Bookmark and Share

VK506 - ESFR Pendent Sprinkler (K22)

The model VK506 is a cULus Listed and FM Approved, Early Suppression Fast Response (ESFR) type storage sprinkler capable of suppressing specific high-challenge fires.  ESFR sprinklers can eliminate the use of in-rack sprinklers when protecting high-piled storage of certain specified materials up to 40 ft (12,2 m) with ceilings up to 45 ft (13,7 m). They can also reduce or eliminate the need for a system fire pump and provide flexibility when sizing system piping.  Viking VK506 ESFR Pendent Sprinklers are primarily intended to protect the following types of storage, which tend to produce severe-challenge fires: palletized and solid pile storage and single, double, multiple row, and portable open rack storage (no open-top containers or solid shelves).  Please refer to technical data sheet for additional design and application data.

Technical Details

K Factor: 

320 metric





Part Number: 


VK Number: 


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: 


Thread Size: 

1" NPT (25 mm BSP)

Min Spacing: 

Per Standards / Listings

Max Spacing: 

Per Standards / Listings