Patent ID: 6086039
Filing Date: 2000-07-11
Classification: F16K

Abstract:
A poppet and seat assembly for use in a fluid handling device comprising:a poppet comprising:a circular imperforate head portion at one poppet end and having an opposite end adapted for connection with a poppet actuator;a valve seat interface surface along an outside surface of the head that tapers upwardly moving radially outwardly from the head at an angle in the range of from 8 to 25 degrees;a flange extending radially around the poppet head and defining a terminal outside diameter edge of the poppet, the flange including a tongue that projects axially away from the flange; anda diaphragm extending radially around the poppet head and interposed betweenthe poppet head and the flange to enable poppet head movement relative to the flange,the head, flange and diaphragm being a one-piece construction;a circular poppet seat positioned adjacent the poppet, the seat having a poppet interface surface that tapers upwardly moving radially inwardly towards a radial axis of the seat in the range of from about 2 to 30 degrees;wherein actuation of the poppet causes the poppet to move towards the seat to form a leak-tight seal between the poppet seat interface surface and the valve poppet interface surface.