Check Valve Removal Tool, Universal - R701
This tool has both a wide and slim slot for almost all check valves and makes changing check valves very easy - will only take a few minutes if used properly.
C001 Check Valve: This is the common Coleman check valve and air stem that fits most styles of lanterns and stoves made after 1946 and some before that date.
R425 Check Valve: This is the earlier larger style check valve as used on the L227, L427, 220B, 228B, 220C, 228C, 235 lanterns, some lamps, and some early stoves.