BALL COCK Russian patent published in 1998 - IPC

FIELD: pipe fittings. SUBSTANCE: ball cock has body with branch pipes, ball plug arranged within body and rotated by drive shaft, seat rings, which are arranged concentrically with respect to branch pipe axes and may be biased to ball plugs. At least one seat ring is provided with sealing surfaces faced to ball plug and body. Edge is provided with additional sealing devices, such as lubricant and/or soft sealing parts, and annular groove cut in seat ring sealing surface faced to ball plug and positioned concentrically to branch pipe axes. Cock is further provided with control line of blow-through branch pipe. Control line is extending into annular groove of seat ring by means of channels made in body wall and seat ring wall through dividing cavity between body and seat ring. Body surface faced to sealing surface of seat ring is provided with additional annular channel arranged concentrically relative to branch pipe axes and connected with control line of blow-through branch pipe through additional channel. EFFECT: increased efficiency, provision for controlling cock sealing quality, reduced ecological loading due to gas outbursts. 17 cl, 3 dwg