Viking VK601 K5.6 Quick Response Extended Coverage Fusible Link Sprinkler
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The Viking VK601 K5.6 Quick Response Extended Coverage Fusible Link Sprinkler is a pendent fire sprinkler engineered for commercial and light hazard environments such as offices, retail spaces, and warehouses. It installs in wet or dry commercial fire suppression piping assemblies to provide efficient, downward water distribution across open spaces.
This unit fully conforms to NFPA 13 standards, satisfying code requirements for extended coverage fire protection systems while maintaining rigorous compliance with commercial life safety regulations.
Key Features & Construction
- Extended Coverage Design: Features a precisely engineered deflector that distributes water across a larger area, decreasing the number of sprinklers required for effective fire protection in open spaces.
- Quick Response Activation: Utilizes a thermosensitive fusible link mechanism that triggers rapid sprinkler release upon detecting heat, ensuring early fire suppression and enhanced safety.
- Durable Construction: Made from corrosion-resistant brass with a robust finish, providing reliable performance in various environmental conditions.
- Standard Connection: Equipped with a 1/2” NPT threaded connection, allowing straightforward integration into fire protection systems.
- Pendent Design: Optimized for ceiling installation, this sprinkler provides downward water distribution to maximize fire suppression efficiency while keeping a low-profile appearance.
Technical Specifications & Compliance Table
| Manufacturer / Brand | Viking |
| Model / Series Number / SIN | VK601 |
| Connection / Thread Size & Type | 1/2” NPT |
| Pressure Rating (WWP / Max Working Pressure) | N/A |
| K-Factor | 5.6 |
| Temperature Rating / Response Type | Quick Response |
| Material / Body Construction | Corrosion-Resistant Brass |
| Agency Listings & Approvals | UL Listed, FM Approved |
| Applicable NFPA Standards | NFPA 13 |
Contractors must verify local Authority Having Jurisdiction (AHJ) requirements and consult manufacturer technical data sheets before installation.
Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)
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