Autofill float valve question

moore887

Gold Supporter
Silver Supporter
In The Industry
Aug 14, 2018
261
CAPE CORAL
I broke my autofill float valve and threw it away. I ordered this one on Amazon. It is too big to screw into the hole. Nobody told me there were different size threads in plumbing. Would anyone care to stab a guess as to what the correct float valve could be?
 

KDpoolguy

Bronze Supporter
Mar 5, 2017
593
Palm Desert, CA
I did the exact same thing. I’ve had 3 pools with Autofills and they’re all 3/8”. Like this one. I don’t recommend the ones with plastic threads as there’s no locking nut.