Patent ID: 8353310
Filing Date: 2013-01-15
Classification: F16K,Y10T

Abstract:
1. An internal valve comprising: a body having a valve seat disposed in a fluid flow passageway between an inlet and an outlet, the fluid flow passageway to receive a process fluid; a flow control member operatively coupled to the body, the flow control member to move between a first position to engage the valve seat to restrict fluid flow through the valve and a second position to move away from the valve seat to allow fluid flow through the valve; a removable actuator disposed inside the fluid flow passageway of the body between the inlet and the outlet and operatively coupled to the flow control member, the removable actuator being responsive to a fluid pressure independent of a pressure of the process fluid, the removable actuator to cause the flow control member to move between the first and second positions; an equalization member to engage a bleed port integrally formed with the flow control member, the equalization member to move between at least a first operating position to engage the bleed port to restrict fluid flow through the bleed port and a second operating position to move away from the bleed port to allow fluid flow through the bleed port; and a valve stem operatively coupled to the equalization member, the actuator to engage the valve stem to position the equalization member to the at least second operating position.