Beverage preparation apparatus adapted for preparing beverages by means of supply of a pressurized fluid by a fluid supply source so that flows through a single portion of edible substance precursor of a beverage, whereby said apparatus comprises: - a portion collection disposition arranged downstream of a fluid injection disposition provided stationary, and upstream of a beverage discharge disposition, and adapted for collection of said single portion in an open position, and for beverage discharge into said beverage discharge disposition in a closed position, - a first support structure provided stationary, presenting a first region, for example the posterior region or the base region, adapted for connection to said fluid supply source, and a second region, for example the frontal region, adapted for supporting said portion collection disposition; - a closing disposition comprising a closing element presenting an elongated form with a free edge and provided such that can be swiveled around a reference swivel axis, between an open position in which releases passage for introduction of said single portion into said portion collection disposition, and a closed position in which provides closing of said portion collection disposition in a liquid-tight manner, whereby said beverage discharge disposition is provided in a joint disposition with said closing disposition, without intercalary transmission of movement between each other, so that the swiveling movement of said closing element between respective initial and final positions, jointly provides the opening and closing movement of said portion collection disposition and fluid connection thereof with said beverage discharge, and characterized in that said first support structure comprises a distribution valve provided between a first fluid connection upstream and the fluid injection means to said portion collection disposition, whereby said distribution valve can be actuated by means of pressure upon an actuation element, for example by means of the pointing finger of the hand holding said envelope casing, so that releases the passage of fluid while said actuation element is actuated. - a portion collection disposition arranged downstream of a fluid injection disposition provided stationary, and upstream of a beverage discharge disposition, and adapted for collection of said single portion in an open position, and for beverage discharge into said beverage discharge disposition in a closed position, - a first support structure provided stationary, presenting a first region, for example the posterior region or the base region, adapted for connection to said fluid supply source, and a second region, for example the frontal region, adapted for supporting said portion collection disposition; - a closing disposition comprising a closing element presenting an elongated form with a free edge and provided such that can be swiveled around a reference swivel axis, between an open position in which releases passage for introduction of said single portion into said portion collection disposition, and a closed position in which provides closing of said portion collection disposition in a liquid-tight manner,