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Residential Flush Pendent Sprinkler (K3.8)

The Model VK420 residential flush pendent sprinkler is FM Approved for new and retrofit residential applications.  The sprinkler is also cULus Listed for replacement only.  The 3.8 K-factor sprinkler is available with a is a small, flush, 165 °F (74°C) temperature rating and either a Polished Chrome or White painted finish. The two-piece design of the sprinkler and ceiling ring allows for installation and testing of the sprinklers prior to ceiling installation.  The ceiling ring allows for up to ½” (12,7 mm) of vertical adjustment and can be removed and re-installed, allowing access above removable ceiling panels without shutting down the sprinkler system and removing the sprinkler.

Technical Details

K Factor: 

3.8 (55)

Manufacturer: 

Viking

Page: 

145a-b

Part Number: 

09458, 
09390

VK Number: 

VK420

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 (Residential)

Occupancy Type: 

Residential

Thread Size: 

1/2" NPT (15 mm BSP)

Min Spacing: 

Per NFPA, FM

Max Spacing: 

20 x 20 ft (6,1 x 6,1 m)

Documents and Resources

Technical Data Sheets

Drawings

Approval Certificates