Dig ST100AS Drip & Soaker Tape Vegetable Watering Kit Drip tape drip emitters flow rate: .4 gallons per hour (GPH) 15 PSI, .47 gallons per hour (GPH) 20 PSI and .5 gallons per hour (GPH) 25 PSI Total flow rate for this kit: 50 GPH (.83 GPM) 25 PSI Operating pressure: 10 to 25 PSI (pressure regulator not included) Maximum recommended flow rate 25 PSI: 220 GPH (3.6 GPM) Drip tape length: 100feet of 15 mil with .634 ID x .664 OD, Drip tubing lenght: 5feet of 1/2inch with .600 ID x .700 OD, Drip emitters spacing: 12Inch Maximum length of layout per row: 280feet