Netafim Irrigation India Private Limited offers Open Tank Fertilizer Dosing System. Netafim Irrigation India Private Limited is an ISO 9001:2000 certified company. Open Tank Fertilizer Dosing System models are equipped with stainless steel Grundfos pumps. The dosing channels in these units are based on a precise, efficient Venturi injector, with no moving parts. For control, it employs unique action valves, developed especially for control purposes in the chemical industry.