2.0 Check Valve Includes: (2) 2" Threaded Collar Set (48201) 2" Set of O-Rings (48022) (2) 2" MPT x 2" Slip (48023) 1.5" FPT x 2" Slip (48024)2.0 Check Valve Includes: (2) 2" Threaded Collar Set (48201) 2" Set of O-Rings (48022) (2) 2" MPT x 2" Slip (48023) 1.5" FPT x 2" Slip (48024)