Grundfos 00519850 Valve Set 319847-401 Dual Stage Control: Provides two-stage

Dual Stage Control: Provides two-stage gas furnace valve modulation for enhanced fuel efficiency and consistent heat output

Its 48Y frame and multi-horsepower design (1/3 - 1/6 HP) allow it to serve as a high-efficiency universal replacement HVAC motor

OEM Compatibility: Replaces older part numbers 626456 and 300609008 across Nordyne and Nortek brand families

Enhanced Wiring: Factory-installed 96 inch wire leads eliminate the need for additional splicing in large air handlers or fan coils

Grundfos 00519850 Valve Set 319847-401 Dual Stage Control: Provides two-stageThe Grundfos 00519850 Valve Set is a professional grade 1 2 inch bronze isolation valve kit designed for seamless integration with Grundfos UP and UPS series circulator pumps. Engineered for high temperature hydronic heating and potable water systems, these union isolation valves allow for rapid pump servicing or replacement without the need to drain the entire loop. The sweat connection design provides a secure, leak free interface, while the heavy