HIGH PRESSURE VALVE

摘要

A high pressure valve in which the valve needle is guided in a well formed in the valve body so that it can be moved to seat one end in a valve seat formed at the bottom of said well. Outlet and inlet passages communicate with the opposite sides of the seat whereby the flow of fluid between said passages can be controlled by axial movement of the valve needle. The valve needle is arranged and formed whereby the pressure of the fluid being controlled applies a retracting force to retract the valve needle. The valve needle drive means cooperates with said valve needle to overcome the retracting force and advance the needle into seating engagement in the valve seat.