Nordyne 667290 Motor Pulley 340155-7024 and the critical relief valve

and the critical relief valve seat O-ring

The control is supplied with a "break-off" shaft featuring notches at various lengths

secured by the included locknut

Built with a cast bronze globe pattern body

while its robust motor protection ensures reliability under demanding duty cycles

Nordyne 667290 Motor Pulley 340155-7024 and the critical relief valveThe 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