The following is taken from the Hunter PGP performance chart: • The flow rate increases as the nozzle size increases. To put it another way, the flow rate of a Number 1 nozzle is. A number 6 nozzle at the same pressure (206 KPA) has a flow rate of 7.4 LPM, whereas a number 6 nozzle at the same pressure (206 KPA) has a flow rate of 1.8 LPM.