Sprinklers & Valves (Wet System)
The VK4621 is a quick response concealed pendent sprinkler suited for life-safety applications where aesthetics and fast activation are both required.
Quick Response element
Concealed low-profile design
K-Factor 5.6 for efficient spray
Cover plate detaches before activation
UL/FM Approved
Type: Concealed Pendent – Quick Response
K-Factor: 5.6 (80.6 metric)
Max Working Pressure: 175 psi
Temperature Rating: 135°F–200°F
Materials: Brass body, stainless steel deflector
Cover Plate Finish: White, Chrome, Custom
Connection Size: 1/2″ NPT
Hotels & hospitality
Residential high-rise
Offices and commercial spaces
Healthcare environments
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