Small Hose Washer, Connection Size 1 1/2 in, Connection Type NST, For Fitting Type Storz, For Maximum Hose Diameter 3 in, Product Type Hose Washers, Material Aluminum, Maximum Flow Rate 60 gpm, Features Simply Connect to a Fire Hydrant or Pumper, Very Effective in Cleaning All Types of Dirty and Caked Hoses, Maximum Operating Pressure 60 psi, Minimum Flow Rate 30 gpm, Minimum Operating Pressure 40 psi, Standards NFPA