the ring in place as the closure main body 54 is lifted upward by the unscrewing the relatively shallower angle of the edges 142 and 146 will hinder the transmission of torque between the closure main body 54 and ring 52 and will tend to jack the closure main body 54 off the ring 52 the result will be to sever the live hinge 50 and provide evidence of removal of the closure main body from the bottle such a hinged tamper evident ring may have one or more of several advantages relative to conventional tamper evident rings by at least partially decoupling the frangible severable connection e g the hinge 50 from the rotation transmitting connection e g principally the projections 56 and recesses 58 the ring may be much more easily severed this may increase the reliability of severing the ring when the closure is removed this is particularly relevant as both bottles and closures become more compliant e g use of softer materials and or thinning to reduce resource consumption also sensitivity to manufacturing variations may be reduced e g age and wear of molding dies may have a reduced influence on severability of the ring the closure assembly may also have a feature for evidencing an attempted opening of the closure assembly e g of the valve element 42 while the closure body 40 remains installed the exemplary valve element 42 is opened by a rotation relative to the closure body 40 about the axis 500 exemplary rotations are approximately 90 u00b0 in either direction such a rotation brings the channel 126 into alignment and communication with the ports 74 fig6 thus evidencing the rotation will evidence the opening to evidence the valve element rotation and opening the exemplary.