Common Questions Which actuators are compatible with the AV-821

or physical damage during descale procedures

Automatic Reset Functionality: Restores circuit continuity once temperatures return to safe operating parameters

Is this an OEM replacement part

Watts 0556031 Valve Common Questions Which actuators areThe Watts 0556031 (Model LFN36M1 3 4) is a heavy duty 3 4 inch lead free vacuum relief valve designed to protect water heaters and supply tanks from atmospheric pressure imbalances. Formerly cataloged under part number 0138458, this updated lead free version is vital for preventing vacuum conditions that siphon water away, which can lead to heater burnout or catastrophic tank collapse. This valve is engineered with a low profile design and a durable