Pressure regulator having an integrated check valve

摘要

A pressure regulator for use in an engine is disclosed. The pressure regulator may include first and second flow paths formed in a body, wherein the first flow path is configured to pass a first fluid and the second flow path is configured to receive a second fluid. A diaphragm may be disposed within the first flow path and the diaphragm may be configured to move based on a pressure differential between the first and second fluids. The pressure regulator may further include a seat associated with the first flow path. A primary valve element may be connected to the diaphragm and configured to selectively engage the seat when a pressure of the fluid in the first flow path exceeds a pressure of the fluid in the second flow path by a first threshold amount. Additionally, a secondary valve element may be connected to the diaphragm and configured to selectively engage the seat when the pressure of the fluid in the second flow path exceeds the pressure of the fluid in the first flow path by a second threshold amount.

主权项

1. A pressure regulator, comprising:
a body; a first flow path formed in the body and configured to pass a first fluid; a second flow path formed in the body and configured to receive a second fluid; a diaphragm disposed within the first flow path and configured to move based on a pressure differential between the first and second fluids; a seat associated with the first flow path; a primary valve element connected to the diaphragm and configured to selectively engage the seat when a pressure of the first fluid exceeds a pressure of the second fluid by a first threshold amount; and a secondary valve element connected to the diaphragm and configured to selectively engage the seat when the pressure of the second fluid exceeds the pressure of the first fluid by a second threshold amount.