½” Drip Line

DIG’s Earthline Brown PC™ Drip Line consists of 100’ of drip tubing with a 1-GPH pressure compensating (PC) drip emitters built into the interior wall of the tubing every 18”. Each PC drip emitter consists of a cylinder with a labyrinth-like water passage, filter, and silicon diaphragm. Each PC drip emitter continuously adjusts to varying incoming water pressures ranging from 10 to 45 PSI, ensuring a constant flow rate regardless of any elevation along the line. In addition, the drip emitter’s self-flushing mode allows particles to pass harmlessly through, providing reliable performance and a longer life. Earthline Brown PC™ Drip Line can be used for all type of plantings, including groundcover, shrubs, loops around trees, for watering individual plants along the drip line, or for complete coverage of an area when multiple lines of drip line are placed with 16” to 24” between the lines. The drip line can also be used around a house foundation to reduce soil cracks. Earthline Brown PC™ Drip Line can be used above the ground and covered with mulch.


  • Use for groundcover, roses, shrubs, plantings in narrow areas, vegetable gardens, or looping around trees.
  • Use for commercial and residential applications
  • Flow regulated, self-flushing inline emitters deliver equal flow at a wide range of operating pressures and over a long length of drip line
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  • No special tools or glue are needed.
  • Reduced clogging due to large labyrinth water passage
  • Designed for placement in both new and existing landscape areas including green-roof areas
  • Ideal for installation on difficult terrain such as on slopes, in oddly shaped areas, and on windy sites
  • Available in 100' and 500' coils (500’ special order)
  • Clogging of the drip emitter is reduced due to the drip emitter's filter intake area being continuously flushed by the water flow
  • Flexible tubing for easy installation
  • DIG's drip irrigation products may be exempt from residential and commercial watering restrictions (check local codes).


½” Drip Line
how to order
Model Description
B18100 100 ft. Earthline Brown PC™ Dripline

Product specifications

  • Operating pressure range: 10 to 45 PSI
  • Recommended operating pressure: 25 PSI (use with model D46 25-PSI pressure regulator)
  • Flow rate: 1 GPH
  • Drip emitter spacing: every 18"
  • Drip line size: 100’ with .600 ID x .700 OD (500’ available by special order)
  • Maximum recommended run: up to 273’ @ 25 PSI or 369’ @ 45 PSI
  • Total flow rate for 100’ coil: 66.6 GPH (1.11 GPM) per 100’ at 10 to 45 PSI
  • Bending radius: minimum 2'
  • Each drip emitter has two (2) outlets
  • Color: brown
  • Filter requirement: minimum of 150 mesh
  • Material:
    • Drip tubing & drip emitters: polyethylene
    • Diaphragm: silicon
Maximum recommended length of single lateral PC drip line
Operating pressure in PSI 15 25 30 35 40 45
Drip emitters spacing 18" 18" 18" 18" 18" 18"
Drip emitter flow rate in GPH 1 1 1 1 1 1
Maximum Length in feet 171 273 303 327 348 369
Flow rate in GPM 1.90 3.03 3.37 3.63 3.87 4.10
Flow rate in GPH 114 182 202 218 232 246
# of drip emitters 114 182 202 218 232 246
Velocity (f/s) 1.58 3.44 3.83 4.12 4.39 4.65
Head loss in PSI 4.91 15.1 19.73 23.97 28.28 32.89

Note: This information is based on 0% slope

how to use

½” Drip Line


DIG’s Earthline Brown PC™ Drip Line delivers constant deep watering directly to the plant roots. The flow uniformity from each drip emitter provides efficient watering over the length of the drip line used. Earthline Brown PC™ Drip Line can be used in a wide range of layouts to accommodate most gardening watering requirements. The 100’ coil of Earthline Brown PC™ Drip Line has 1-GPH (gallons per hour) pressure-compensating inline drip emitters inserted into the inner side of the drip tubing every 18”.
For commercial and residential applications, install this drip line above the ground and if desired cover with mulch to blend with the landscape. The drip line is ideal for plantings in preset spacing, in narrow plantings, for closely spaced plants in rows, as well as for hedges, groundcover, shrubs, and roses. It can also be used around trees by looping a few rounds of drip line and connecting it to the drip tubing. An additional use of the drip line is to reduce cracking of house foundations by laying the drip line around the house. This drip line can be expanded by connecting the coils together for lengths of up to 369’ @ 45 PSI.

The drip line can be used as part of a drip irrigation installation or a system with drip line only. The drip line can be extended from the ½” drip tubing using compression fittings with .700 OD or DIG’s brown ½” barbed fittings.

