Drip irrigation for a 4 x 12 ft bed, rows 18 in apart
A 4 ft wide bed with drip line run along its length, rows 18 in apart, on its own valve with a filter and a pressure regulator.
Bed size
What is on your plan
- The drip layoutEvery row of drip line placed in the bed, the header and the valve.
- The parts listDrip line in feet, fittings, filter and regulator, staples.
- The flow checkWhat the zone draws against your water, and the run length limit.
- The scheduleMinutes a week for your row spacing, in cycles.
Checked before it is drawn
- The zone draws no more than three quarters of your water
- No run longer than the drip line can feed evenly
- Rows close enough that no strip of the bed stays dry
Measure your water first
A pressure gauge on the outside faucet for psi, and a 5 gallon bucket and a stopwatch for gpm. Pick the plan at or below what you measure, never above. How to measure.
At the parts counter
This system
Rain Bird XFD drip line, 12 in emitters, 100 ft0.9 gph emitters every 12 in, pressure compensating.Check the current priceThis system
Rain Bird PRS drip filter, 3/4 inFilters and drops the pressure to what drip line needs.Check the current priceEvery system
Rain Bird CP100 in-line valve, 1 inOne per zone, in a valve box near the house.Check the current priceEvery system
Rachio 3 smart sprinkler controller, 8-zoneRuns the schedule on the plan and skips watering when it rains.Check the current priceEvery system
10 in round valve boxes, 3 packCovers the valves at grade so you can reach them.Check the current priceEvery system
18/5 sprinkler wire, 50 ftFrom the controller to the valves: one wire per zone plus a common.Check the current price
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