Erosion reducing valve plug and seat ring

A valve arrangement, comprising:

• a valve housing defining an interior chamber and a flow opening fluidly communicating with the interior chamber and allowing the fluid to escape the interior chamber;
• a seat ring engaged to the valve housing at the flow opening, the seat ring defining a seating surface and a spaced pair of channels positioned between the seating surface and the valve housing;
• and
• a valve plug axially slidable within the interior chamber and defining a valve plug seating surface and an outer surface, the valve plug seating surface being complementary to the seat ring seating surface such that direct engagement of the valve plug seating surface thereagainst creates a fluid-tight surface-to-surface seal, the valve plug further defining a spaced pair of projections positioned between the valve plug seating surface and the outer surface, the projections being sized and configured to cooperate with respective ones of the channels in a manner wherein the projections and the channels collectively define a tortuous fluid path for reducing the velocity of the fluid flowing toward the valve plug seating surface when disengaged from the seat ring seating surface.