INTERNAL ELEMENT FOR FLOW REGULATOR

摘要

A valve for a flow regulator employed in a fluid system is disclosed. The flow regulator includes a housing defining an internal chamber and a fluid inlet and outlet communicating with the chamber each adapted to be connected to the fluid system. Mounted within the chamber is a reciprocating piston that is actuated by an external master piston. A backing element is also mounted within the housing. The valve includes an elastomeric inner member including a body with a circumferential layer of elastomeric material bonded to the body. The inner member is mounted between the piston and stationary backing member and upon being compressed by the piston, varies the flow area through the inner chamber. To protect the interface of the outer layer and the body from fluid flow, a shield may be placed along the backing member and the upstream end of the inner member.