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The maximum drip mainline run is determined by the flow rate, water pressure, the number of emitters on the line, and distance between the emitters. Our 700 tubing has a maximum flow rate of 240 gallons per hour. We recommend a 20psi or 30psi drip regulator.
For most residential drip irrigation systems using a hose bibb (faucet, spigot, hydrant) as the water supply, follow these guidelines:Maximum drip mainline run:500 ftMaximum emitter output: 240 gallons per hourSince a typical hose bibb delivers 240 gallons per hour, you can put 240 1 gallon-per-hour emitters on the line (or 480 1/2 gallon-per-hour emitters or 120 2 gallon-per-hour emitters).This works up to a point. If you run your drip poly tubing over 500 feet, there will be some pressure loss, limiting the number of emitters that you can install. For a maximum length run chart and more details read our tutorial on Installing Drip Tubing and Fittings.
The maximum run varies with the size of the tubing and the spacing of the emitters.
Buy Emitter Tubing
The number of emitters you can put on a single drip system varries with your available water flow, drip tubing size, and emitter water output. This tutorial will detail how many emitters you can put on a drip mainline.
Our Drip Tubing Maximum Run Chart(PDF) will help you compare different scenarios. The maximum pipe run will increase if you use low-output emitters (1/2 gallon-per-hour). Increasing pressure regulator size from a 20 psi regulator to a 30 psi regulator will also extend the distance that you can run drip main line.
We have a great selection of drip tubing coupling adapters for varying sizes of drip tubing. They are color coded. The first step is to determine the Outer Diameter (OD) of your tubing.Common OD dimensions are:.700 inches (called 700") Black fittings - 700 Compression Coupler.620 inches (called 620) Green-ringed fittings-700 x 620 Compression Adapter.710 inches (called 710) Blue-ringed fittings -700 x 710 Compression Adapter.580 inches (called 580) Yellow-ringed fittings - 700 x 580 Compression Adapter.455 inches called "455") Red-ringed fittings - 700 x 455 Compression Adapter
If you find that your existing tubing is not 700, simply add the appropriate coupling adapter to your order to go from your tubing to 700.
View our Installing Drip Tubing & Fittings tutorial for more details.
Buy 700 tubing here.
We do not recommend burying drip tubing in the soil. However, a layer of mulch on top will extend the lifespan of the drip tubing. Buy Drip tubing here.
You can combine drip emitters, adjustable drip sprayers, and drip micro sprays all on the same poly tubing (mainline) as long as your total gallon output does not exceed the flow rate available. Drip sprayers can use in excess of 30 gallons per hour so keep track of your water output when designing your drip system. For more details, check out these tutorials:
Choosing The Right Drip Emitter
How Many Emitters Can I Put On a Mainline?.
There are a few ways to go. Some options require digging down to supply lines and others involve swapping out parts above ground. For details and photos, please read our "Retrofiting Sprinklers for Drip Irrigation" tutorial.
Sprinkler irrigation systems are commonly used in lawn irrigation systems and other planted areas where a spray or mist is desirable. For plants that require uniform coverage of water (grass, ground cover, seeds) a sprinkler irrigation system is appropriate.
If you are installing lawn sprinkler irrigation systems, Irrigation Direct carries a variety of supplies and parts like an adjustable nozzles for Rain Bird sprinkler heads. Our shrub adapters are perfect for garden sprinklers and shrub zones.
Combine pop-ups and rotors with electronic sprinkler controllers (timers), and inline valves to automate your landscape sprinkler irrigation system. Browse our Sprinkler System Supplies and Parts to find sprinkler nozzles, bubblers, swing assemblies, cut-off risers, Marlex 90s, and more.
Drip irrigation is a watering method which delivers water to plants slowly and right where they need it at the roots. Where typical pop-up sprinklers spray water into the air and onto plants, drip irrigation systems combine flexible poly drip tubing and drip emitters or "drippers" to both conserve water and save money.
Drip irrigation systems are not affected by wind and will greatly reduce evaporation and runoff common with traditional irrigation systems. Drip irrigation is the perfect solution for raised vegetable garden beds, hanging baskets, and potted plants.
Learn how to plan, design, and install your own Drip Irrigation System with our FREE online Drip Irrigation Tutorials.