The 180° and the 360° Adjustable Stream Drip Emitters have a flow range of 0 to 15.7 GPH at a preset pressure of 30 PSI. When the cap is rotated the Adjustable Stream Drip Emitter’s flow and the radius of the wetted area change from drip to a gentle stream pattern to off. This feature allows the user to adjust the flow to each individual plant as needed. Rotating the cap towards the "+" or the "-" signs allows the user to increase or decrease the flow rate. Our adjustable drip emitters come with 6" spike and 1/4" side barb inlet or with 1/4" barb inlet only. The ideal use for Adjustable Stream Drip Emitters is for a group of plants or under a large individual plant.
The Adjustable Stream Drip Emitters may be installed using one of two methods; either directly into the drip tubing or at the end of the micro tubing with each head placed under the plant canopy, at the center between the plant trunk and the plant canopy edge. The 6” Adjustable Stream Drip Emitter with stake is ideal for extending from the main supply line or drip line, and mounted about 5” above ground for good visibility. The Adjustable Stream Drip Emitter with ¼” barb may be mounted directly into the drip tubing. One of the most common installation errors is using too few emitters, poorly spaced. All too often only a single emitter is placed at the base of a newly planted tree or shrub. In clay soils a single drip emitter can wet a three to four foot diameter; on sandy soils, the same layout using the same drip emitter will only wet an area less than one foot in diameter. Given the fact that plant roots can grow up to a few feet a year depending on the plant and location, after one year the diameter of the root system could be much larger than the area covered by the emitter. A single emitter per tree or shrub could restrict root development as early as the first year after planting if flow is not adjusted.
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
- If the system installation is started from a PVC pipe, first shut off the main water supply.
- 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.
- Turn the water supply on to flush the line and then shut the water supply off using the new ball or gate valve.
- Install an AC valve or battery operated controller, wrapping TEFLON tape on all the male thread fittings used.
- Turn the water supply on again to pressurize the system. The unit will open momentarily and then will shut off.
- Test the valve or the battery operated controller and make sure that the valve or battery operated controller is working correctly.
- 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 suggested 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
- If an automated system is preferred, install one of DIG’s hose end timers.
- Test the hose end timer and make sure that is working correctly.
- 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).
- Using the drip tubing as the main lateral or as a sub lateral, lay out the drip tubing per your layout drawing. Secure the drip tubing to the ground using stakes (model R60) in key areas and add more stakes as you unroll the drip tubing. Add stakes every 20-30’ and at the end of each section or as needed. An extra 1% of drip tubing length should be added to each lateral to compensate for contraction at low temperature.
- Throughout the installation and per your drawing layout, add if needed ½” fittings, such as tees (model C35) and elbows (model C36), leaving the end of the drip tubing open. To install the 1/2" compression 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 in the other and force the drip tubing into the compression fitting by wiggling it from side to side.
- The Adjustable Stream Drip Emitters are installed along the drip tubing at varying or at specific intervals. The distribution uniformity of water from the micro sprayers along the line depends on the incoming pressure, number of Adjustable Stream Drip Emitters used per lateral, and the length of the laterals. Special care should be taken to ensure high uniformity of water along the laterals by not exceeding the product recommendations (see chart).
- To install the Adjustable Stream Drip Emitter with ¼” barb, punch a hole into the drip tubing using the small punch (model D44) or the gun punch (model 16-035), and snap the ¼” barb into the drip tubing. To install the Adjustable Stream Drip Emitter on a stake cut a length of 2 to 4’ feet (we highly recommended not exceeding 4 feet) ¼” micro tubing (model B38 for 50’ and B38100 for 100’, with both made of vinyl material, or B38P for 50’ and B38100B for 100’, with both made of poly). To the micro tubing end insert the extra barb included with the Adjustable Stream Drip Emitter or a ¼” barb (model H80A for pack of 10 and model H80B for pack of 50). To the other end of the micro tubing insert the Adjustable Stream Drip Emitter barb and insert the stake to the ground, keeping the Adjustable Stream Drip Emitter head at a minimum of 4” to 5” above ground for best coverage. Punch a hole into the drip tubing using the small punch (model D44) or the gun punch (model 16-035), and snap the ¼” barb at the end of the micro tubing into the drip tubing.
- Turn the water on and flush the line.
- Close the end of the drip tubing using the hose end (model Q58) or figure “8” (model F68B).
- Pressure-test the system to identify leaks in the drip tubing laterals, fittings, and micro tubing and then program the hose end timer or battery operated controller.
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