Flow Monitors

John Blue Flow Monitors are perfect for monitoring flow rates when spraying or applying agricultural liquid fertilizer. The VisaGage II is cost effective and simple to install in single columns or in sets of four flow meter assemblies. In addition, most John Blue Flow Monitor parts are interchangeable with other brands already on the market today.

John Blue VisaGage II is manufactured with chemical resistant polypropylene adapters and clear PVC body with an additive for UV protection. Viton o-rings are also standard. There are no electronic parts that could potentially fail.

Proper Application = Increased Yields

With the John Blue VisaGage II you will know immediately if an outlet is plugged, thus causing possible variations in your application rates. It's so easy - see the balls in line and know your rate is uniform.

When the ball is lower you know there is a restriction at the outlet, hose or opener supplied by that flow monitor. A ball higher than the others is an indication that hoses or fittings supplied by that specific flow monitor is broken or has a leak.

Standard Liquid VisaGage Units are manufactured with chemical resistant polypropylene adapters, Viton O-Rings and clear PVC bodies with an additive for UV protection.