Parker 4266-00 Valve 30067439-890 Direct Cross-Reference: Replaces Allanson 2721-668SF

Direct Cross-Reference: Replaces Allanson 2721-668SF without kit modifications

Thermal Protection: Engineered as a Class 2 transformer to limit power output in fault conditions

providing the durability needed for the heating season

this thermostatic expansion valve (TXV) maintains precise superheat throughout varying load conditions

the TS144E ensures the modulating gas valve receives accurate resistance signals to prevent hunting and short-cycling

Parker 4266-00 Valve 30067439-890 Direct Cross-Reference: Replaces Allanson 2721-668SFThe Parker 4266 00 Valve is a high performance normally closed solenoid valve engineered for precision refrigerant flow control in commercial HVACR systems. Specifically designated as the R26E63M model, this valve features 3 8" ODF solder connections, ensuring a leak proof integration into the liquid or suction line. It serves as the direct R20E83 replacement valve, though technicians must note that transitioning to this updated series requires a new