FIELD: irrigation systems. SUBSTANCE: fitted on head with conical deflector is cylindrical gate with hydraulic drive made in form of axially sliding casing which forms, together with nozzle and partition, two spaces. Each space is connected by control pipes with hydraulic distributor made in form of tubular housing with cylindrical spool valve and connected by lever with post of float. EFFECT: enhanced reliability of operation. 2 cl, 8 dwg
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