this normally closed unit ensures a fail-safe return to the home position upon loss of power

Using it on a lower voltage system will significantly reduce the wattage output (Ohm's Law)

you know that maintaining precise temperature control starts with reliable hardware

This black plastic switch (PN 205821) is the standard replacement for most modern units

Compatibility extends to the VR4200

Sensus 143-IRV-3/4 Regulator 30067439-890 this normally closed unit ensuresThe Sensus 143 IRV 3 4 Regulator is a job site standard for technicians requiring a mid capacity gas pressure regulator with internal relief valve. Engineered for residential service and light commercial applications, this 143 80 series model features a 3 4" NPT connection and a 3 8" precision machined orifice to provide stable delivery pressures. Configured with a green loading spring, it maintains a consistent outlet pressure range of 6 to 14 inches