Hydraulic diaphragm metering pump


  • 500AR series
  • Designed with an automatic air release valve to be used in sodium hypochlorite service
  • PVC head design minimizes internal space
  • All ports slope upward to vent gas through the top of the pump and away from the diaphragm
  • Can be specified on any Neptune series 500E pump with capacities as large as 9 gph