For reference a bladder could also be a pillow tank but a bladder may or may not be self supporting. The potential of a pillow tank with It really is self supporting design and style holds about 70% of what a rectangle would. IPI has labored with tank factories for https://www.facebook.com/permalink.php?story_fbid=pfbid02RghnLaVfMGMKegJXYTk8SxN13CqL7nDaMZ6UT5PevFZAxVAPZsPLZKdF1L5ncSoLl&id=61560512640678&__cft__[0]=AZX0bGk_Kp89pzCRxw8dZT39T9AaX9ewopjFBij5tF-9JxlnqMS-S5Ngld_7tCzIQvrt64bRox0pfIu28P3c-h0bNWHykbTTyL6I5LGYr-lvCQYxOUyq_fNCmmO5SKvTpbK6sHYUqHnxbF0uPbw_dCqVTGr6SHpac1Jv5xBu4P0UZ_ex4DNpWmFousqcwiDovOJSujSlSS1RuI5huENsIVTs&__tn__=%2CO%2CP-R