Viking Early Suppression Fast Response (ESFR) Pendent Sprinkler VK503 is a fast response fusible element type sprinkler designed for early fire suppression. With a 16.8 (242 metric) nominal K-Factor and special deflector, this sprinkler produces large, high-momentum water droplets in a hemispheric pattern below the deflector. This permits penetration of the fire plume and direct wetting of the burning fuel surface while cooling the atmosphere early in the development of a high-challenge fire.
Technical Details
K Factor: 16.8, 242 metric
Manufacturer: Viking
Page: F_120106
Part Number: 14073, 14818
VK Number: VK503
Additional Information:
NOTICE: The product details indicated below are for general reference only and may vary based on the specific product approval and/or application. Always verify product details with the technical data sheet and consult with the Authority Having Jurisdiction (AHJ).
Max Pressure: 175 psi (12 bar)
Response Type: Fast (ESFR)
Occupancy Type: Storage
Thread Size: 3/4" NPT (20 mm BSP)
Min Spacing: Per Standards / Listings
Max Spacing: Per Standards / Listings
Documents and Resources
Technical Data Sheets
Drawings
Revit® Files
Approval Certificates
Additional Technical Information
- Spray Pattern Documentation - VK503 ESFR Pendent Sprinkler Nominal Spray Pattern
- Use of Correct Installation Wrenches for ESFR Sprinklers
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