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Drip Irrigation Design Manual

Design guide 1)  Introduction 2) Advantages & benefits 3) Design criteria 4) Site survey  5) Determining soil types

6) Overview of system requirements

Installation of TOP 12 outlet drip head

Technical Specifications

TOP specification  Lay out using 1/4" distribution tubing above grade  Lay out using 1/8" distribution tubing above grade  Lay out using 1/8'" distribution tubing below grade

T.O.P 12 outlet drip head technical information

Maximum number of TOP on 1" PVC pipe schedule 40 TOP: flow rate verses pressure  Maximum number of TOP on 3/4" PVC pipe schedule 40  Parts list     Distribution tubing head loss

Method of installing TOP 12 outlet drip head

Below grade installation inside 6" irrigation box

If it is feasible, excavate the entire area, 4" to 6" deep, for the layout of the distribution micro tube. If not, dig a 4" to 6" deep trench to each plant, planting all trees, shrubs and flowers first. Plant all trees, shrubs and flowers. Install control wires and lay them to the sides or below the main line. Install remote control valve or battery operated controller with a filter and pressure regulator below grade. See overview of system requirements Lay out the lateral line and connect it to the electric remote control valve or battery operated controller. Cap off, flush and test lateral line. Install all 1/2" risers 6' to 8' apart. Cap off, flush and test lateral line and 1/2" risers. Place TOP 12 outlet drip heads and remove their covers (see detail). Lay out the distribution micro tubes to the plants (see detail for number of outlets per plant). We recommend a maximum length of 8'. When plants mature, they may require more water. Watering times can be lengthened to meet those needs, but generally, more outlets should be added to supply the maturing plant. Also, new plants may be added to the landscape. We recommend leaving 2 to 4 of the 12 outlets on each TOP unused by using model 10-015 caps to cap each one. Cover TOP 12 outlet and hand tight the cover Use stake model 16-016 to hold the distribution micro tubing to the ground, and a bug plug to close the end of the distribution micro tube. Use bug plug model 10-016 for 1/8" distribution micro tube or model 10-0xx for 1/4". Install air/vacuum relief valve inside 6" irrigation box at the highest elevation point within the lateral. Install a flush valve or ball valve inside 6" irrigation box at the end of the lateral. Flush and test the entire system and check all connections and TOP 12 outlet for leaks. Inspect and replace leaking and damaged parts. Test the system with continuous pressure for two hours. Cover the entire area to a finish grade with 2" to 4" of mulch. Instruct personnel on the proper operation and maintenance.