VK478 - Quick Response Flush Pendent Sprinkler (K5.6) | Viking Group Inc.
Viking, Quick Response Fire Sprinkler Head, 3/4", Pendent, Glass Bulb, Brass, 18258 - Century Fire Protection
K ZSTZ X BS Fast response 3mm fire sprinkler head DN15 68 degree national standard fire spray nozzle for school hotel extinguish|Pipe Fittings| - AliExpress
The Difference Between Standard And Quick Response Fire Sprinkler Heads
Sprinkler Characteristics According to NFPA 13 - Fire Protection Specialists
Quick Response Sprinklers | Reliable Sprinkler
VK3021 - Quick Response Pendent Sprinkler (K5.6) | Viking Group Inc.
Quick Response vs Standard Response Sprinklers
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Difference Between Standard, Residential & Quick Response Sprinklers