Potter VSG-3 Waterflow Switch

Designed for early, reliable detection in wet-pipe and water-mist systems, the Potter Electric Signal, LLC VSG-3 waterflow switch alerts you to low-flow conditions before they escalate. The VSG-3 activates at just 3 GPM (11.4 LPM), giving fast notification of small discharges typical of mist systems or sectional flow events. An adjustable, field-replaceable 0–90 second electronic time delay reduces false alarms from transient flows and lets you tune response to your fire alarm strategy. Dual DPDT (form C) relay contacts simplify integration with fire alarm control panels, building management and security monitoring platforms, while weatherproof construction ensures dependable performance in mechanical rooms or exposed locations. Engineered to mount in 2"–4" stainless steel or brass pipe sections, the VSG-3 fits common system configurations and streamlines installation. Ideal for contractors, facility managers and security integrators who need precise, low-flow detection for sprinkler and water-mist applications. Specify the VSG-3 waterflow switch for dependable fire monitoring — contact your supplier to order or include it in your next fire protection design.

• Detects low flow (3 GPM) for early alarm in water-mist and wet-pipe systems to minimize damage and downtime
• Adjustable 0–90 second field-replaceable electronic retard to prevent nuisance alarms and match system response requirements
• Two DPDT (form C) contacts for simple integration with fire panels, building monitoring and security systems
• Fits 2"–4" stainless steel or brass pipe sections for flexible installation across common sprinkler and mist piping
• Weatherproof construction and clear terminal designations for reliable operation and faster maintenance in mechanical environments
• Backed by a 5-year limited warranty for long-term reliability and lower total cost of ownership