Keeping the house foundation at a constant moisture level in areas with extreme weather changes

With changes in weather pattern, the soils have an incredible capacity to absorb and lose water. This means that the soil will expand when it is very wet and it will decrease when it is very dry. This creates significant stresses on the house concrete slab which is built on top of the soil. Keeping the soil around the house foundation at a constant moisture level using a drip line will help reduce the chances of needing house leveling in the future

Installation suggestions:

Basic installation recommendations for this product include first reviewing the area and then making a drawing of the garden or site with your preferred layout.
If automation is required, use one of DIG’s hose end timers or battery operated controllers. The ideal controller should have flexible scheduling and two to four start times per day for added flexibility.

Start the installation from a PVC pipe or to pipe thread

  1. If the drip system installation is started from a PVC pipe, first shut off the main water supply.
  2. If an automated system is preferred, we recommend installing a 3/4” ball valve or gate valve before the battery operated controller or AC valve, if used. This ball valve can be very useful as an emergency backup to turn the system off. This type of arrangement is used by professional installers.
  3. Turn the water supply on to flush the line and then shut the water supply off using the new ball or gate valve.
  4. Install an AC valve or battery operated controller, wrapping TEFLON tape on all the male thread fittings used.
  5. Turn the water supply on again to pressurize the system. The unit will open momentarily and then will shut off.
  6. Test the valve or the battery operated controller and make sure that valve or battery operated controller are working correctly. If using a battery operated controller then program the controller.
  7. After the AC valve or battery operated controller add a ¾” screen filter with 155-mesh (model D55). The screen filter is used to protect the drip system. Then add a preset 25 PSI pressure regulator (model D46P) or adjustable pressure regulator (model PRV075). The pressure regulator is used to lower the pressure to the normal operating pressure for a drip system. Follow with a ¾” swivel adapter (model 50001) to the drip tubing or ¾” PVC threaded x slip adapter to the PVC line.

Start the installation from a faucet or hose thread

  1. If an automated system is preferred, install a hose end timer.
  2. Test the hose end timer and make sure that is working correctly, then program the timer. To the hose end timer add a backflow device (model D45), then a 25 PSI pressure regulator (model D46) and then a 3/4" swivel adapter with screen (model C34). If water quality is a concern, we highly recommending using our fine mesh 3/4" filter with 155-mesh (model D57A).

Drip line installation

  1. Use the ½” drip tubing as the main lateral and lay the drip tubing per your drawing, securing the drip tubing using the stakes (model R60). Use the stake holders to secure the drip tubing or drip line to the ground in key areas and add more stakes as you unroll the drip tubing or drip line. Add stakes every 6-12’ and at the end of each section or as needed.
  2. Throughout the installation add ½” fittings if needed such as tees (model C35) and elbows (model C36) per your drawing layout, leaving the end of the drip tubing open. To install the 1/2" drip fittings, cut the drip tubing with a hand pruner, being careful to keep dirt from entering the line. Hold the fitting in one hand and the drip tubing or drip line in the other and force the drip tubing or drip line into the fitting by wiggling it from side to side.
  3. Use the ½” drip tubing as the main lateral and connect the 1/2” drip line to the ½” drip tubing per your layout configuration. To do so, cut the ½” drip tubing and add a ½” compression or barbed tee.
  4. Onto the barb or tee insert the drip line. If only one length of drip line is installed, the coils can be connected together to a maximum distance of 386’.
  5. Lay the drip line along the planting area or loop the drip line around a tree and secure it to the ground using the stakes (model R60).
  6. Turn the water on and flush the line.
  7. Close the end of the 1/2” drip tubing using the hose end (model Q58) or figure “8” (model F68B) and then close the end of the ½” drip line using the same hose end configuration.
  8. Pressure-test the system to identify leaks in the drip tubing laterals, fittings, and drip line and then program the timer or controller.

About the soil and suggested watering intervals:

  • Sandy soil or light textured soil: Water percolates straight through before it can spread far enough horizontally, so apply water at close intervals such as every other day for 20 to 90 minutes depending on plant size and type, daylight conditions (full sun, partial sun or shaded), and weather pattern (cold to hot) with the plants under full sun in hot conditions getting the longer period.
  • Loamy soil or medium textured soil: This is the ideal soil condition with water moving slowly and spreading evenly, so apply water at wider intervals such as every two to four days for 15 to 90 minutes depending on plant size, type, daylight conditions (full sun, partial sun or shaded), and weather pattern (cold to hot) with the plants under full sun in hot conditions getting the longer period.
  • Clay soil or heavy textured soil: Water is absorbed very slowly, so apply water at longer intervals such as every three to five days for 30 to 60 minutes depending on flow rate, plant size and type, daylight conditions (full sun, partial sun or shaded), and weather pattern (cold to hot) with the plants under full sun in hot condition getting the longer period.

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