This manual reset thermal switch acts as a flame rollout limit

Durable Construction: Built with stainless steel to resist corrosion in harsh steam and hot water environments

the chemical reaction for acid detection remains accurate

The Copeland Comfort Control (Alco) 038934 Repair Kit

McDonnell & Miller FS4-3J Flow Switch 30067439-890 This manual reset thermal switchThe McDonnell & Miller FS4 3J Flow Switch (Part Number 114610) is a heavy duty, general purpose liquid flow switch designed for HVAC and industrial hydronic systems. This model features a 1" BSPT connection, making it a critical component for international piping standards or specific domestic applications requiring British Standard Pipe Threads. Equipped with a Single Pole, Double Throw (SPDT) switch, the FS4 3J provides versatile signaling for