Gas cylinder pressure reducing valve has removable pressure gauge fitting inside filler coupling

摘要

A pressure reducing valve, consisting of a body (31) with a filler coupling (32), an axial orifice (42) and an inner bore (33), has a pressure gauge (3) fitted detachably inside the coupling. The pressure gauge has an outer housing (4) with a threaded section (46) to engage with a matching one in the coupling, and a projection to move the filling valve (48) away from its seat (49) when the gauge is inserted.