FIELD: drilling equipment, particularly devices for assembled blowout equipment pressure-testing.
SUBSTANCE: device comprises shaft with central channel and elastic packing member installed on the shaft. Connected to lower shaft end is lower sub provided with radial channel. Shaft has central part shaped as truncated cone. Elastic packing member is installed on the shaft so that it may slide in axial direction. Upper part of packing member is made as two collars facing upwards. Diameter of upper end of lower sub exceeds that of lower cone base.
EFFECT: increased operational reliability of the device.
1 dwg
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