From the product description, test product web page for present description, worth and availability:
It is a new Cornelius keg lid with a brand new strain reduction valve and lid o-ring.
Good possibility so as to add a strain reduction valve to a Pin Lock keg, or to exchange an outdated lid.
C314-3048
Works with Each Ball & Pin Lock Kegs! Usually, Pin lock and ball lock cornelius fashion keg lids are interchangeable from a dimension perspective. Meaning you’ll be able to, typically talking, put a pepsi/ball lock fashion (guide prv) lid on a coke/pin lock fashion (no guide prv) keg. In my guide, that’s a strong improve. See: What’s the Distinction Between Ball Lock Kegs and Pin Lock Kegs?