FIELD: machine building.
SUBSTANCE: here if disclosed low-temperature shut-off device for cryogenic medium consisting of case, of valve seat installed in case, and of shut-off gate controlling flow of medium through valve seat. The rotary shut-off gate is also installed in the case. Additionally, on the case there is at least one flange corresponding to a flange facilitating welded connection, particularly, butt welded connection, whereto the low temperature shut-off device in a pipeline is fastened. The case has an orifice for assembly and/or disassembly of the shut-off gate. Notably, the shut-off gate functionally is connected with a driven shaft installed in a support member closing the orifice in the case; the support member is fastened on the case with a split connection in the zone of the orifice of the case.
EFFECT: increased efficiency of shut-off device operation.
16 cl, 4 dwg
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