Abstract: An improved exhalation evacuator (15) having a mask (16) with an inhalation portion (18) and an exhalation portion (19), a delivery conduit (20) communicating with the mask, a return conduit (21) communicating with the mask, the delivery conduit having a supply end (22) and an inlet end (23), the inlet end having an inlet gas passageway (24) and a first connect port (25), the return conduit having an outlet end (26) and an exhaust end (28), the outlet end having an exhaust gas passageway (29) and a second connect port (30), the gas passageway of the delivery conduit communicating with the inhalation portion, the gas passageway of the return conduit communicating with the exhalation portion, the first connect port engaging the exhalation portion, the second connect port engaging the inhalation portion, the first and second connect ports not having a passageway allowing gas to move between the mask and the delivery and return conduits, respectively, the gas inlet passageway and first connect port having an inve