VK4921 K5.6 SR PD CD Concealed Pendent Sprinkler

The Viking VK4921 K5.6 SR PD CD Concealed Pendent Sprinkler installs within commercial and residential wet pipe fire suppression systems to provide reliable, low-profile fire control. Engineered with a concealed pendent design, it sits flush against finished ceilings to preserve architectural aesthetics in offices, hotels, and multi-family residential structures while maintaining immediate deployment capability during early-stage fires.

This sprinkler complies strictly with NFPA 13 installation requirements for standard response wet pipe assemblies. Its UL listing and FM approval satisfy mandated building code criteria and streamline local inspection approvals for fire protection contractors and facility managers.

• Ductile Iron Construction: Built from robust ductile iron to provide high mechanical strength and long-term corrosion resistance in demanding building environments.
• Concealed Pendent Configuration: Features a compact, flush-mount profile that integrates seamlessly into finished ceilings without protruding into the interior space.
• K5.6 Orifice: Calibrated to deliver consistent, regulated water distribution patterns for efficient suppression performance.
• Standard Response Operation: Utilizes standard response thermal activation to reliably control developing fire threats.

Always verify local Authority Having Jurisdiction (AHJ) mandates and consult the manufacturer technical data sheets for specific spacing, obstruction, and installation parameters prior to system layout and assembly.

Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)