Patent ID: 9581258
Date: 2017-02-28
CPC Classifications: F04F,F16K,Y10T

Claim:
1. A check valve comprising: a housing defining an internal cavity having a first port and a second port both in fluid communication therewith; and a sealing member within the cavity, wherein the sealing member is a generally flat disc translatable between a closed position against a first seat within the internal cavity of the housing and an open position against a second seat within the internal cavity of the housing; wherein the sealing member comprises a sealing material positioned for sealing engagement with the first seat when the sealing member is in the closed position and a reinforcing member positioned for engagement with the second seat when the sealing member is in the open position; wherein, in the open position, fluid communication with the second port is through the second seat; wherein the first seat includes a first annular seal bead surrounding an opening defined by the housing for fluid communication between the internal cavity and the first port, and a second seal bead disposed radially inward of the first annular seal bead and separated therefrom by the opening defined by the housing for fluid communication between the internal cavity and the first port; and wherein the reinforcing member comprises a material different than the sealing material of the sealing member.