I have a 3/4" Watts LFU5B PRV valve that has a strainer that is removed after the plug is removed. The strainer plug is 12 sided and measures 1.24" flat to flat but a 12 point 1 - 1/4" socket is not correct. Is there a specialized tool or anyone know off the top of their head (I don't own every socket in a range over 1") what size socket is used? I want to use a socket and not try to turn on it with channel locks, etc? I also don't see a nominal dimension listed in any specs I can find.