Watts 590715 0590715 1/8″ FV-4M1 Automatic Float Vent for Hot Water Heater

Watts 0590715 1/8″ FV-4M1 Automatic Float Vent. This valve is crucial for maintaining system performance by automatically venting air that can cause issues such as noise and reduced efficiency. Key features include a 1/8″ bottom tap and a 1/8″ NPT male threaded inlet, allowing for easy installation and integration into existing systems.