The VIKING VK4621 Standard and QR Concealed Pendant Sprinkler represents a precision-engineered fire protection solution designed specifically for commercial and institutional building environments. Engineered to provide seamless fire suppression performance, this concealed pendant sprinkler integrates advanced thermal sensing technology with a discreet architectural profile, enabling effective fire mitigation without compromising aesthetic design.
Manufactured to exacting standards, the VK4621 provides reliable thermal activation and consistent water distribution across protected spaces. Its concealed design allows for smooth integration with suspended ceilings, making it ideal for high-end commercial settings such as office complexes, healthcare facilities, educational institutions, and hospitality environments where visual aesthetics and fire safety converge.
Professional installers will appreciate the robust engineering that ensures precise thermal response and consistent performance across diverse architectural configurations. The sprinkler’s quick response (QR) technology enables rapid thermal detection, significantly reducing potential fire propagation and minimizing potential property damage.
Key Features
- Concealed pendant design with standard temperature rating for broad commercial applications
- Quick response (QR) thermal element providing accelerated fire suppression capabilities
- Compatible with standard 1/2″ NPT sprinkler connections for simplified installation
- Corrosion-resistant brass construction ensuring long-term durability and reliability
- Compliant with NFPA 13 and UL 199 standards for comprehensive fire protection certification
- Designed for seamless integration with addressable fire alarm and suppression systems
Technical Specifications
- Temperature Rating: Standard (155-175°F)
- Activation Mechanism: Fusible link thermal element
- Connection Size: 1/2″ NPT
- Material: Brass with specialized thermal coating
- Listing: FM Approved, UL Listed
Recommended installation contexts include commercial office buildings, healthcare facilities, educational campuses, hospitality venues, and mission-critical infrastructure where reliable fire suppression is paramount. The VK4621 is engineered to interface seamlessly with modern addressable fire alarm panels and comprehensive building management systems.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 0.2 lbs |
|---|---|
| Dimensions | 2 × 2.5 × 3 in |
| Condition | New |
| Manufacturers | Life Safety |
| Part Type | Replacement Part |






