Underwater air/mixed gas exhaust system

摘要

An underwater exhaust system (90;100) is provided comprising an air regulator housing (94), an exhaust valve (26) operatively coupled to said air regulator housing (94), said exhaust valve (26) having a water interface side with a lower sealing edge (30) and an upper sealing edge (28), a bubble deflector (46,54; 102) adjacent said exhaust valve (26), said bubble deflector (46,54, 102) being coupled to said air regulator housing (94) and defining an air pocket (96) communicating with said water interface side of said exhaust valve (26), and at least one water inlet passage (92,93;104) formed in said bubble deflector (46,54; 102) at a lower level relative to said lower sealing edge (30) of said exhaust valve (26) to prevent free flow of fluid within the air regulator housing (94).