Viking VK4921 – Standard Response Concealed Pendent Sprinkler (K5.6)

Sprinklers & Valves (Wet System)

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VK4921 – Standard Response Concealed Pendent Sprinkler (K5.6)

The VK4921 is a standard response concealed pendent sprinkler with a 5.6 K-Factor, featuring a low-profile cover plate for aesthetically clean ceiling installations.

Key Features

  • Concealed design with decorative cover plate

  • Standard Response operation

  • K-Factor 5.6 for general commercial use

  • Cover plate releases before activation

  • UL Listed & FM Approved

Download E-Brochure

  • Type: Concealed Pendent – Standard Response

  • K-Factor: 5.6 (80.6 metric)

  • Max Working Pressure: 175 psi

  • Temperature Rating: 135°F–200°F (cover plate ~135°F)

  • Materials: Brass body, stainless steel deflector

  • Cover Plate: White, Chrome, Custom options

  • Connection Size: 1/2″ NPT

  • Hotels

  • Apartments

  • Commercial offices

  • Retail shops

  • Modern interior spaces

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