The Danfoss 017-521566 RT121 Pressure Switch is a heavy-duty single pressure control designed for industrial refrigeration and general process monitoring

Circuit Protection: Helps prevent further damage to the HVAC control board by providing clean switching for high-voltage load circuits

Key Benefits NSF Certified construction ensures compliance with health department standards for commercial food service

5 370V capacitor

Nordyne 667290 Motor Pulley 321142-301 The Danfoss 017-521566 RT121 PressureThe Nordyne 667290 Motor Pulley is a critical component for fine tuning the blower speed and airflow across various Nordyne and Nortek air handlers and furnace systems. As a genuine OEM adjustable motor pulley (also referred to as an adjustable sheave), this part allows contractors to balance the system's static pressure by precisely modifying the pitch diameter. Designed for heavy duty HVACR applications, the 667290 features a durable construction