Most failures result from motor misalignment or prolonged exposure to high-torque starts

Compatible with a variety of Heil Quaker furnaces and PGAA

Can these be used for steam applications

Common Technician Questions Does this include the set screw for the motor shaft

High-Grade Construction: Corrosion-resistant stainless steel prevents scaling and degradation in high-moisture combustion environments

Resideo NK300S-100UP Boiler Feed R-407A Most failures result from motorThe Resideo NK300S 100UP Boiler Feed Combination Valve is a comprehensive solution for managing closed loop hydronic heating systems. This high performance assembly integrates a pressure reducing valve, a double check backflow preventer with an atmospheric vent, and a 200 micron stainless steel strainer into a single, compact brass body. Engineered for professional contractors, the NK300S 100UP features 1 2 inch union press fittings to accelerate