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Ph: 916-331-0240
Drip Design Guide
Step 3. Emitter Placement Apply your selected emitters, microspray and tubing to your
planting layout. Don't worry about having too many emitters. The first objective of the irrigation system is
to get the plants properly watered, you will deal with the plumbing of the system later.
General Guide Lines
1. Design and plumb the system so than the black 1/2" (.710 O.D.) drip tubing carries no more than 4 gallons per minute with a starting pressure of 30 psi. Flows over 4 gpm create too much pressure loss in the tubing and the emitters put out uneven amounts of water.
2. A regular 3/4" valve will easily allow 8 gpm downstream. So you can have 2 lines of drip tubing, one to the left and one to the right, at 4 gpm with no problems.
3. Keep your 1/2" drip tubing runs to about 150 feet with equally spaced emitters. Longer runs are possible with proper design. For longer distances use 3/4" PVC pipe out to where the drip irrigation starts and then convert to 1/2" drip tube.
4. A maximum of 4 gpm through the 1/2 drip tube is equal to 240 one gallon per hour emitters.
5. Microsprays can be mixed with drip emitters but remember that they discharge more water per unit.
60 one gallon per hour emitters is equal to 1 gallon per minute.
10 fan bubblers at six gallons per hour each is equal to 1 gallon per minute.
1. Design and plumb the system so than the black 1/2" (.710 O.D.) drip tubing carries no more than 4 gallons per minute with a starting pressure of 30 psi. Flows over 4 gpm create too much pressure loss in the tubing and the emitters put out uneven amounts of water.
2. A regular 3/4" valve will easily allow 8 gpm downstream. So you can have 2 lines of drip tubing, one to the left and one to the right, at 4 gpm with no problems.
3. Keep your 1/2" drip tubing runs to about 150 feet with equally spaced emitters. Longer runs are possible with proper design. For longer distances use 3/4" PVC pipe out to where the drip irrigation starts and then convert to 1/2" drip tube.
4. A maximum of 4 gpm through the 1/2 drip tube is equal to 240 one gallon per hour emitters.
5. Microsprays can be mixed with drip emitters but remember that they discharge more water per unit.
60 one gallon per hour emitters is equal to 1 gallon per minute.
10 fan bubblers at six gallons per hour each is equal to 1 gallon per minute.
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