested annually per NFPA 25 to ensure operational readiness.