Balanced pressure reducer for respiration equipment has valve seat made from at least two materials with different degrees of rigidity

摘要

#CMT# #/CMT# The pressure reducer, comprising a body (7) with a highpressure inlet (10) and a low-pressure outlet (11) separated by a valve (1) that is closed by interacting with a seat (6), has the valve seat made from at least two materials with different degrees of rigidity, with the less rigid material forming the contact zone for the valve when closed. The valve seat consists of a bush (61) of a rigid synthetic material, with one end (62) covered by a less rigid material, e.g. by overmoulding. #CMT#USE : #/CMT# Balanced pressure reducer, especially for gases at high or very high pressure in respiration equipment. #CMT#ADVANTAGE : #/CMT# The pressure reducer is simple in design, inexpensive to manufacture and assemble, and is efficient in operation. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a vertical section through the pressure reducer. 1 : Valve 6 : Seat 7 : Body 10 : Inlet 11 : Outlet 61 : Bush 62 : Covered end #CMT#POLYMERS : #/CMT# The less rigid synthetic material layer on the valve seat is e.g. a liquid crystal polymer, a polysulfone or polyarylamide.