The ileocecal valve (ileal papilla, ileocaecal valve, Tulp's valve, Tulpius valve, Bauhin's valve, ileocecal eminence, valve of Varolius or colic valve) is a sphincter muscle valve that separates the small intestine and the large intestine.he ileocecal valve is distinctive because it is the only site in the gastrointestinal tract that is used for Vitamin B12 and bile acid absorption.