FIELD: cleaning pipes.
SUBSTANCE: device has housing with the discharging openings, inlet and accumulating chambers, and stepwise piston with the through passage. The piston is joined to the chambers through flexible sealing members and is mounted with a spaced relation to the chamber in the cross-section where the discharging opening are arranged. The area of the space is larger than the minimum area of the cross-section of the passage.
EFFECT: enhanced reliability.
1 cl, 1 dwg
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RU2299099C2 |
