Part Number: 16C112 (Flapper check valve)Part Number: 203500 (Flapper check valve)Part Number: 2483862 (Flapper check valve)Part Number: 2790545-101 (Flapper check valve)Part Number: 3179882-2 (Flapper check valve)Part Number: 68B552000-1003 (Flapper check valve)Part Number: 68B552000-2003 (Flapper check valve)Part Number: 68B552000-2005 (Flapper check valve)Part Number: 858720 (Flapper check valve)Part Number: 9914105-6 (Flapper check valve)