Watts 0555177 Valve 320720-756 shielding the air handler and

shielding the air handler and system coils from thermal stress and mechanical damage

even in extreme cold-weather cooling applications

eliminating the need for separate in-line check valves

Designed specifically for 3-ton air conditioning and heat pump units

Watts 0555177 Valve 320720-756 shielding the air handler andEnsure transient surge protection and mitigate hydraulic shock in your commercial or residential piping systems with the Watts 0555177 Valve. This 1" LF600 lead free silent check valve is engineered for high performance fluid control, featuring a Maxi Flo conical disc designed to provide full flow with minimal pressure drop, comparable to a standard swing check but with silent closure. Constructed from a durable lead free cast copper silicon alloy,