Patent ID: 7033134
Filing Date: 2006-04-25
Classification: F02C,F05D,Y10T

Abstract:
1. A check valve assembly for placement between and for selectively providing fluid communication between a first environment, at least a portion of which is at a first pressure (P 1 ), and a second environment, at least a portion of which is at a second pressure (P 2 ), wherein the difference between the first and second pressures generate a pressure force (F p ), the check valve assembly comprising: a valve body having an inlet port, an outlet port, and a flow passage therebetween; a valve seat adjacent to the valve body and having an opening therethrough, the valve seat opening in fluid communication with the valve body flow passage; and a valve element disposed between the valve seat and the valve body and having a density that is greater than the density of the fluid to be communicated between the fist environment and the second environment, the valve element capable, of being acted upon by a gravitational force (F