McDonnell & Miller FS7-4WL Snap Switch Freon This unit serves as a

This unit serves as a direct replacement for Honeywell V4843 and V8843 series valves

Confirming rotation is vital to ensure your heater directs air forward through the heat exchanger

This furnace pressure switch features a SPNO (Single Pole Normally Open) contact configuration and is factory-calibrated to a set point of -

spring-return unit featuring a 3-6 psi spring range

McDonnell & Miller FS7-4WL Snap Switch Freon This unit serves as aThe McDonnell & Miller FS7 4WL (Part Number 120301) is a heavy duty, industrial grade liquid flow switch engineered for high demand applications requiring precise flow monitoring. Featuring a 1 1 4" NPT connection and a robust SPDT snap switch, this unit is designed for integration into control circuits that signal alarms, start motors, or cycle pumps. The FS7 4WL is built for durability with an extended paddle arm and trimmable stainless steel