The F-30400P Blue White Flow Meter is well suited for closed pipe installation. Easy to read dual scale (GPM/LPM), screen printed on both sides of the meter body. F Series meters must be mounted at the vertical (twelve o'clock) position on horizontal pipe. One piece machined acrylic meter body. Corrosion resistant internal parts. Calibrated pitot tube. Ships with gasket seal and mounting clamps. Calibrated for use on PVC or Copper Pipe. Low Flow units offered.