A flow controller includes a housing having central portion and finger-gripping portions on either side of the central portion. The housing defines an interior flow path and includes a breakable member at least partially positioned within the interior flow path of the housing to prevent the passage of fluid through the flow path. The breakable member includes a stem integrally molded to a tubular member. The finger-gripping portions and the central portion define an outermost surface and the outermost surface of the finger gripping portions extends radially outwardly of the outermost surface of the central portion. The central portion includes a wall having a selected thickness.