FIELD: equipment of manifolds of oil and gas wells; drilling and operation of oil and gas wells. SUBSTANCE: body of device consists of two coaxial interconnected parts which may be turned. Rotator is made in form of bush. Parts of body are secured by means of external casing and keys. Casing is provided with circular slot where control lever connected with rotator is located. Circular slot ensures turn of control lever through required angle. Fixed disk is secured in one part of body. Movable disk is fitted in rotator. Disks are movably connected with parts of body by means of inner bushes and are pressed by spring. EFFECT: enhanced reliability; reduced overall dimensions and mass. 2 dwg
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