indicated in fig5 a 5c with the same reference numerals but with an added suffix 34 c 34 apparatus 10c functions similar to apparatus 10 the major difference being the inclusion of annular ring 106 in annular space 108 axially intermediate sloping surfaces 40c and 42c and radially intermediate the sleeve 22c and upper housing 12c annular ring 106 has upper and lower radially sloping surfaces 110 and 112 respectively and is releasably secured by shear pins 114 against axial movement relative to the upper housing 12c as will be readily appreciated by consideration of the following description annular ring 106 permits the steps of closing the ports 32c and separating the housings 12c and 14c to be performed separately when the sleeve 22c is downwardly shifted as shown in fig5 b ports 32c are closed preventing fluid communication between the flow passage 26c and the wellbore external to the apparatus 10c in this configuration of the apparatus 10c sloping shoulder 40c on sleeve 22c is in contact with sloping shoulder 110 of annular ring 106 the ball seat 16c is expanded radially outward permitting the ball 56c to pass through the flow passage 26c plug 18c and ball 56c may be expelled from the sleeve 22c by creating a sufficient differential pressure across the plug to shear shear pins 36c however unlike apparatus 10 as shown in fig1 b the upper housing 12c may not be separated from the lower housing 14c with the apparatus 10c in the configuration shown in fig5 b because the collets 20c remain radially outwardly biased by outer diameter 62c on the sleeve 22c in order to separate upper housing 12c from lower housing 14c a second ball 116 is dropped or pumped down into the apparatus 10c the ball.