The BlueWhite BWD30200P was made specifically for Pool and Sap applications. Flowmeters are installed after the filtration system in commercial pool applications. This enables the service person to tell at a glance if the recirculating pump is pushing an adequate amount of water to ensure water turnover. The 300 series flowmeters are in configurations for both horizontal and vertical mount installations in closed pipe systems. BlueWhites line of aquatic chemical feeders and flow meters helps pool and spa professionals provide a safe and sanitary environment for swimmers while complying with the regulatory requirements of municipal health departments. Features. This enables the service person to tell at a glance if the recirculating pump is pushing an adequate amount of water to ensure water turnover. The 300 series flowmeters are in configurations for both horizontal and vertical mount installations in closed pipe systemsSpecifications. Size 2 in.. Flow Range 40150 GPM / 150550 LPM. Dimension 21 x 3 x 15 in.. Plumbing Accessories Flow Meters