Armstrong International B4028-1 Float Mechanism R-410A this 4-way reversing valve is

this 4-way reversing valve is designed to handle the high operating pressures associated with modern R-410A refrigerants as well as older R-22 legacy systems

Engineered with a proportional thermostatic element

this kit provides the precise 3/4 inch sweat connection required to maintain system efficiency and refrigerant containment

critical for maintaining the millivolt signal integrity required by sensitive gas controls found in gas furnaces

Armstrong International B4028-1 Float Mechanism R-410A this 4-way reversing valve isThe Armstrong International B4028 1 Float Mechanism is a critical precision engineered component designed specifically for B8 Series Float & Thermostatic Steam Traps. This heavy duty steam trap repair kit serves as the direct internal replacement for the legacy 15B8 MECH assembly, ensuring seamless system restoration without the need for full trap replacement. Optimized for low pressure applications, this F&T steam trap mechanism features a large 7 8"