this valve is rated for low-pressure applications only

it typically includes the valve assembly and required components for a standard field installation into compatible Carrier/ICP evaporator coils

Key Benefits Protects mechanical integrity by preventing unwanted vacuum conditions in heat exchangers and storage tanks

and debris within the liquid line

also recognized in the field as the QC-6

Tecumseh K90-21 Overload Protector 320788-704 this valve is rated forThe Tecumseh K90 21 Overload Protector is a critical safety component designed for hermetic compressor motor protection. Engineered for precise thermal and current sensing, this external overload interrupts power to the compressor windings when internal temperatures or amperage draw exceed safe operating parameters. Utilizing a bimetallic disc mechanism, the K90 21 provides reliable protection against locked rotor conditions and continuous running