Erosion resistant choke valve

A valve apparatus for controlling the flow of fluids from a source of pressurized fluid, the apparatus comprising:

• a. a valve body having a valve chamber with an inlet port and an outlet port;
• b. a seat assembly mounted in the valve chamber;
• c. a control member mounted in the valve chamber and axially movable with respect to the seat assembly from a closed position preventing flow of fluids between the inlet port and the outlet port and selected open positions which provide predetermined flow areas through which flow and pressure throttling of fluids from the inlet port to the outlet port occurs;
• d. a lower stem connected to the control member;
• e. a valve bonnet attached to the valve body, the valve bonnet having a valve bonnet through bore through which the lower stem slidingly reciprocates while moving the control member between the closed position and a selected open position;
• f. an annular sealing assembly secured to the valve bonnet, the annular sealing assembly surrounds the lower stem in a sliding and sealing engagement therewith, the lower stem having a lower large diameter portion and an upper smaller diameter portion, the annular sealing assembly having an upper seal assembly, a lower seal assembly and a spacer there between;
• and
• g. an outer seat carrier engaged within the valve body, the outer seat carrier comprising two elongated longitudinally disposed radial slots, each radial slot oriented at a 90 degree angle respectively to the inlet port, the outer seat carrier having an inner seat insert, the inner seat insert comprising two inner seat slots, wherein the inner seat insert is coaxially assembled into the outer seat carrier enabling inlet fluid to impact a diversion wall of the outer seat carrier splitting the inlet fluid into two flows and through the mated slots simultaneously, reducing erosion on the mated slots.