It is Huernia pendula a stapeliad. Sometimes called a bell flower sometimes referred to as an orchid of the succulent world. It's part of the apocynaceae family the same family that has carrion flowers in it - This one doesn't smell.
Up close and looking up into the flower. It flowers for a long time each year and is now growing quite large. it's flowers tend to go unnoticed when they hang down.
I hope it is happy in it's new larger prettier pot.