Patent ID: 7398955

Claim:
A valve seat configuration comprising: (a) a valve housing having an interface area configured with at least one valve housing locking groove, said valve housing locking groove including at least one sloping wall; (b) a valve seat body having a flow channel, an inner surface and an outer surface, said outer surface configured to contact said interface area, said outer surface configured with at least one valve seat locking groove circumscribing said valve seat body, said valve seat body including a plurality of spaced apart through bores passing radially through said valve seat body from said valve seat locking groove to said inner surface of said valve seat body, and a plurality of displacement elements inserted into said through bores through openings in said inner surface; and (c) at least one locking element configured for initial deployment in one of said valve seat locking groove and said valve housing locking groove; wherein outward radial displacement of said displacement elements from said inner surface toward said outer surface causes outward radial displacement of said locking element so as to be at least partially deployed in both said valve seat locking element groove and said valve housing locking element groove so as to contact said sloping wall so as to draw said valve seat body toward said valve housing, thereby attaching said valve seat to said valve housing.