Backflow Prevention：
Effectively restores the performance of the PVB4A and PVBLF4A Pressure Vacuum Breaker (PVB) 4A Series, ensuring that water flows in the correct direction. It prevents back-siphonage, safeguarding the potable water supply from contamination and ensuring water safety.
Freeze Protection：
Equipped with a standard integral freeze protection relief valve, it reduces the risk of damage from intermittent freezing conditions, ensuring reliable operation not only in summer but also in colder winter environments.
Modular Check Valve Cartridge：
Featuring a captured spring, replaceable seat, and a reversible silicone seat disc, the float and bonnet repair assembly provides easy replaceability and efficient operation.
Ball Valve Shutoffs：
The assembly includes ball valve shutoffs with stainless steel handles and nuts as standard, providing smooth operation and enhanced corrosion resistance.
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