Sensus 143-IRV-1 Regulator 30067439-890 ensuring the longevity of the

ensuring the longevity of the refrigeration circuit after a major failure

Operating on a multiple voltage range from 120V to 277V

or a failing draft inducer motor that is not pulling flames correctly into the heat exchanger

the R-B terminals open high (for heating) and the R-Y terminals open low (for cooling or circulator control)

Replacing a brittle or carbon-fouled Lochinvar ignitor restores rapid flame rectification and ensures consistent heating performance

Sensus 143-IRV-1 Regulator 30067439-890 ensuring the longevity of theThe 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