[beachbum0]

Can anyone tell me if I am missing a part from this picture, this is how it was taken apart

 

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Yes you are missing a phenolic disc check valve, Looks like a brown dime. It goes on the end of the spring opposite to the washer/retainer. Closes off the hole/seat in the bypass.

By the way, these are not meant to be disassembled and re-used. Get a new one!!