Patent ID: 6155295
Filing Date: 2000-12-05
Classification: F16L,Y10T

Abstract:
A low emission disconnect for positioning along a fluid flow line, the disconnect comprising:a valve body having an external male thread portion;a ball mounted within the valve body and rotatable about a stem axis between an opened position and a closed position;a union housing for sealed engagement with the valve body;a female body having an internal female thread thereon for threaded engagement with the male thread on the valve body to bring the union housing into sealed engagement with the valve body;a poppet member linearly moveable within the union housing from an opened position to a closed position, the poppet member having an upstream end for positioning within the valve body and a linearly opposing downstream end, the upstream end having an end surface substantially conforming to an exterior surface of the ball when the ball is in the closed position;the upstream end of the poppet member having an exterior cylindrical surface for guided engagement with an interior cylindrical surface on the union housing when the poppet member moves to the closed position;one or more guide members each spaced linearly opposite the end surface with respect to the exterior cylindrical surface for guiding movement of the poppet member with respect to the union housing between the opened and the closed position; anda biasing member for biasing the poppet member to the closed position.