I need to replace this anti-siphon valve on my pool fill line. This valve leaks out of every possible location when turned on:
It looks like a manual sprinkler valve with the handle replaced for easier turning. Is this what I should do - buy a new sprinkler valve and replace the handle? Are there more suitable devices out there for this purpose? The main reason I'm asking is because when I search for a pool fill anti-siphon or backflow devices, I get few good results and it's difficult to tell what is the standard device to use.