Catalyzes the hydrolysis of inorganic pyrophosphate (PPi) forming two phosphate ions. Plays a role in intestinal development and subsequent normal secretory, digestive and absorption functions. Required for larval development. diphosphate + H2O = H(+) + 2 phosphate In intestinal cells, localizes around intestinal granules and vacuoles. Expressed in coelomocytes, the intestine and in the nervous system including the nerve cords and sensory neurons. Expressed from the embryonic stage of development to adulthood. Belongs to the PPase family.