An apparatus for capping bottles, comprising: gripping devices for bottles containing products, constrained to a
transporter, each of which gripping devices exhibits on a side thereof a gripping means of a corresponding
bottle, and on an opposite side thereof
hooking-receiving-stabilizing organ of a cap; at least a channel for supplying caps, arranged superiorly of the
transporter upstream of a capping zone overlying the
hooking-receiving-stabilizing organs transiting below the channel, into which a row of caps is conveyed, a head cap of the row of caps being held elastically by a lower end of the supply channel in order to position an internal surface of a relative head such as to intercept a front head (96a) of an underlying
hooking-receiving-stabilizing organ in order to enable the head cap, in combination with the advancing of the
transporter and with the striking and guiding action exerted by the supply channel, to disengage from the supply channel in order to locate in the corresponding hooking-receiving-stabilizing organ, with the relative body facing downwards; at least a pick-up organ, located in the capping zone, operating in
phase relation with a corresponding hooking-receiving-stabilizing organ, with the body thereof facing downwards; at least a pick-up organ destined to hook and extract the cap present therein, and to position the cap axially in an inlet mouth of the corresponding
bottle supported by the gripping device flanking the hooking-receiving-stabilizing organ, in order to perform
insertion of the body of the cap in the mouth of the
bottle in order to close the bottle.