Check valve assembly for high-pressure applications

A check valve comprising:

• a valve housing having an outlet fluid passage and a housing valve cavity, said outlet fluid passage in communication with said housing valve cavity, a valve body having an inlet fluid passage and a body cavity, said inlet fluid passage in communication with said body cavity, said valve body sealably secured to said valve housing;
• a valve poppet, said valve poppet having a base portion, an extension portion, an da shoulder formed at a transition from said base portion to said extension portion, said base portion of said valve poppet slidably mounted within said body cavity with a close annular tolerance between said valve poppet and said valve body, in a closed position of the check valve a bottom surface of said base portion of said valve poppet abutting a supporting surface of said valve body which partially defines said body cavity, said valve poppet having means for forming communication between said inlet fluid passage and said housing valve cavity in an open position of the check valve;
• a seal disk having a seal disk through hole, said seal disk positioned within said housing valve cavity, said seal disk abutting said poppet shoulder portion, said extension portion positioned within said seal disk through hole;
• and
• bias means for normally urging said valve poppet into said closed position of the check valve.