Maxitrol M411B9 Plunger it simply provides more "headroom"

it simply provides more "headroom" for the control circuit

Common Technician Questions: Why does the L290F thermal switch keep tripping

Precise Signal Inversion: Factory-adjusted to decrease branch pressure in direct proportion to input increases for accurate sequencing

Noise usually indicates that the slinger has become loose

transparent nylon housing

Maxitrol M411B9 Plunger it simply provides more "headroom"The Maxitrol M411B9 is a high precision modulator head plunger engineered specifically for the MR212 series of gas pressure regulators and modulating valves. Within the Selectra electronic gas flame modulation system, this plunger acts as the critical mechanical interface between the electrical solenoid signal and the gas flow regulation. When the amplifier applies DC voltage (typically ranging from 10 to 13 Volts DC on MR212 models), the resulting