T-Tape Drip Tape Irrigation

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Drip Tape

Drip Irrigation Information

What mil drip tape should I use?

6 Mil drip tape - Recommended for experienced growers only. Used for short season crops that are not under plastic mulch. Minimal insect resistance.

8 Mil drip tape - Is widely used throughout USA for basically all vegetable crops, under plastic mulch or along rows.

10 Mil drip tape - Is ised in heavy rocky soils and where insects and wire worms are a problem. Also used for over winter crops like straeberries.

15 Mil drip tape - Can be used for multi-year crops, including brambles and vineyards.

20 & 25 Mil drip tape - Is used in orchards, vineyards, etc. Has multi-year use.

Why so many flow rates?

  • Row length will determine flow rate, zone size, or field size.
  • Flow rates are also used to main lines, pump size, or water available
  • Fields with row length over 500 Ft. require "low flow" drip lines or special larger diameter drip lines.
  • Large diameter model #700 "low flow" will go up to 1500' row length. See T-Tape "length of run"
  • A more even distribution is achieved with low flow drip tape and larger zones.

How do I know how much water I need?

The standard flow drip tape is .45 Gpm at 8 Psi. This flow is per 100 feet of row, Multiply linear feet of drip tape by flow rate. Example: 5000 feet of drip tape X .0045 flow = 22.5 Gpm pump flow requirement. Drip tape requires low pressure, only 8 to 15 Psi. needed at the head lines, this will give approx. 10 Psi. in the drip lines.

How do I maintain 10 PSI?

Drip line pressure is maintained with a pressure regulator in the head line. Also a pressure gauge is needed there to assure the pressure is 8 to 15 Psi. before entering the drip lines. Pump pressure must be higher.

Why is a filter needed?

Water in the drip lines lead through a small turbulent channel to make each dripper drip the same amount of water. Unfiltered water may clog these channels. Also well water must be filtered. Your water source will determine the kind of filter needed. No filter needed for town or city water.