| 摘要 |
FIELD: investigating or analyzing materials. ^ SUBSTANCE: device comprises housing that receives rotatable plug provided with two openings positioned at an angle equal to the angle between the passages that are made in the housing and enter the pipe for sampling and discharging pipe. The housing also has opening for sampling and is provided with the orifice valve mounted in the vicinity of the base of the cylindrical chamber made in the housing and in part bounded with the rotatable plug. The device comprises piston mounted for permitting movement in the rotatable plug in the direction to and off the bottom. ^ EFFECT: expanded functional capabilities. ^ 10 cl, 5 dwg
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