Breathing regulator

A breathing regulator apparatus for scuba diving, the apparatus of the type having an air inlet within a chamber formed within a housing, a mouthpiece extending from said housing in fluid communication with said chamber for inhalation of inlet air and exhalation of exhaust air and an exhaust valve located in one wall of said housing and having an outlet external said housing for directing exhaust air out of said chamber, the apparatus comprising:

• an exhaust-air-directing plenum extending laterally from said exhaust valve outlet to a pair of opposing outlet apertures and being integrally formed with a contiguous to an external surface of said housing for directing exhaust air laterally of said housing, said plenum having an inner wall surface and an outer wall surface, a portion of said outer wall surface of said plenum comprising a selectively removable cover overlying said exhaust valve located intermediate said pair of opposing outlet apertures for permitting access to said exhaust valve, said cover having means for being securely fastened to adjacent parts of said plenum, said plenum being made of the same material as said housing, said inner wall surface of said plenum separating said plenum from said chamber and forming a portion of said housing.