The Blue-White F-30400T is a 4-inch variable-area tube flowmeter designed for reliable water flow measurement in closed piping systems. Part of the proven Blue-White F-300 Series, this mechanical flowmeter provides accurate, easy-to-read flow indication without requiring electrical power, making it ideal for pool, spa, HVAC, and water-treatment applications.
Constructed with a clear, corrosion-resistant acrylic body, the F-30400T mounts directly onto existing 4-inch pipe using a clamp-on design. This allows for fast installation without cutting or re-plumbing, while the rugged internal components ensure dependable long-term performance in commercial and light industrial environments.