The valve features a nickel-plated forged brass body

For technicians servicing legacy units manufactured before August 2005

To maintain accuracy and prevent set point drift

Use the AH13 when you are dealing with higher pump heads to prevent valve leakage

While the DFS-448-153 is typically used for positive pressure rise

Trane BLD0637 Fan Blade 324846-701 The valve features a nickel-platedThe Trane BLD0637 Fan Blade is a heavy duty industrial component engineered for precision airflow in high static condenser and air handler applications. This 20 inch 4 blade assembly features a 26 degree pitch optimized for maximum CFM output while maintaining structural integrity under load. Designed for CCW (Counter Clockwise) rotation, it utilizes a 1 2" bore on discharge configuration, ensuring a secure fit on standard motor shafts. When replacing