indicated by arrows 60 in fig1 will cause flange 56 of bag 44 to press downwardly against flange 46 of basket 40 thereby firmly positioning the basket within housing 12 so that the liquid first enters the interior of bag 44 from filter inlet port 28 and thereafter passes through previous filtering wall part 50 of the bag and openings 62 in basket 40 and out outlet port 30 ring part 52 of bag 44 includes a pair of tabs 64 which are integrally formed to flange 56 of the bag tabs 64 when pulled outwardly as shown by arrow 57 in fig4 with cap 22 removed from the filter cause flange 56 to be flexed and cammed inwardly and pulled from engagement with housing flange 38 to release the bag from the filter for purpose of replacement or cleaning wall part 50 of the bag will usually adhere to basket 40 during initial efforts to remove it from the filter this bag basket adherence causes the basket to move toward opening 18 in housing 12 until basket stops 48 engage the inner edge 35 of housing shoulder 34 where further outward movement of the basket is prevented as bag 44 is pulled from the basket in fig7 and 8 a modified form of the filter shown in fig1 6 is illustrated in this embodiment.