Have a project that is a large ESFR warehouse with many storage bays and many zoned systems. About every 150 to 200 feet is a 1-1/2 inch hose valve that is tied to the overhead system with 1-inch pipe drops.
What is the purpose for these? Where is the code basis?
We may be modifying some of these areas with new work and I want to be sure we're upkeeping code, but I'm not familiar with the purpose of these hose valves. Thanks in advance.
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