McDonnell & Miller 51-S-2 Switch R-410A 4A for consistent startup even

4A for consistent startup even under high load

the V-9502-15 positioner overcomes high-pressure drops and fluid velocity forces that typically compromise standard actuator accuracy

commercial freezing

Robust Environmental Rating: Designed to operate in high-humidity environments with a high-temperature bellows seal

By replacing both the furnace ignitor and the flame sensor simultaneously

McDonnell & Miller 51-S-2 Switch R-410A 4A for consistent startup evenThe McDonnell & Miller 51 S 2 is a heavy duty mechanical water feeder and low water cut off (LWCO) designed for low pressure steam and hot water boilers. Engineered for systems with a maximum vessel pressure of 35 psi, this unit features a snap acting SPDT switch that ensures positive electrical contact for burner control or alarm signaling. The 1" NPT connections allow for straightforward integration into existing boiler piping, providing a reliable