Armstrong Fluid Technology 426749-211 Adapter 321894-709 High-Temperature Durability: The probe is

High-Temperature Durability: The probe is constructed from robust alloys to resist oxidation and carbon buildup

it should not be undersized or oversized for the evaporator coil

Proper seating of this tray is essential for maintaining correct gas burner manifold pressure and preventing combustion issues such as sooting or delayed ignition

This unit features a 1/8 inch NPT male connection

Can I use this switch on a VFD output

Armstrong Fluid Technology 426749-211 Adapter 321894-709 High-Temperature Durability: The probe isThe Armstrong Fluid Technology 426749 211 Adapter is a critical precision engineered component designed for high performance HVAC pump systems. Constructed from high grade cast iron, this 8 inch pump adapter ensures the permanent alignment of internal rotating parts, specifically fitting 143 184JM motor frames. As the 426749 211 is the direct replacement for 426749 011, it provides a seamless upgrade path for maintaining Armstrong Series 4030 and 4380