As a veteran-grade Raypak replacement part

Common Questions: When should the SFD13S6VV be installed

this 3-ton thermostatic expansion valve is engineered for compatibility with high-pressure R-410A systems commonly found in modern residential units

Balanced Port Construction: Minimizes the impact of varying head pressures on superheat

Burnham Boiler 8010801 Aquastat 30067439-890 As a veteran-grade Raypak replacementThe Burnham Boiler 8010801 Aquastat is a high limit immersion controller engineered for precision temperature regulation in hydronic heating systems. Calibrated specifically for a 150F temperature setpoint, this OEM component is a critical safety and efficiency device for Burnham Alliance water heaters and compatible boiler configurations. It functions as a single pole, single throw (SPST) switch that breaks the circuit on temperature rise, preventing