The Digiflow 8000T Water Flow Meter With 3/8" Female NPT Connection is a water flow meter with a capacity of 99,500 liters or 19,900 gallons. It helps in assessing the filter maintenance schedule. The meter gathers measurements in an easy-to-read meter. It tells the number of days, flow rate, and gallons. The meter has a 3/8? Female NPT Connection. The filter elapse time monitor is up to 720 days. The flow rate display is 0.95 ? 13.2 lpm or 0.25 ? 3.5 gpm. It is fitted with an alarm that informs just before the elapse of filter life along with low battery. The operating pressure is 7-98 psi and the operating temperature is 40-104? F.