Patent ID: 6089528
Filing Date: 2000-07-18
Classification: F15B

Abstract:
A control for a poppet valve, comprising:a housing defining a first cavity portion and a second cavity portion connected in communication with the first cavity portion, the housing including a first port adapted for selectively communicating the first cavity portion with a control chamber of the poppet valve for receiving fluid therefrom, a second port adapted for communicating the first cavity portion with another location for receiving the fluid, and a valve seat disposed within the first cavity portion between the first port and the second port;a valve member having a first end portion, an opposite second end portion, and an axis extending therebetween, the first end portion being located in a bore in the housing in communication with the first cavity portion for supporting the valve member for axial movement between a closed position in sealed relation to the valve seat and a range of open positions displaced from the valve seat wherein flow of the fluid past the valve seat between the first port and the second port is allowed for controllably opening the poppet valve responsive to an opening force applied against the valve member, the second end portion extending between the first cavity portion and the second cavity portion;at least one biasing member disposed for resiliently opposing the movement of the valve member toward the open positions; anda sealing element disposed between the first cavity portion and the second cavity portion around at least a portion of the second end portion of the valve member, the sealing element forming a substantially sealed condition around at least a portion of the second end portion of the valve member for limiting fluid leakage between the first cavity portion and the second cavity portion, and structure supporting the sealing element in alignment with at least a portion of the valve member.