FIELD: materials handling facilities; delivery of solid material into closed space at preset speed. SUBSTANCE: set has hopper for materials, pipe for delivering material into closed space and device for holding material and regulating its consumption. This device includes bell for overlapping discharge hole and central rate control plunger made elongated and considerably thinner than bell. Bell and central measuring plunger can move relative to each other to provided easy control of distance separating these two members. EFFECT: reduced overall dimensions, provision of reliable operation. 10 cl, 7 dwg
