Pressure compensated anti-syphon, dripline
A pressure-compensating anti-siphon dripline not only delivers the right amount of water irrespective of the change in pressure or the terrain type but also prevents the suck-back when there is negative pressure in the drip line. You can buy products manufactured by NaanDanJain from here. Amnon PC AS type drip hose listed here can be used for several types of crops such as olives, cocoa, hazelnuts, coffee, almonds, pepper, and many more. You can find variants with flow rates of 1.1 and 1.6 litres/ hour. They can be bought in coils of different lengths available matching your requirements.