FIELD: measurement equipment.
SUBSTANCE: controlling device comprises a piston, which separates along the axis the second chamber from the third chamber, while being connected to an outlet hole of a measuring valve and including a connecting element made as capable of interaction with the valve element, the second spring placed in the third chamber, which applies the axial force to the piston, as a result of which there is a trend to retain the piston as disconnected from the valve element, the controlling device also includes a channel for connection of the second chamber with the third chamber.
EFFECT: increased reliability of a fuel flow meter.
15 cl, 8 dwg
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