VK558 K5.6 Quick Response Upright Intermediate Sprinkler
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The Viking VK558 K5.6 Quick Response Upright Intermediate Sprinkler is engineered for commercial and industrial in-rack fire protection systems. Installed within complex, high-density storage and racking environments, this sprinkler integrates directly into water suppression assemblies to safeguard critical zones from rapid fire spread.
This component satisfies commercial life safety demands by meeting stringent NFPA installation codes. It features a glass bulb heat sensor that activates rapidly upon detecting thermal changes, ensuring immediate suppression in densely packed storage layouts where traditional overhead sprinklers are insufficient.
Key Features & Construction
- Quick Response Technology: Glass bulb heat sensor activates rapidly upon detecting heat to limit fire spread.
- Durable Construction: Premium metal alloys provide mechanical strength and corrosion resistance.
- Optimized Flow: K5.6 orifice size delivers efficient water distribution tailored for dense rack storage.
- Versatile Installation: Supports upright or pendent mounting configurations with or without protective shields.
- Regulatory Compliance: UL Listed and FM Approved to meet commercial and industrial safety standards.
Technical Specifications & Compliance Table
| Technical Field | Specification |
|---|---|
| Manufacturer / Brand | Viking |
| Model / Series Number / SIN | VK558 (SIN VK558) |
| Connection / Thread Size & Type | N/A |
| Pressure Rating (WWP) | N/A |
| K-Factor | 5.6 |
| Temperature Rating / Response Type | Quick Response |
| Material / Body Construction | Premium Metal Alloys |
| Agency Listings & Approvals | UL Listed, FM Approved |
| Applicable NFPA Standards | NFPA 13 |
Verify all local Authority Having Jurisdiction (AHJ) requirements and consult manufacturer technical data sheets prior to system layout and installation.
Documentation: Download Manufacturer Technical Data & Cut Sheet (PDF)
| Item Number | 12281-1 |
|---|---|
| Brand | Viking |
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