SUNGATOR 2-Pack Vacuum Breaker Set, 3/4 Inch Anti-Siphon Hose Bib Valve for Garden Spigot, RV, Solid Brass Anti-Backflow Valve with Tape vs Legend Valve 108-903 T-550 VACUUM BREAKER REPAIR KIT by Legend Valve

We couldn't find enough data on either option to be able to come to any reliable conclusions. We strongly suggest that you look at some alternatives that also cost around $12.

No sources that do their own in-depth testing have considered the SUNGATOR 2-Pack Vacuum Breaker Set, 3/4 Inch Anti-Siphon Hose Bib Valve for Garden Spigot, RV, Solid Brass Anti-Backflow Valve with Tape to be a good enough purchase for it to earn a sport in their Outdoor Faucet roundups, which is typically a bad sign.

Taking a look at the Legend Valve 108-903 T-550 VACUUM BREAKER REPAIR KIT by Legend Valve, we found that it hasn't managed to perform well enough to earn a spot in any Outdoor Faucet roundups done by sources that conduct their own, high-quality, hands-on testing. That alone makes it difficult to recommend.

As a last step, we wanted to do a head-to-head SUNGATOR 2-Pack Vacuum Breaker Set, 3/4 Inch Anti-Siphon Hose Bib Valve for Garden Spigot, RV, Solid Brass Anti-Backflow Valve with Tape vs. Legend Valve 108-903 T-550 VACUUM BREAKER REPAIR KIT by Legend Valve comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.