Check valve assembly for high pressure pumps

A check valve assembly for providing fluid inlet and fluid outlet to a pressure chamber, said check valve assembly comprising:

• a valve body sealably secured in a wall of said pressure chamber, said valve body having at least one fluid inlet passage extending from an interior wall of said pressure chamber to an exterior wall of said pressure chamber and at least one fluid outlet passage extending from said interior wall of said pressure chamber to said exterior wall of said pressure chamber, each said fluid outlet passage having outlet one-way valve means, each said fluid inlet passage having inlet one-way valve means;
• said outlet one-way valve means comprising outlet valve closure means, an outlet valve fitting sealably secured within said valve body, said outlet valve fitting having an outlet valve fitting through hole extending axially through said outlet valve fitting, said outlet valve fitting through hole in communication with said fluid outlet passage, in a closed position of said outlet one-way valve means, said outlet valve closure means sealably seated against said outlet valve fitting, an outlet valve spring supported between said outlet valve closure means and said valve body;
• and
• said inlet one-way valve means comprising inlet valve closure means, an inlet valve seat having an inlet valve seat through hole in communication with said fluid inlet passage, said inlet valve seat having one face abutting said valve body and an opposite face sealably mateable with said inlet valve closure means, an inlet valve disk having an inlet valve disk through hole in communication with said fluid inlet passage, said inlet valve disk fixed in an abutted position against said valve body, and an inlet valve spring supported between said inlet valve disk and said valve body.