The Allanson 421-BT290 is a heavy-duty universal ignition transformer engineered for high-performance oil burner service and replacement applications

Technicians often specify this model for cooling tower water level control and large-scale reservoir float valve systems due to its mechanical simplicity and durable pivot mechanism

utilizing the Trane CNT7650 control board ensures seamless compatibility with existing DynaView and TechView diagnostic interfaces

This 1-1/4" brass glass nut is precision-machined from high-grade brass to ensure a reliable

it ensures high visibility and simplified field programming

Browning 1VP62X 1 1/8 Sheave Refrigerant The Allanson 421-BT290 is aFor HVACR contractors managing airflow and system static pressure, the Browning 1VP62X 1 1 8 Sheave is a high performance variable pitch pulley engineered for precision speed adjustment. This single groove variable pitch sheave features a 5. 95" outside diameter and is manufactured from high grade cast iron, providing superior vibration dampening and heat dissipation compared to lighter aluminum alternatives. The 1 1 8 inch fixed bore comes finished