The KUP-14A55-120 provides three sets of contacts (3PDT) instead of two

The Mueller Industries A17938 Check Valve is a veteran-grade 3/4 Magnetic Check Valve engineered for high-performance backflow prevention in commercial refrigeration and HVAC systems

it is designed to work in conjunction with existing gaskets or specific kit-bundled seals for a tight-fitting HVAC seal

Utilizing an OEM part for your evaporator coil drainage ensures that the pitch and drainage ports align perfectly with the unit's internal chassis

Key Benefits for HVAC Contractors: Precise Thermal Activation: Rated for a 160-170°F melt range to ensure timely pressure release before equipment failure

Resideo AT150B1252 Transformer 318973-401 The KUP-14A55-120 provides three setsThe Resideo AT150B1252 Transformer is a compact, foot mounted power solution engineered for rigorous light commercial and residential HVACR control systems. This heavy duty unit efficiently steps down 277V primary voltage to a stable 24VAC secondary (27. 5 V. O. C.), delivering a reliable 50VA rating for driving hydronic controls, magnetic switches, and Building Automation Systems (BAS). Designed with a focus on field durability, it features plastic