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Potter VSR Waterflow Switch with Retard for Fire Systems

Potter VSR Waterflow Switch with Retard for Fire Systems

Regular price $500.99 USD
Regular price $551.99 USD Sale price $500.99 USD
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The Potter VSR Waterflow Switch with Retard detects sustained water movement within commercial fire sprinkler piping, initiating rapid emergency alarms while preventing nuisance trips from pressure surges. Designed for seamless inline installation, this unit mounts directly into wet pipe, dry pipe, pre-action, and deluge suppression assemblies to ensure continuous life safety monitoring.

This waterflow switch satisfies the strict design and performance mandates of NFPA 13, 13D, 13R, and 72. Its adjustable pneumatic retard mechanism prevents false alarms caused by transient pressure fluctuations, ensuring the system activates only during verified emergency events.

Key Features & Construction

  • Sensitive Vane Detection: Accurately senses water flow rates starting at 10 gallons per minute (38 LPM).
  • Adjustable Retard Mechanism: Pneumatic retard adjusts from 0 to 90 seconds to filter out transient pressure surges.
  • Dual SPDT Switches: Equipped with two sets of single-pole, double-throw snap-action switches for independent alarm activation and auxiliary signaling.
  • Rugged Body Construction: Built with heavy-duty ductile iron and corrosion-resistant copper and CPVC components for demanding industrial and commercial environments.
  • System Versatility: Integrates smoothly across wet pipe, dry pipe, pre-action, and deluge sprinkler assemblies.

Technical Specifications & Compliance

Manufacturer / Brand Potter Electric Signal
Model / Series Number / SIN Potter VSR Series
Connection / Thread Size & Type Union fittings available
Material / Body Construction Ductile iron with copper and CPVC components
Agency Listings & Approvals UL Listed, FM Approved
Applicable NFPA Standards NFPA 13, NFPA 13D, NFPA 13R, NFPA 72

Verify all installation parameters with your local Authority Having Jurisdiction (AHJ) and review system design requirements prior to mounting.

Product Specifications: Potter VSR-CR Manufacturer Technical Data (PDF)

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