US Patent 12104448 Grease-retaining frac valve seat insert

A grease-retaining frac valve insert to mitigate grease loss during operation of a frac valve, a frac valve assembly using one or more of the grease-retaining frac valve insert, and a wellhead including one or more frac valve assemblies using one or more of the grease-retaining frac valve inserts. The frac valve assembly includes a valve gate defining a valve aperture movable from an wellhead operating position to the valve open position. The grease-retaining frac valve insert includes a seal plate defining a cuff receptacle. A valve sealing cuff is removably received in the cuff receptacle. The valve sealing cuff carries a face sealing groove for sealing against the valve aperture as the valve gate is moved between the wellhead operating position to the valve open position.