FIELD: mechanical engineering. SUBSTANCE: swivel includes inner and outer revolving members having respective inner passage for flow of fluid medium; they are communicated through one or several ring-shaped spaces on interface of swivel members. These spaces are sealed by means of respective seals. Members of swivel are made in form of outer female member and inner male member, respectively, thus making it possible to coaxially insert male member into female member to obtain effective working position or withdraw male member when it is necessary to uncouple swivel members. Sealing devices fitted between ring-shaped spaces are so positioned that they may be placed in effective operation and released when swivel members are to be uncoupled. EFFECT: enhanced reliability. 12 cl, 7 dwg
