Multiple drip-jet™ systems can operate off a single water source simultaneously with minimal loss in water pressure due to the low draw rates from each one.

Sprinklers or Drippers

The drip-jet™ system can be outfitted with many readily available types of sprinkler heads to fit your application.

It can also mount lines of drippers with drip rates well below 1/25 GPH. The ultra-low discharge rates are due to the intermittent pulses that allow for larger orifice size drippers to be used which will eliminate clogging problems.

It is recommended that LPD check valves (leak prevention devices) be fitted at each water distribution point to eliminate refill and drainage effects and ensure even distribution of water down the line. Make sure you set the opening and closing working pressures of your drip-jet™ system to be above the opening and closing pressures of the LPDs:

Here is one LPD option when using large sprinklers.

Here is one LPD option when using micro-sprinklers.

For drip irrigation Rainbird® offers driplines with internal LPD check valves. Also, Netafim® offers "WPCJ" individual drippers with internal LPD check valves (opening pressure 10 psi and closing pressure 2.5 psi) that can be readily barbed into your distributor lines. However, when buying "WPCJ" drippers in quantity they can be acquired at a much cheaper price here.

Water Line

The drip-jet™ system comes ready to connect to your garden hose. You can also use small tubing in place of garden hose because of the low input flow rates the drip-jet™ system typically operates at. Select strong tubing that conforms with the water pressure coming off your water source. A good choice is polyethylene 1/4" tubing, the kind used for outdoor evaporative coolers. Another good choice is Parker Parflex® black polyethylene tubing with UV inhibitors for outdoor use.

Flow Control

For close water management you can use the split time stopwatch feature on your digital watch to give you an accurate estimate of water output for each individual watering device you are using with your drip-jet™ system. Time the pulse duration in seconds and divide that number by the cycle period and then multiply that quantity by the nominal flow capacity to give you the water output on that particular device. For example, if the pulse duration coming from the drip-jet™ system lasts for 5 seconds and the pulses come every 65 seconds, then for a 2 GPH dripper the calculation is: (5 seconds / 65 seconds) x 2GPH = 0.154 GPH of output.

Using small tubing instead of garden hose can be used to regulate your inlet feed flow rates going into the drip-jet™ system to offer finer tuning but at lower overall flow feed rates than with the drip flow controllers shown in the above picture which are expressly used with garden hose to provide higher overall feed rates. With 1/4" tubing the easiest method is to simply constrict the tubing with a mini C-clamp to easily increase or decrease the inlet flow feed rate you want. Clamping the tubing can offer the same precision as a needle valve. You can add a protective cover to the tubing at the point of clamping by sleeving a segment of larger tubing over it.

An easy-to-make elegant clamp can also be used with your 1/4" tubing, drill a 1/4" transverse hole through the middle of a short 1/2" diameter brass threaded shaft section. Thread your 1/4" tubing through this hole. Now screw on two opposing 1/2" nylon wing nuts to clamp the tubing.

Adjusting Your Working Pressure

The drip-jet™ system works passively off your water pressure and has a pressure reducer built into it. To adjust your working pressure up or down simply add or remove some of the magnets from the top stack array. This will add or reduce the releasing discharge pressure that goes out to your watering devices.