Precision Machined Bore: The 1 inch bore diameter ensures a tight tolerance fit to minimize shaft wobbling and dynamic imbalance

or contacts sticking in the closed position

verifying the capacitance and voltage rating is essential for motor longevity

though upright is recommended when using vent limiters

Sensus 143-IRV-1 Regulator 30067439-890 Precision Machined Bore: The 1The Sensus 143 IRV 1 Regulator is a job site standard for residential natural gas service and light commercial meter sets. Built on the rugged 143 80 chassis, this model features a 1 inch NPT inlet and a 3 8 inch orifice, delivering precise pressure reduction for HVAC burners, unit heaters, and boilers. The integrated internal relief valve (IRV) provides essential overpressure protection, while the green spring is factory calibrated for an outlet